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FS9903-SY 990429 Flood Study In Support 01 a Conditional Letler of Map Revision For The Elm Fork of the Trinity River for a 1 0 Acre and 48 Acre Tract South of Sandy Lake Road and S"ast at MCArthur Blvd City oj Coppell, Texas · . \N \'V~\'\~ "",1 ~ 1 .!:.~f.'~"'" ..' * "~ft ~ .' ,,\V' l ".* : ,* .. 'R~'w"~6RRISON L. ..r.....................r "b.\ ~ 36651 ~ .,~s ". ~'."f:t;,STf."~"'~" ....ors i'.........;;.~~ '" DNA\. ~ \\, MORRISON HYDROLOGY ENGINEERING, INC. 210 ARNOLD ARLINGTON. TEXAS 76010 METRO FAX (817) 461-0321 (617) 274-1336 Ova. c.o \A~ Morrison Hydrology Engineering, Inc. Page -l- Table of Contents Introduction City of Coppell Requirements General Hydrologic and Hydraulic Information Results FEMA Effective Information FEMA Existing Condition FEMA Proposed Condition Results CDC Information General Hydrulogic and Hydraulic Information Storage Determinations Results CDC Forms Summary Morrison Hydrology Engineering, Inc. Page -2~ Tables Comparison between flood elevations for the sources investigated. Comparison between storage values for the existing and proposed conditions Exhibits, Plates and Maps Appendix I: Appendix 2: Plate 4-1 City-Wide Storm Water Managemant Plan Figure 1 Halff CLOMR Location Map Figure 6 Halff CLOMR Water Surface Profiles Figure 7A Halff CLOMR Revised Floodplain and Hoodway Figure 7B Halff CLOMR Revised Floodplain and Floodway Figure 7C Halff CLOMR Revised Floodplain and Floodway Figure 8 Halff CLOMP, Proposal Sandy Lake Road Bridge Section Appendix 3: Appendix 4: Appandix 6: Site Location Map Upper Trinity River Corps Model Delineations Floodplain Fill Project Storage Compensation Location Floodplain Fill Project Existing Topography with Ultimate Discharge Floodplain Fill Project Existing Topography with FEMA Discharge Floodplain Fill Project Proposed Condi~al with FEMA Discharge (1 .'=600') Floodplain Fill Project Proposed Condition with FEMA Discharge (1 :=300') Floodplain Fill Project Proposed Condition with FEMA Discherge (1"=300') Appendices Information froin City-Wide Storm Water Management Study Information from Request for Conditional Letter of Map Revision on the Elm Fork of the Trinity River Sandy Lake Road Bridge Hydraulic Study, Halff Associates Inc. Dallas, Texas June 1994. Information froan Floodplain Hydraulics Study Elm Fork Trinity River for Conditional Letter of Map Revision Request 18.9 Acre Sandy Lake Road Property, Nathan D. Maier Inc. Dallas, Texas A. Duplication floodway model B. Duplication floodplain model Information from the Corps of Engineers HEC-RAS model currently under review by FEMA. Existing Conditions A. Existing Condition Floodway B. Existing Condition Multiple Profile Model C. Existing Cross Sections D. Existing Condition Water Surface Profiles E. Existing Condition Delineation Proposed Conditions A. Proposed Condition Floodway B. Proposed Condition Multiple Profile Model C. Proposed Cross Sections D. Proposed Water Surface Delineations E. Proposed Condition Delineations FEMA Forms CDC Information and Forms Morrison Hydrology Engineering, Inc. Page -3 Introduction The purpose of this report is to submit information in support of approvals relating to the City of Coppell Floodplain Management Ordinance, The Federal Emergency Management Agency (FEMA), the Corridor Development Certificate (CDC) process, and the Corps of Engineers Clean Water Act Section 404 (Wetlands). The project area is south of Sandy Lake Road, and east of McArthur Blvd. and consists of fill in the floodplain with compensating excavation that results in no increase in flood levels and no decrease in flood storage. The project area consists of two general tracts, a 10-aere and 48 acre tract. Both l~aets contain some floodplain from the Ell Fork of the Trinity River. City of Coppell Requirements General The City of Coppell through a Floodplain Management Ordinance has specific requirements relating to this project. The lowest floor of all residential construction must be elevated a minimum of two feet above the Flood Insurance Study (FIS) base flood elevation or one foot above the design base flood elevation, whichever is higher. This report has shown fill one foot above the FIS base flood; assuming that residantiai structures finished floors will be elevated one foot above grade. A check was made to ensure that this elevation is higher than the design flood plus one foot and higher than the current Corps of Engineers study in the area. Hydrologic and Hydraulic Information A copy of the City Wide Storm Water Management Study for the City of Copp~ll dated January 1991 was obtained (appendix 1). This documant provided the design flood elevations used in this study. Table 1 is a comparison between all the flood elevations from sources investigated in this study. Results The proposed project meets or exceeds all the Floodplain Management Ordinance requirements. FEMA Information General There are severai sources available to determine the FEMA flood elevations for the site. They are as follows: 1. Request for Conditional Letter of Map Revision on the Elm Fork of the Trinity River Sandy Lake Road Bridge Hydraulic Study, Halff Associates Inc., Dallas, Texas June 1994. 2. Floodplain Hydraulics Study Elm Fork Trinity River for Conditional Letter of Map Revision Request 18.9 Acre Sandy Lake Rood Property, Nathan D. Maicr Inc., Dallas, Texas July 1996. 3. Corps of Engineers HEC-RAS model currently under review by FEMA. Morrison Hydrology Engineering, Inc. Page -4 FEMA Effective Information In order to decide which model to use as the effective condition contact was made with FEMA's technical consultant Michael Baker Jr. Engineers. They agree that the most accurate model would be the Corps HEC-RAS model currently under review. However, this model has not been officially approved and can not be considered the effective model at this time. The next most current model available is the Floodplain Hydraulics Study Elm Fork Trinity River for Conditional Letter of Map Revision Request 18.9 Acre Sandy Lake Road Property, Nathan D. Maier inc., Dallas, Texas July 1996. This model was provided from the City of Coppell. This report used the existing condition from this model as the effective FIS model. Hydraulic Information The project area is modeled by all the studies investigated in the same way. It is blocked from flow from the Elm Fork of the Trinity by high ground. This means that it is in an ineffective flow area, and filling of the site has no impact on the floodplain elevations. Results The site can be filled without alteration of the flood elevations or any other impact except flood storage, and this has been addressed by offsetting storage compensation. All requ'wod FEMA forms to support a Conditional Letter of Map Revision are included in appendix 7. CDC Information General The project area consisting of two Wacts, one 10-aere tract adjacent to McArthur Road and south of Sandy Lake Road, the other tract is a 48-acre triangular site. Both of these tracts are shown on the drawing in appendix 7. The project consists of fill in the floodplain with compensating exeavatien that results in no increase in flood levels and no decrease in flood storage. Hydrologic and Hydraulic Information The two tracts are affected by the flood elevations fi'om the Elm Fork of the Trinity River. However, the~e elevations are blocked from the actual flow of the river. The area is in an ineffective flow regime and thus has no impact on flood elevations as long as storage levels are not reduced. This means that filling the tracts has no impact on the flood elevations. Storage Determinations It is important to offset any lost storage created by filling the tract. This is accomplished by excavating a portion of the TP&L easement on the 48-acre tract. This area is shown on the drawing in appendix 7. In order to determine the storage on the property before and after the proposed project a computer model was created by describ'mg cross sections through the area. The results of this analysis are included in appendix 8. Morrison Hydrology Engineering, Inc. Page -5 Results The project site is in an area that receives floodwaters from the Ell Fork of the Trinity River, but is isolated from the actual flow of the river. Becaus~ of this the area can be filled without impact to the flood elevations of the river. This report has identified storage mitigation so that there is no net decrease in flood storage. CDC Forms All required forms in support ofa CDC approval are included in appendix 8. Summary This report provides information in support of the following approvals: Federal Emergency Management Agency Conditional Letter of Map Revision Corridor Development Certificate approvals City Floodplain Management Ordinance approvals Coordination is centinuing with the Corps of Engineers in order to obtain 404 permit approvals. TABLE 2 Storage Table 48 Acre Tract Existing Proposed Section100 yr Vol, AF Vol, AF SPF 1 445.6 0 0 1 450.49 0 0 2 445.45 4.52 5.54 2 450.4 32.6 34.69 3 445.4 7.96 11.89 3 450.35 58.02 69.03 4 445.25 12.44 18.44 4 450.3 83.73 102.21 5 445.21 16.7 23.77 5 450.25 104.26 127.44 6 445.1 20.34 28.22 6 450.2 120.77 147.16 7 444.9 27.19 36.86 7 450.1 151.41 182.74 8 dd'!.,82 34.42 46.55 8 450.09 181.89 216.71 10 Acre Tract Existing Proposed Section100 yr Vol, AF Vol, AF SPF 1 445.25 0 0 1 450.3 0 0 2 445.21 0.92 0 2 450.25 6.76 5.08 3 445.1 2.52 0 3 450.2 25.22 19.78 4 445 4.25 0 4 450.1 39.32 30.28 Total Storage 48 Acre Tract Storage 100 yr SPF 10 Acre Tract 1 O0 yr SPF 100 yr SPF 12.13 AF 34.82 AF -4.25 AF -9.04 AF 7.88 AF 25.78 AF FLOOD PLAIN 100-YEAR FLOOD PLAIN LIMITS 445 DENOTES 100-YEAR DESIGN FLOOD INUNDATION LINE WITH FULLY DEVELOPED WATERSHED AND EXISTING CHANNEL, FLOOD PLAJN AND BRIDGE CONDITIONS. _/, /i SOURCE: ~ U,S. ARMY CORP OF ENGINEERS BASE MAp I:I~OM FORT WORTH DISTRICT ELM FORK USGS QUADRANGLE LEWISVILLE EAST, TEXAS, UPPER TRINITY PREL]M, RECON. STUDY J PLATE 4-1 ELM FORK OF THE TRINITY RIVER CITY-WIDE STORM WATER MANAGEMENT STUDY for the City of COPPELL, TEXAS Albert H. Halff Associates, Inc. January 1991 m A TABLE E-10 ELM FORK OF THE TRINITY RIVER SUMMARY OF HYDRAULIC DATA Cumulative Q CWSEL Velocity Storage Section · fcfs~ ~ ffps} fAcre-Ft) 77490.000 14200.00 432.99 1.36 .00 77490.000 49800.00 438.77 1.97 .00 77490.000 93100.00 444.49 1.97 .00 Approx. Cumulative fAeres) 84750.000 11900.00 433.73 , .87 1132.72 136.99 84750.000 49500.00 439.77 1.52 3461.51 47131 84750.000 91500.00 445.18 1.62 6082.88 475.41 85000.000 11900.00 433.73 1.44 1178.39 142.77 85000.000 49500.00 439.81 2.21 3603.83 495.83 85000.000 91500.00 445.22 2.04 6358.32 500.07 86560.000 11900.00 433.89 1.00 1426.88 176.70 86560.000 49500.00 440.03 1.67 4252.10 588.89 86560.000 91500.00 445.36 1.89 7507.87 593.53 87530.000 12600.00 433.87 4.25 1599.07 201.81 87530.000 55000.00 440.09 5,87 4707.17 648.19 87530.000 100000.00 445.43 5.03 8295.97 666.19 87800.000 12600.00 434.08 3.65 1622.07 205.00 87800.000 55000.00 440.18 7.39 4776.69 658.41 87800.000 100000.00 445.42 7.03 8423.26 679.08 87869.000 12600.00 434.13 3.74 1628.08 205.76 87869.000 55000.00 440,28 8.37 4792.15 660.41 87869.000 100000.00 445.44 9.17 8450.61 681.79 87870.000 12600.00 434.13 3.82 1628.17 205.77 87870.000 55000.00 440.28 8.37 4792.35 660.43 87870.000 lO00OO.O0 445.38 10.57 8450.92 681.83 87960.000 12600.00 434.26 3.77 1635.79 206.82 87960.000 55000.00 440.87 7.88 4810.18 662.23 87960.000 10O000.00 446.74 10.37 8476.70 685.44 E-24 83400.000 11900.00 433.64 .92 859.22 105.98 83400.000 49500.00 439.59 1.52 2624.81 346.00 83400.000 91500.00 445.05 1.56 4562.15 349.21 80970.000 14200.00 433.34 1.71 443.64 6Z34 80970.000 49800.00 439.20 2.30 1222.84 149.94 80970.000 93100.00 444.78 2.17 2073.59 151.35 B TABLE E-10 ELM FORK OF TIIE TRINITY RIVER SUMMARY OF HYDRAULIC DATA (continued) Cumulative Q CWSEL Velocity Storage Section fcfs} (fO (fps) fAcre-Ft} Appro~ Cumulative Flooded (Acres) 87961.000 12600.00 434.27 3.69 1635.87 206.84 87961.000 55000.00 440.88 7.88 4810.38 662.25 87961.000 I00000.00 447.80 7.16 8477.07 685.48 88000.000 12600.00 434.28 4. 15 1639. 15 207.33 88000.000 55000.00 441.130 8.16 4818.53 663.35 88000.000 100000.00 447.96 6.98 8494.59 687.01 88030.000 12600.00 434.36 3.91 1641.66 207.70 88030.000 55000.00 441.13 8.14 4824.97 664.44 88030.000 100000.00 448.00 7.77 8508.06 688.14 88050.000 12600.00 434.38 3.90 1643.41 207.93 88050.000 55000.00 441.21 8.07 4829,42 665.16 88050.000 100000.00 448.11 7.77 8516.73 688.91 88150.000 12600.00 434.49 3.65 1652.41 209.08 88150.000 55000.00 441.80 6.77 4857.65 669.99 88150.000 100000.00 448.71 5.98 8576.31 693.87 89050.000 12600.00 435.38 3.04 1751.75 227.74 89050.000 55000.00 443.07 2.64 5371.39 748.15 89050.000 100000.00 449.34 2.05 9595.72 772.42 90000.1100 12600.00 436.46 4.03 1839.72 242.35 90000.000 55000.00 443.49 5.20 5864.53 827.86 90000.000 I00000.00 449.50 3.72 10623.72 862.91 90880.000 12600.00 437.57 2.52 1920.96 256.87 90880.000 55000.00 444.28 2.77 6218.53 882.26 90880.000 100000.00 449.81 2.43 11322.50 925.93 92090.000 12600.00 438.30 2.21 2084.57 297.25 92090.000 55000.00 ~. ~. ~..74 2.32 7059.39 1013.23 92090.000 100000.00 450.05 1.98 12893.84 1062.94 92300.000 12600.00 438.40 2.39 2115.70 311.10 92300.000 55000.00 ~.~.82 2.13 7254.74 1043.79 92300.000 100000.00 450.09 1.92 13255.35 1094.67 93620.000 12600.00 439.34 4.37 2286.94 438.34 93620.000 55000.00 445.60 4.71 9087.16 1397.46 93620.000 100000.00 450.49 3.23 16942.45 1468.77 TABLE E-10 ELM FORK OF THE TRINITY RIVER SUMMARY OF HYDRAULIC DATA (continued) Approx. Cumulative Cumulative Hooded Q CWSEL Velocity Storage Area Section fcfs'} (~} ffps) fAcre-Ft) (Acres} 93670.000 12600.00 439.60 8.69 2289.79 439.35 93670.000 550430.00 445.70 3.59 911196 1405.65 93670.000 100000.00 450.51 2.59 17015.79 1477.57 93730.000 12600.00 440.84 3.91 2293.26 440.38 93730.000 55000.00 445.78 3.90 9150.32 1414.91 93730.000 100000.00 450.54 1.72 17098.47 1489.18 93760.000 12600.00 440.89 3.88 2295.61 440.70 93760.000 55000.00 445.89 3.72 9163.19 1419.36 93760.000 100000.00 450.55 1.72 17137.78 1495.51 93810.000 12600.00 441.06 3.17 2301.27 442.70 93810.000 55000.00 446.02 3.60 9194.24 1428.26 93810.000 100000.00 450.59 2.59 17215.40 1506.49 97570.000 12600.00 442.22 1.98 2902.43 689.13 97570.000 55000.00 446.78 2.29 11374.26 1856.46 97570.000 100000.00 450.94 2.10 21324.55 1963.25 98450.000 12600.00 442.46 3.05 3126.93 800.78 98450.000 55000.00 446.97 2.75 12277.23 2026.89 98450.000 100000.00 451.05 2.33 22936.60 2136.51 99280.000 12600.00 442.91 2.78 3303.98 892.27 99280.000 55000.00 447.23 2.80 13090.45 2189.53 99280.000 100000.00 451.19 2.48 24411.00 2301.58 100040.000 12600.00 443.31 2.39 3497.98 989.51 100040.000 55000.00 447.52 2.67 13881.77 2345.25 100040.000 100000.00 451.35 2.46 25812.47 2458.61 Information shown on Table E-10 is for the 2-year, li)0-year and the Standard Project Flood (SPF), respectively, for a fully developed watershed. E-26 Request For Conditional Letter of Map Revision On The Elm Fork of the Trinity River - Sandy Lake Road Bridge Hydraulic Study In the Cities of Carrollton, Coppell and Dallas, Texas Prepared for: Dallas County, Texas By: Halff Associates, Inc. 8616 Northwest plaza Drive Dallas, Texas 75225 This document is for permitting purposes only and is not intended for Bidding or Consu'uction. ' June 1994 DRAFT June, 1994 Federal Emergency Management Agency 1725 I. Street N. Washington, DC 20472 Attn: Mr. Alan Johnson Request for Conditional Letter of Map Revision on the Elm Fork of the Trinity River in the Cities of Carrollton, Coppell and Dallas, Texas Sandy Lake Road Bridge Hydraulic Study Dear Mr. Johnson: Enclosed you will Find a technical mpon on proposed improvements to Sandy Lake Road on the Elm Fork - Trinity River. This report, prepared by Halff Associates, Inc. for Dallas County Public Works Department, contains the technical data required for issuance of a Conditional Letter of Map Revision. An analysis of fully developed watershed conditions is also included as required by the City of Coppcll's Flood Plain Ordinance No. 87390, City of Carrollton's Flood Plain Ordinance No. 1964, and City of Dallas Flood Plain Ordinance No. 19686. Hard copies of the required HEC-2 hydraulic models, a diskette containing input data files, and flood plain and floodway mapping can be found in Appendices A through J. Application/Certification Forms arc included in Section H. The base hydraulic models utiliTe. d for this study are as approved by FEMA for the City of Carrollton prelimlnaty FlS update maps published May 27, 1993. The preliminary FIS model was obtained through the FEMA Project Library and verified through Dewberry and Davis Consulting Engineers for this FIS update. This flood conu:ol project is sponsored by Dallas County and the Cities of Dallas, Can'ollton, and Coppell for the public benefit, therefore no review fee is included as specified in Section 72.5 of the FEMA regulations. If you have any technical questions on this report, please contact Dallas County's technical consultant, Ms. Jean Hansen, Halff Associates, Inc. (214-739-0094). Administrative questions should be directed to Mr. Ben Cemosek, P.E. at the City of Dallas (214-948-4688). Thank you for your consideration of this request. Yours very truly, CITY OF DALLAS Enclosure CC: Mr. Jack Quarles, FEMA Region VI Ms. Jean Hansen, Halff Associates, Inc. Mr. Bill Jessup, Dallas County Public Works Mrs. Jill Jordan, P.E Interim Director of Public Works SANDY LAKE ROAD HYDRAULIC STUDY TABLE OF CONTENTS Introduction Application/Certification Forms with Attachments Form I - Revision Requestor and Community Official Form Attachment 1A - Proposed Encroachments Form 2 - Certification by Registered Professional Engineer Form 4 - Riverfine Hydraulic Analysis Form Attachment 4A - Svmmary of Hydraulic Models Attachment 4B - Analysis of 'n' values Photographs Form 5 - Riverine/Coastal Mapping Form Attachtnent 5A - Revised flood plain and floodway boundaxles Form 6 - Channelization Form Form 7 - Bridge/Culvert Form Appendix A. Figures Appendix B. Appendix C. Appendix D. Appendix E. Appendix F. Appendix G. Appendix H. Appendix I. Appendix J. APPENDICES Revision Request Acknowledgements City of Carrollton City of Coppell Geotechnical Report FIS Exist. Conditions (multi-proffie) Hec-2 Model (Replicalion - SHF. LREV2) FIS Exist. Conditions Floodway Hec-2 Model (Replicalion - SHFDWY-2) Corrected Exist. Conditions (multi-profile) Hee-2 Model (REVBASE) Corrected Exist. Conditions Floodway Hec-2 Model (RVEXFDW2) Proposed Conditions (multi-profile) Hee-2 Model (SI-II~I .PRO) Proposed Conditions Floodway Hec-2 Model (PROPFDVv'Y) HEC-2 Input Data Files ~age # I-1 H-I H-6 11-7 11-8 H-13 H-18 11-20 11-28 11-31 H-32 11-35 Table 4A- 1 Table 4A-2 Table 4A-3 Table 4A-4 Table 4A-5 Table 4A-6 Table 4A-7 Table 4A-8 Table 4A-9 LIST OF TABLES High Water Dam - 1989 & 1990 Floods Comparison of Recorded vs. Computed Water Surface Elevations Flow Distribution - 100 -year Flood Manning's 'n' Value Comparison FEMA Form 4 - Water Surface Elevation (WSEL) Check Duplicate vs. Corrected Effective Water Surface Elevations Comparison of WSEL's and Velocities - Existing Landuse Discharges Comparison of 100-year WSEL's - Fully Developed Landuse Discharges Comparison of SPF WSEL's - Fully Developed Land use II-14 II-15 II-16 11-18 II-22 II-24 II-25 II-26 LI-27 Figare I Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 LIST OF FIGURES IN APPENDIX A Location Map 1994 Revised Base vs. 1991 FIS Cross Sections 2A Section 88160 (88150) 2B Section 89230 (89050) 2C Section 90210 (90000) 2D Section 91050 (90880) 2E Section 92050 (92090) 2F Section 93660 (93620) 2G Section 93710 (93670) 2H Section 93750 (93730) 21 Section 93840 03810) 2J Section 97710 (97570) 2K Section 98460 (98450) 2L Section 99420 (99280) Flood Plain Information - Revised Base (Corrected Effective) Proposed Flood Plain and Floodway Revised Base vs. Proposed Condition Cross Sections Proposed Condition Profile FEMA FIRM Maps 7A City of Carrollton FIRM (preliminary) dated 4-92 7B City of Carrollton FIRM (preliminary) dated 5-93 7C City of Coppell FIRM dated 4-94 7D City of Dallas FIRM dated 7-91 Plan View and Cross Section of Proposed Sandy Lake Road Bridge I. Introduction Appendix A Figures ~"~"~ "" ' < CITY OF ' :: .-. ~. ' . ~ CARROLLTON /,"" >'/ SITE LOCATION /,' ,/V;.',. , ~ '," ~ i~: .', ":'.//,?,',..~. .. .,. ' ~:}'~' CITY OF ish';'.DALLAS 'v.v:.. ',. / ::.'.., ; I ~ ~CARF -~L~' ' I 1 """" ' ,,:," ,~:.',,E ~ " ' II CARROLLTON. TEX. N3252,5-W9652 5/? 5 1959 ROAD CLASSIFICATION Ifeavyduty Light-duty ........... r4edium chlty ....... Unimproved did C.) ',"~'.~',"~ ~""'~ r_5 ,~ .~. ,~o,,le C> s,.,e FIGURE 1 LOCATION MAP ¢80 470 J 460 _ 450 HALFF ASSOCIATES, INC. - Z 0 430 m tilllillI DALLAS, TX /. 100-YEA. SPF ~.~1 O-YEAR ~ 50-YEAR 480 470 4~ 450 440 430 > Z LU UJ Z 420 8800O ~1000 I 92000 93000 94000 95000 DISTANCE IN FEET 9~OOO I I 420 410 400 97000 98000 99000 100000 ELM FORK - TRINTY RIVER SANDY LAKE ROAD PROPOSED CONDITION MODEL EXISTING LANDGSE ~ 29, 1994 ~ WATBq SLIt~AC~ ~ FIGURE 6 HALFF ASSOCIATES APPROXIMATE SCAL[ 1000 0 FIRM FLOOD INSURANCE RATE MAP CITY OF '1 CARROLLTON, TEXAS DALLAS, DENTON AND COLLIN COUNTIES COMMUHITY-PAHEL NUMBER 480167 0010 E 10(]O FEET t I?1 IA' //'///' LEGEND -*, CORRECTED/PROPOSED FLOODWAY REVISED FLOODPLAIN AND FLOODWAY FIGURE 7A I1 × ,,, 0 N FIRM FLOOD INSUR C[ RATE MAP L ENAN ' CITY OF cA du,To , TEXAS DALLAS, D TON AND CO LIN COUNTIE$ COMMUNITY-PANEL NUMBER 480167 0015 E LEGEND SPECIAL FLOOD HAZARD AREA~ INI, NOATED BY 100-YEAR FLOOD FLOODWAY AREAS IN ZONE ~,E OTHER FLOOD AREAS OTHER AREAS CORRECTED / PROPOSED FLOODWAy REVISED FLOODPLAIN' AND FLOODWAY FIGURE 7B L L q t HALFF ASSOCZATES ~ X 8F-RK$~RE FIRM FLOOD INSURANCE RATE MAP x CiTY OF w COPPELL, o TEXAS i'~ AND DENTON COUNTIES ' ~ DALLAS ~ ~ :~ ~ COMMII!fiTY-PANIEt IIUIIIER ":':,; , 480170 0010 E :. ; MAP REVISED: - ,-' APRIL 15, 1994 "': '~' ,/ LECEND x , ~ % OTHE~ FI.OOO , i:~ - · =,= /-.~, .~ ............... ...,,...,. _...,,, ,~ ............. i ~,=, ~/~-" '""""~'= ..........""'~""""":""""' , i ~ ,/ i ] OTI~E~ ,~t,,~ I" ~ ~ ~ CORRECTION TO ~ ! ~ I00 - YEAR FLOODPLAIN // I :~ ~ CORRECTED / PROPOSED ii t 7 ~ ~ FLOOOWAY , REVISED FLOODPLAIN AND FLOODWAY FIGURE 7C i HALFF ASSOC]:ATES FIRM FLOOD. INSURANCE RI ATE MAP ~ DALLAS, DENTON, COLLIN, !~ .... ,r ,,l~l,t,~,~ COMMUNITY-PANEL NUMBER i~ ~0 71 ~20 D ~! ~ *EXPLANATION OF ZONE DESIGNATIONS 7( I~lt EXPt ANAl ION CORRECTED / PROPOSED FLOODWAY ~ REVISED FLOODPLAIN ,.,.ox,u~,,c,~E AND FLOODWAY FIGURE 7D PROPOSEB 8RIOG~ SEC 'ION STATIONS FRCil HYDRAIJI,IC MODEL f F-- f f f f f f F r f Appendix F Corrected Exist. Conditions (multi-profile) HF, C-2 Model (REVBASE) Water Surface Profiles Version 4.6.2 May 1991 Run date June 23 94 US Army Corp Of Engineers Hydrologic Engineering Center F F F F F F F F F F F F F F F · X XXXXIXX XXXXX X X X X X X X · X XXXXXXX XZXX · X X X X X · X X X · X XXXXXXX XXXXX XXXXX XXxxX X X X XXXXX X X XXXXXXX PAO I F .05 1130 4100,0 5675.0 1835 449.32 444.34 2031,3 449.34 443.65 2295 450 443,65 4631.S 449.43 444,40 ~200.0 1470,0 434. 426. 460 440, 410, 422, 432. 430. 444,3 435.2 442, 4250 ,00 434 430 460 410.00 438,00 437.00 432.00 450.00 438 430,59 428.3 435 450,00 417 411.3 422.71 431.5 450 434,6( 433.3 434,14 450 430.00 449,50 °05 1250.0 F F F F F F F F F F F F F F F F F 88050 20 20 11480. 20 1850 430.0 1420 13404 3000 F F F F F F F I F F F F F F F F F F F 447.7 2730 ,075 2454 .30 9120 F F- F F F F F F F F r r F F r F F F F F F F F F F F F F F F F .15 68o0 443 2000 3300 58o0 442. 8735 439.0 1117 1328 2200 442,3 444.30 443.52 444.32 443,73 443.44 436.00 447,85 2200 8735 2450 442.0 454,2 439.0 445,6 446.6 .040 8800 2160 3301 7425 .o40 e8oo PAGg 446,0 1129 F 10030 X2 F F F PAGB F F F F F F F F F F F F F F F F F F F F F F F r r F r F F F /.= d: oQO pA~B 78 F F FLOODPLAIN HYDRAULICS STUDY ELM FORK TRINITY RIVER FOR CONDITIONAL LETTER OF MAP REVISION REQUEST .. 18.9 ACRE SANDY LAKE ROAD PROPERTY CITY OF COPPELL, TEXAS Dallas, Texas (114) Nathan D. Maier July 30, 1996 Mr. Ken Griffin, P.E. City Engineer, City of Coppell 255 Parkway Boulevard Coppell, Texas 75019 NATHAN D. MAIER CONSULTING ENGINEERS. INC. Subject: Floodplain Hydraulics Study Conditional Letter of Map Revision Request 18.9 acre Sandy Lake Road Property Dear Mr. Griffin: We are hereby initiating a request for a Conditional Letter of Map Revision (CLOMR) for an 18.9 acre tract of land located adjacent to Sandy Lake Road. This study report addresses the floodplain hydraulic analyses performed in accordance with the regulations of the National Flood Insurance Program (NFIP) as administered by the Federal Emergency Management Agency (FEMA). The text explains the procedures followed and the results of the evaluations, supported by ten appendices of technical data. This is intended as a complete package for review by the City of Coppell (City) and the FEMA. The required FEMA ApplicationJCer'df'xcation Forms are provided in Appendix C. City approval of this CLOMR request should be indicated by execution of the signature block at the end of the Revision Requestor end Community Official Form (Form 1). If you have any questions or need any additional information, please let us know. Thank you for your assistance. Sincerely, NATHAN D. MAIER CONSULTING ENGINEERS, INC. Mark D. Walter, P.E. Three NorthPerk / 8800 N. Central Expwy, / Suite 300 / Dallas, Texas 75231 f f- r r r r TABLE OF CONTENTS INTRODUCTION ..................................................................................................................1 METHODOLOGY .................................................................................................................2 RESULTS ..............................................................................................................................4 CONCLUSIONS ...................................................................................................................15 APPENDICES A .......................................................................................................................Location Map B ..................................................................................................FLood Insurance Rate Maps C .................................................................................FEMA Application/Certification Forms D ..............................................................Duplicate Effective MS Multi-Profile HEC-2 Model E ........................................................................................Existing Conditions HEC-2 Model F ......................................................................................Proposed Conditions HEC-2 Model G .....................................................................................................Floodway HEC-2 Models H ......................................................................................................................Cross Sections I ............................................................................................................Floodplain Work Map J .........................................................................................................................Grading Plan r METHODOLOGY The floodplain hydraulics are analyzed in this study using computer modeling techniques. The computer program HEC-2 Waler Surfoce Profiles developed by the Hydrologic Engineering Center of the COE is used for this purpose (Version 4,6.2; May 1991). The effective FIS multi-profile and floodway models for the Elm Fork were obtained. These HEC-2 models are duplicated as the initial step in this study. The duplicate multi-profile model is provided in Appendix D and the duplicate floodway model in the first part of Appendix G. As shown in the multi-profile model, the peak flow rates for the project segment of the Elm Fork are 24,300 cubic feet per second (cfs) for the 10-year flood, 37,100 cfs for the SO-year, 44,350 cfs for the 100-year and 60,400 cfs for the 500-year flood event. These same discharges are used for all evaluations performed in this study. The duplicate FIS HEC-2 model is modified first to reflect the existing project site conditions. The distance from the main channel to the property located in the fight (facing downstream) overbank is determined by scaling from aerial topographic mapping. The ground points within the segment of the cross section representing the project site are replaced with data based on field surveys performed by Nathan D. Maier Consulting Engineers, Inc. (NDMCE) in March 1996. The cross section in the duplicate FIS model located at stream station 938+10 traverses the Sandy Lake Road Property and is modified as described to represent existing conditions. The next section in the model is located 3760 feet upstream. These modifications result in the existing conditions HEC-2 multi-profile model. The input and output listings for this model are provided in Appendix E. Modifications proposed for the Sandy Lake Road Property consist of earthwork operations only. Fill is to be placed in the western portion of the property to reclaim the area for the ultimate site development. The fill will be placed and compacted to densities acceptable under the FEMA regulations. The fill will extend upward from the hank of Denton Creek along the north side of the proper~:y on a 4:1 (H:V) slope to a minimum elevation of 447. On the south side of the property adjacent to Sandy Lake Road, the roadway is to be improved in the near future and additional right of way expansion into the property is planned. The location of the proposed right of way is determined from construction plans obtained from the Dallas County Department of Public Works (County Project No. 91-830, by Sverdrup Corp.; March 1996). The horizontal location of the right of way is matched by the proposed fill to be placed for this project. The top of fill elevation is also adjusted to match the grades proposed as per the roadway construction plans. The east and northeast areas of the site are to be excavated. Excavation will be from the property line on a 4:1 slope, then outward to Denton Creek on a 1.0% slope. The bank of Denton Creek is to be cut to an elevation of 432. This elevation is based on being one foot above the crest elevation of Carrollton Dam as determined from the Elm Fork flood profiles contained in the FIS report. This structure is located a short distance downstream of Sandy Lake Road on the Elm Fork and controls the normal water surface for this section of the Elm 2 Fork and for Denton Creek. With the one foot provided to the low cut elevation, the property will not be encroached into by normal or low flow conditions for Denton Creek. Two small ponds are located in the northeast portion of the Sandy Lake Road Property. These ponds are to be left in their existing condition, with excavation to be terminated along the perimeters of the ponds at one foot above the normal pool elevation. The ponds will be protected from sedimentation during construction by placement of silt fences. All disturbed areas will be restored following construction by re-establishment of native grasses. The proposed site grading is shown on the Grading Plan in Appendix J. The section in the existing conditions HIEC-2 model is modified to represent the proposed grading as described above. The resulting proposed conditions HEC-2 multi-profile model is provided in Appendix F. The cross section located at stream station 938+10 is plotted. with existing and proposed configurations superimposed and is contained in Appendix H. The plan view locations of the sections are shown on the Floodplain Work Map which can be found in Appendix L Floodway models are also derived for existing and proposed floodplain conditions. The floodway limits for the cross section at stream station 938+10 are based on encroachment Method 1, as taken directly from the duplicate floodway model. The entire site is located in the floodway fringe area as defined at this cross section location. The existing and proposed conditions floodway models are provided in the middle and latter portions of Appendix G, respectively. r t RESULTS The impacts of the proposed modifications to the Sandy Lake Road Property upon the Elm Fork floodplains are analyzed in this study. The 100-year water surface elevations vary from 445.21 at the downstream end of the site to 445,29 at the upstream end. Elevations for the 500-year floodplain range from 446.90 to 446.96. These elevations are essentially the same for both the existing and proposed conditions as defined in this study. Greater detail is provided by the Water Surface Elevation Check Table contained within the FEMA Forms of Appendix C, The floodplain delineations are shown on the Floodplain Work Map provided in Appendix I. Based on the existing floodplain conditions defined in this study, 3.7 acres of the site are above the 100-year floodplain, while the entire existing site is inundated by the 500-year flood event. With the proposed ~ading implemented, 11.4 acres of the Sandy Lake Road Property are removed from the 100-year floodplain and 11.0 acres are above the 500-year floodplain elevation. The changes to the FIRM that result from the proposed project are shown in the latter part of Appendix B. The entire project site is outside of the regulatory floodway based on the floodway limits at stream station 938+10 in the duplicate FIS floodway model. However, based on the plan view projection of the floodway limits from the FIRM, the northeast and northern parts of the property are located within the floodway, as shown on the Floodplain Work Map in Appendix I. The next section in the effective FIS floodway model is located over 3700 feet upstream from the section at 938+10; far beyond the project site limits. Also, the majority of the site that is within the projected floodway limits is to be excavated, which will increase the conveyance available within the floodway. 4 NOT TO SCALE Project Site cl'f' PINYrib ~, AP ELEA ~ L qLLARD ~ELT LINE ~'ANI~Y LAK~ I~OAD DALLA$ ,T',' LI.IT CARRDLLTDN - Pop 82,169 Mclnn,sh LOUIS ..... & . SOUTHVE$TERN - :_ . . ,_ ~_, . DALLAS SITY LIMIT ~LTON CITY LIMIT CITY LIMIT MAP C r ¢ r r f r r f~ f f r f f f f f f 8888 8888 8888 8888 8888 8888 8888 iF iF iF- iF ~ IF IF IF IF IF IF IF IF IF r r r r r r F f t~ SCALE 1 "-400' FLOODWAY DUPLICATION MODEL HEC-2 Water Surface Profiles US ARMY CORP OF ENGINEERS Duplication Model Water Surface Profiles -10 Duplication Model Duplication Model 20Jan99 16:34:12 93760 3000 8800 30 30 Duplication Model 20 Jan 99 ST 4.~ 1930 9480 xl 98450 49 4035 4215 800 700 880 GR 45~ 1000 444 1030 441.5 1190 639.7 1200 439,? 1830 Duplication Model 20Jan99 I6:34:12 GR 444.2 7408, 444.8 ?823. 44~.2 7947. 44~.7 7992' 444.3 8019- Duplication Model 20JAN99 16~34:12 Duplication Model 20Jan99 Duplication Model 20Jan99 Duplciation Model 20Jan99 FLOODPLAIN MULTIPLE PROFILE DUPLICATION MODEL Water Surface Profiles Version 4.6.2; May 1991 , RUN DATE 24APR99 TIME 14:22:34 * DUPLICATION MODEL MULTIPLE PROFILE X X XFJ~ X X X X X X XXXXXXX XXXX X X X X X X X X US Army Corp of Engineers Duplication Model Multiple Profile 24,APR99 14:22~34 Version 4.6.2; may 1991 DUPLICATION OF EFFECTIVIE FIS MULTI-PROFILE MODEL 10-YEAR DISCHARGES ELM FORK TRINITY RIVER ~LDC IBW -10 NC .08 QT 4 .06 .075 .1 .2 24300 37100 44350 60400 STARTING WATBR SURFACB BLBVATIONS BSTIMATBD FROM FIS FLOOD PROFILES X1 90000 40 9412 9733 GR 490 1000 442 1010 440.8 1285 440.7 1810 440 2120 Xl 90880 45 7729 7990 500 780 880 GR 438 1000 438 1920 440 2230 440 2640 436.9 2870 Duplication Model Multiple Profile GR 14:22:34 X1 92090 48 9000 9320 964 1234 1210 GR 452.80 1000 482.40 1100. 444.3 1300 444.20 1400 442.4 1600 X1 92300 42 7703 7969 210 210 210 GR 438 1000 438 1680 438.6 2280 441.1 2710 438 3080 NC .07 .06 .06 Xl 93620 49 8200 8380 2870 1420 1320. GR 448 1000 445 1080 446 1180 446 1240 441 1530 GR 440 2300 439.5 2700 440.5 2900 439 3010 438.5 3300. GR 445 1000 445 1080 445 1180 446 1240 441 1530. PAG8 Duplication Model Multiple Profile 24APR99 14:22:34 NC .3 .5 X1 93730 44. 8490 8800 60 60 60. BT 2 8490 443.S 439.5 8800 448.5 444.6 93760 X2 30 30 30 442 447 442 437.5 443.5 418 446 445 2480 5220. 6890 8030 8170 8650 8870 10420 NC .07 .07 .06 X1 93810 58 8200 8450 S0 50 S0 GR 445 1000 445 1080 446 1180 446 1240 441 1530 GR 440 2300 439.5 2700 440.5 2900 439 3010 438.5 3300 X1 97570 56 5490 5680 2100 1700 3760 PAGE X1 98450 49 4035 4215 800 700 880 GR 451 1000 444 1030 441.S 1190 439.7 1200 439.7 1830 Duplication Model Multiple Profile 14:22:34 GR 441.6 7800 442 8200 443.6 8800 443.8 8900 446.5 9000 9305 X1 99280 49 4035 4215 780 780 830 GR 481 1000 444 1030 441.5 1190 439.7 1200 439.7 1830 X1 100040 49 4038 4218 760 760 760 GR 451 1000 444 1030 441.5 1190 439.7 1200 439,7 1830 GR 442 1840 440.S 2500 441.2 2925 442.5 3080 443 3180 PAGE X1 103060 96 3333. 3533. 1880.0 1775.0 3020.0 GR 455.5 1000. 481.7 1023. 448.7 1146. 447.7 1154. 446.6 1229. Duplication Model Multiple Profile 24APR99 X1 106080 GR 460 GR 447.8 GR 432.5 GR 450 GR 449 GR 445 GR 446 14:22:34 82 2630. 2850. 1850.0 177~.0 3020.0 1000 453.5 1160 480 1440 451 1870 453 2220 Duplication Model Multiple Profile 24APR99 14:22:34 DUPLICATION OF EFFECTIVE FIS MULTI-PROFILE MODEL 50- YEAR DISCHARGE ELM FORK TRINITY RIVER PAGE Duplication Model Multiple Profile Duplication of effective FIS multiple - profile model 100-year discharge elm fork trinity river T2 24APR99 14:22:34 4 443.41 J2 NPROF IP~OT PRFVS XSECV XSBCM FN ALLDC IBW CHNIM FQ ITRACB DUPLICATION MODEL MULTIPLE PROFILE T2 T3 PAGE PAGE 9 Duplication Model Multiple Profile Water surface profiles Version 4.6.2; May 1991 90000.000 .00 .00 .00 409.60 24300.00 439.30 .00 439.64 12.62 6840.27 90000.000 .00 .00 .00 409.60 37100.00 441.80 .00 441.86 5.86 15340.66 90000.000 .00 .00 .00 409.60 44350.00 443.41 .00 443.44 3.32 24347.15 90000.000 .00 .00 .00 409.60 60400.00 445.90 .00 445.92 1.84 44528.46 90880.000 880.00 .00 .00 414.50 24300.00 440.01 ,00 440.11 6.63 9436.10 90880.000 880.00 .00 .00 414.50 37100.00 442.14 .00 442.19 4.14 18244.21 90880.000 880.00 .00 .00 414.50 44350.00 443.60 .00 443.64 2.76 26690.91 90880.000 880,00 .00 .00 414.80 60400.00 446.01 .00 446.03 1.78 45260.51 92090.000 1210.00 .00 .00 410.60 24300.00 440.72 .0O 440.80 5.51 10348.14 92090.000 1210.00 .00 .00 410.60 37100.00 442.60 .00 442.66 4.34 17804.15 92090.000 1210.00 .0O .00 410.60 44360.00 443.91 .00 443.95 2.99 3.67 11404.23 2.81 24447.14 2.26 35733.24 1.85 59747.54 2.75 14743.68 2.39 27391.50 2.08 36481.13 1.82 56006.86 2.55 15035.36 2.39 26899.09 2,09 37021.61 1.75 61190.09 * 93670.000 50.00 .00 .00 421.00 24300,00 442.12 .00 442.32 41.14 5.11 8140.43 3788.51 93670.000 60.00 .00 .00 431.00 37100.00 443.82 .00 443.93 18.47 4.05 16722.75 8631.77 93670.000 50.00 .00 .00 431.00 44350.00 444.82 .00 444.90 11.04 3.41 25430.74 13349.95 93670.000 50.00 .00 .00 431.00 60400.00 446.76 .00 446.78 4.93 2.61 45478.22 93620.000 1320.00 .00 .00 414.50 24300.00 441.90 .00 442.22 10.91 5.33 9090.01 7397.96 93620.000 1320.00 .00 ,00 414.50 37100.00 443.62 .00 443,85 9.42 5.17 16005.99 12087.92 93620,000 1310.00 .00 .00 414.50 44350.00 444.69 .00 444.84 7.07 4.73 22800.47 16681.18 93620.000 1320.00 ,00 .00 414.50 60400.00 446.69 .00 446.76 3.69 3.64 42684.94 31428.60 92300.000 210.00 .00 .00 415.10 24300.00 440.85 .00 440.92 4.98 2.37 18273.26 10894.23 92300.000 210.00 ,00 .00 415,10 37100.00 442.70 ,00 442.74 3.50 2.17 31155.26 19832.31 92300.000 210.00 .00 .00 415.10 44350.00 443.98 .00 444.01 2.47 1.93 40568.76 28233.98 92300.000 210.00 .00 .00 415.10 60400.00 446.24 .00 446.26 1.58 1.68 62247.29 48115.69 Duplication Model Multiple Profiles 27196.46 93730.000 3300.21 93730.000 4708.26 93730.000 6597.62 93730.000 14602.01 60.00 443.60 444.60 614.50 24300.00 442.24 60.00 443.60 444,60 414.S0 37100.00 443.88 60.00 443.60 444.60 414.50 44360.00 444.88 .00 .00 .00 .00 442.77 444.23 445.08 446.85 54,22 62.09 45.19 17.11 6.31 4617.07 6.94 9052.19 4.61 13469.73 2.70 29733.11 Duplication Model Multiple Profiles 24APR99 SBCN0 14:22:34 93760.000 30.00 443.80 444.60 414.50 24300.00 442.49 .00 93810.000 S0.00 .00 .00 414.50 24300.00 442.99 .00 9572.01 93810.000 80.00 .00 .00 414.50 37100.00 444.4~ .00 97570.000 3760.00 .00 .00 423.00 24300.00 444.01 .00 16790.19 97570.000 3760.00 .00 .00 423.00 37100.00 445.32 25874.44 97570.000 3760.00 .00 .00 423.00 44350.00 448.98 ,00 31239.03 97870.000 3760.00 .00 .00 423.00 60400.00 447.44 .00 98480.000 880.00 .00 .00 426.00 24300.00 444.24 .00 9993,12 98450.000 880.00 .00 .00 426.00 37100.00 448.54 .00 16285.66 99280.000 830.00 .00 .00 428.00 24300.00 444.66 .00 11870.13 99280.000 830.00 .00 .00 428.00 37100.00 445.91 .00 18433.78 100040.000 760.00 .00 ,00 428.30 24300.00 444.09 .00 12215.08 100040.000 760.00 .00 .00 428.30 37100.00 446.22 .00 100040.000 760.00 .00 .00 428,30 44350.00 446.83 23330,86 100040.000 760.00 .00 .00 428.30 60400.00 448.15 .00 33906.21 103060.000 3020.00 ,00 .00 430.00 24300.00 446.53 ,00 * 106080.000 3020.00 ,00 ,00 420.00 24300.00 449.09 .00 442.95 444,43 445.21 446.01 443.12 444.55 445.29 446.94 444.03 445.35 446.00 447,46 444.31 445.60 446.24 447.66 445.02 446.24 446.86 448.18 446.66 447.69 448.20 449.28 449.13 450.16 450,62 451.82 VCH 60.38 52.14 39.85 2.09 2.06 2.02 1.76 5.91 5.19 4.82 3.87 4.41 4.05 3.87 3.32 3.96 3.74 3.61 3.17 20.67 17.88 16.04 12.45 7.75 9.08 9.70 10,74 5.99 5111,22 5.25 10206.48 4.30 14394.64 2.64 30311.86 3.66 13678.47 3.64 23638.37 3,43 31103.70 2,91 49006.05 2.05 29818.52 2.17 41601.75 2.31 47601.16 2.19 63955.03 3,34 18007,68 3.28 28808.39 3.25 34038.73 3.09 47419.78 2.73 23600.43 2.75 32752.93 2.77 37937.84 2.73 50699.86 2,42 23936.13 2.50 33931.84 2.94 39065.74 2.54 01874.95 4.68 12626.92 4.55 19933,27 4.44 24275.03 4.13 33961.10 2.72 17426.80 3.04 23292,89 3.19 36212.53 3.45 32405.79 Duplication Model Multiple Profiles DUPLICATION MODEL MULTIPLE PROFILE PAGE 11 ELM FORK TRINITY RIVER SECNO Q CWSEL DIPWSP DIFWSX DIFKWS TOPWID XLCM 90000.000 24300.00 438.30 .00 .00 .00 3794.98 .00 90000.000 37100.00 441.80 2~60 .00 .00 6597.43 .00 90000.000 44350.00 443.41 1.61 .00 .00 7382.51 .00 90000.000 60400.00 446.90 2.49 .00 .00 13164.89 .00 90880.000 24300.00 440.01 .00 .71 .00 S662.63 880.00 90880.000 37100.00 442.14 2.12 .34 .00 6149.13 880.00 90880.000 443S0.00 443.60 1.47 .19 .00 6232.86 880.00 90880.000 60400.00 446.01 2.41 .11 .00 10727.07 880.00 92090.000 24300.00 440.72 .00 .71 .00 5311.93 1210.00 92090.000 37100.00 443.60 1.88 .46 .00 7463.43 1210.00 92090.000 44350.00 443.91 1.31 .31 .00 7981.15 1210.00 92090.000 80400.00 446.20 2.29 .19 .00 12681.22 1210.00 93300.000 24300.00 440.86 .00 .13 .00 6484.84 210.00 92300.000 37100.00 442.70 1.88 .10 .00 7291.79 210.00 92300.000 44350.00 443.98 1.28 -07 .00 7437.88 210.00 92300.000 60400.00 446.24 2.26 .04 .00 11381.40 210.00 * 93620.000 24300.00 441.90 .OO 1.08 .00 3278.92 1320.00 ~ 93620.000 37100.00 443.62 1.72 .92 .00 4982.29 1320.00 * 93620.000 44350.00 444.69 1.07 .71 .00 7348.31 1320.00 , 93620.000 60400.00 446.69 2.00 .45 .00 10914.30 1320.00 * 93670.000 24300.00 442.12 .00 .22 .Q0 3564.06 50.00 93670.000 37100.00 443.82 1.69 .20 .O0 6884.92 50.00 93670.000 44360.00 444.82 1.01 .14 .00 9698.05 80.00 93670.000 60400.00 446.76 1.92 .05 .00 10987.82 50.00 93730.000 24300.00 442.24 .00 .12 .00 2067.72 60.00 · 93730.000 37100.00 443.88 1.64 .06 .00 4077.82 60.00 · 93730.000 44380.00 444.88 1.00 .06 .O0 S236.82 60.00 · 93730.000 60400.00 446.77 1.89 .03 .00 10128.98 60.00 93760.000 24300.00 442.49 .00 .2S .00 2282.21 30.00 93760.000 37100.00 444.16 1.68 .28 .00 4420.79 30.00 93760.000 44350.00 445.04 .88 .1E .00 7802.20 30.00 93760.000 60400.00 446.83 1.79 .08 .00 10182.90 30.00 93810.000 24300.00 442.99 .00 .S0 .00 8149.86 80.08 93810.000 37100.00 444.45 1.46 .29 .00 9166.88 50.00 93810.000 44380.00 445.22 .77 .18 .0O 10076.32 50.00 93810.000 60400.00 446.90 1.68 .07 .00 11007.69 50.00 DUPLICATION MODEL MULTIPLE PROFILE * 97570.000 97570.000 * 97S70.000 97570.000 14:22:34 24300.00 37100.00 44350.00 60400.00 444.01 448.32 445.98 447.44 DIFWSP DIFWSX DIFKWS TOPWID XLCH .00 1.02 .00 8882.05 3760.00 1.31 .87 .00 9082.11 3760.00 .66 .76 .00 9182.30 3760.00 1.46 .63 .00 11384.12 3760.00 * 98460.000 24300.00 444.24 .00 .23 .00 7426.82 880.00 , 98450.000 37100.00 445.54 1131 .22 .00 8024.05 880.00 * 98480.000 44350.00 446.19 .65 .21 .00 8302.07 880.00 , 98450.000 60400.00 447.61 1.42 .18 .00 10060.41 880.00 99280.000 24300.00 444.66 .00 .42 .00 7963.60 830.00 99280.000 37100.00 446.91 1.26 .37 .00 8207.25 830.00 99280.000 44350.00 446.54 .62 .36 .00 8487.64 830.00 98280.000 60400.00 447.90 1.36 .28 .00 10076.30 830.00 100040.000 24300.00 444.99 .00 .33 .00 8074.81 760.00 100040.000 37100.00 446.22 1.23 .30 .00 8248.01 760.00 100040.000 44350.00 446.83 .61 .29 .00 8535.51 760.00 100040.000 60400.00 448.15 1.32 .25 .00 10089.87 760.00 103060.000 24300.00 446.63 .00 1.54 .00 5966.49 3020.00 103060.000 37100.00 447.59 1.06 1.37 .00 8012.32 3020.00 103060.000 44350.00 448.11 .52 1.28 .00 8576.71 3020.00 103060.000 60400.00 449.21 1.10 1.06 .00 9062.54 3020.00 * 106080.000 24300.00 449.09 .00 2.56 .00 5672.68 3020.00 * 106080.000 37100.00 450.11 1.02 2.82 .00 5931.05 3020.00 106080.000 44350.00 450.57 .46 2.46 .00 6543.06 3020.00 106080.000 60400.00 451.45 .88 2.24 .00 7326.99 3020.00 DUPLICATION MODEL MULTIPLE PROFILE 14:22:3~ PAG~ 13 WARNING SECNO= 93670.000 PROFILE~ i Wa~ING SBCNO= 93810.000 PROFILEz WARNING SBCNO- 93810.000 PROPIL~s WA/~NING SECNO= 103060.000 PROPILE= WARNING SECNO= 103060.000 PROPILE= W~&~NING SECNO= 103060.000 PROFILE= WA!~ING SECNO= 103060.000 PROFILE= WAP, NING SECNO~ 106080.000 PROFILE= 1 WARNING SECNO= 106080.000 PROFILED 2 Upper Trinity River l\ . ~ Corps Model DelineatIons ~ Test Plots - October 1997 :; SHEET 53, 78 '-Ii " >, Legend "--' ""~- Delineation Fealures 988+84 'L-, - - - -"- - - - - - -- ....;.. - 500 Year Flood Boundary \' E:F",j1\:i1.OW!.1lie ::. 100 Year Flood Boundary ::;.~,. ~--I ~/ / /f ^ , \ _\_-- 979~"9 _ _ _ _ _ _ _ _ _ ---------C-I------- / 971+78 . 1_____________ - r -""m=c..oW"i= ::."!'~ -. -"'-1 / /'7 , I ...."" /// I /; W SPF Flood Boundary I J Cross Sections Existing Levee Centerlines Base Flood Elevation Floodway Boundary uu '" !-' ;, 939+-10 ~ " II ; '-- i to:. ..c- . . \' I~-~. s--- JI ~.~~.- ~.._ 011 r~~~~ ~ \;~~ ;-'; " I J. - - -,'1 .: J ~~I ) . --~,'-,-~ ( '-- ~.- .'"': , ~l ~~~"" ~~~"Tf- -,.:,: (-o:..;._ ., ~ '~- '\~\Jil - . -l..::- - ~ ., n~. < ..::,\.. .....)----~- \ ----- -----------. __H: '- I -'-~ '-- ")., <'----.l ,..> -~ (J " I l -....--- ~-_. ---- ;w.., ~---~\\~\ HEC-RAS Plan: 10,50, & I(:X) Rive: efl Reach: efl ~ .. ... ,':, -,..~ ;.- !.,-,. v..;; .... %' "~ ='" "'.'-' ~o' · ~:~'~ I. ~,,:.., ..... .i..J. . ,..= ~r,.- . ..,~ ,,;.; 21C~000 424.10 453.31 IV"" "' "'~"3CG'" ;~15253 ...... 189026 0.15 j_ef.q_.. . '. 11g'/14'~-':.; 21r. x~oo0 42770' 452.72 44249! 45279 0.030104 147 2354772 557383 0.07 224G1 CA1 428 54 224QQ OO: 422 10 22400 OO' 418.40 21000(]0 41673 21QQQ(:]Q 417 IQ Bridge 2100000 417.10 21CC000 417 10 21000.00; 41740 21O~OOO 41890! 3180000 422.60 31600C0 42250: Brm~ge 31600 00 422.50' 3160000, 42250, Bridge 3160000 422.50' 316C0 Cf,.1 422 50 31600.00' 42250'. 8ridge 316(X)00. 42250' 3160000' 42253~ 316(10Q0 42260 3160000 422 71 45263 44396 45266 00(10212 45241 44234 ~/52.44 00(X)185 452 181 43967! 452 20 0000126' 452.06 438 37 452 11 0 (X']0107 45206 43779 452.101 0000118 45205' 45209' 0000119 452.06 452(19~ 0000119 452 05 438 88 i 452.07' 0 0Q0066' 461 ~i 439.23 45203 0000096 451.67 44548 461 86! 0000774 451 35~ 44543i 451 75 0001133~ 451.24 44538 451 66~ 0Q01164 451 25 44564! 451.54 OCX:X3874= 461 05 445 64 451.36j 00CnmR 45083 445.381 451 31~ 0001351' 45076, 44543 451 25' 0C]014Q6 45060' 44539I' 451.12 O(X)147cJ' 45Q52: 44606 45003 0001270 .44~90! .4433/ 450Q5' 0(XX)765 449.43 446CYJ', 44950: OQQQ517. 44807 441 76 44806 OOYr'J~ 448 78 442 31 448 83 0.000260 44804 44401i 44807 OQQ0120 447.95 44392 44798 0~0|32' 447 81 444 Q9 447 84 O.OOO 145 44766 44412 44770i 000018;I .447.'~ 4439"2. 447.4~ O(XXX~24' 229 2Lx3i 204 2 f8 232; 233 233~ 170 201. 430 644 654: 565 581 693 701 715 664 441 3.20 379 304: 443 1 81 211 241i 288 3 07 28689 76 24509 01 25478 41 21206 78 18CX'3566 17~8532 1801349 24245 63 22315 4Q 9674 14 7412 51 729906 8447 77 8206QC) 679890 6710 42 6542 83 7860 93 1406685 1881800 20404.71 ' 25650 02 19868 57 3154647 32317.66. 3362325 3302580 33164 67. 6842 33 619G99: 4516C5 340096 3~17 ~138h ~ 15 11B~ 118502 1230 14 122661 1171.41 117919. 1177.33 138515 303381' 427307 5764 51 6128(15 5255 97 6843 82 7301 7705 96 6627 75 912634 0.10 0.11 0.C6 0.00 GC)9 0.0G 0.07 0.08 0.22 0.27 0.27 0.24 0.25 [~29 0.30 0.31 0.28 0.22 0. t7 0.16 0.18 0.(:]9 GCG 0.10 0.12 0.14 HEC-RAS Plan: 10,50, & 100 River: efl Reach: efl (Continued) (~ '.".."~',:~'" ~l':i:~:~,I ~m. 416m ~7~ ~. ~7 18 0~, 4~, ~221 ~ 5~m: o.~91 r , ' .... ~S", .' t ~ ~1 ~ ~22 0.~1~' 752· 11276~ 22~' 0·3t ' ' "~. 0m 5 6 0.= ~;~'~." ',.' ~.'~'~',"; ~22} ~.27 0~ 771 8~ 101977 0.~ 435(X).00 417.30 444 69 ~(30. 41750 44371 43500.00 417.50 443.70 ;di ': ",~,z54.5 i"., ': BrK:Ige ,L_~l_.".,.:_~'jI~,12_,~;~ ,4350()C30 41750 44369 "~e~" :"""'~""""~:~ 4350000 43370 44257 ,eft · ": "~ ~2361,',, .'.,, SO() o 41020 44296 ell . .:~. ~.gfm0~./'::,, 4355050', 41020 44291 ell .",' , ', ~oCT~' ~,... 4350000: 4C9.OOi 442.62 .ell': "':.', '.'.~87645.':,'~'i 3920000 40750. 44042: [efl.. ,.' ..,!',.~8,733g. ;' ' 39'2(30 00: 407.10 439.67 ,"-- ..... ' I'--'-'--~--'r~ ell , · i~NJ "~ · 3G2t'DO() 40651 43957 ~ I .3G20000 438.77; :eft, '. ,' 80579 .,. i 40200(')0 40450 43825 ~'~t;'~'.':"'7""7~'~7 .' i 4Lr20()O() 4(3620 43774 43922' 444.20; 0003695 779 840700 43901 44416~ 0501210 669 848899 438.56 44414: 0501291 705 815889 44144 44405 0~, 1428;: 5661.67 441.44 444 04 0.(X)2366; 14.33 5645 01 431 66. 443.74 0O(0927 6.75 9471 33 43166 44370 0000942 650 940393; 43421: 44313 00(X:)244 339 1441622i 43285. 44297' 00O(3083 1 77 22~6765 434.06 442.82~ 0000403 424 13891.13 43666 44252i 0000263 333' 1919675 42981 44209 0.501001 ~ 652j 1066689 42866 44096 0001104' 6.96! 1025G.79 42554 44082 0.000647 584 1101241 42554 44075' 0000662 590 1089996! 42552 44075 0(]00663 550 lf~°~24 42542. 44058 0001079 744 7173.64 42542' 44040: 0001135 42543 44038 0.501404 42534 44(311 0C)01171: 42512 43968' 0] 4274/ 4.'t;141 0000174 42585 43929 00[X1188 42750 43919 0000279 43081 43898 0C)(]0195 429.10 43884 QCX.10201 431 60 43866 0(300196 430.01 43836 OO(X:X356 42916, 43750 0000254 101942 1019 76 1C]Q050. 10000() 1071 07 107040 132344 2075 37 2477.15: 2309 78 1632 21 154764 1547 21 1547 78 876 67 7 5e eg93.93 873.62 789' 68S688 86650 698 86244G 143585 369 17811 6G: 2906.46 2.88 24630 cj(.); 36'24 O 7 230 2676248; 44G865 302 1882893' 300803 243 2460024; 306462 2,4G 2356619 390437 2 49 ?FR8.16 3827.96 3 41 19176 18 3~42 44 2.64 21.363.05 3283 17 0.33 0.28 0.29 0.87 0.87 G25 0.26 0.13 0.07 0.17 0.13 0.26 G27 0.21 0.21 0.21 0.27 0.28 0.29 0.26 0.15 0.11 0.1(] 0.13 0.11 0.11 0.11 0.14 0.11 HEC-RAS Ran: 10,50, & 100 River: ell Reach: ell (Continued) 'e~l:..'F,':-~:"7~('~,~_'~:~: 4020000' ,4(3680 437421 430.38 43750 ~68 2114441 327048 0.12 ,Fef'i":?~l~'~";.~[:' 40:3OQCO ~ 40680 43697. 428.14 437.01' 0O00133' 2.10' 2873857:/'~T 31W9408 ~.~ '~f'~. :. '. '~'[.,ei!2.'~ 4020000 401.03 43683' ,;12792' 436.88 QCX3QIb'2 256'. 2900311 312776 :;i;i;~"""'C..,'."~/,,;',,:.lr.; 402C3000 403.70, 43666. 42566i 43672; QI30QI7Q: 256' 2419171 302291 Q.1~ 4C)CX:X3OO 40093; 43658 426.22 43661 0.00CX:351 1 56 3101729 261538 0.06 401 10 43638~ 425.63 43651 0.00(3372 401 20 43556 42551 43587 0.001185 401 30 43519 43077 43572 0001159 :~1 .:' .' "!a'/3~:.,,:.':.::~ r~,l :..'.' · ~ 'e'r~;~' ..:,:.'.~ ;~'t '..' :.. ]emm:'."Z: I L~,i...:'.:..,.,, si~...'~.~:i , . '.....:,.:,.~,:.,.,c,..~ : 11 :..-.:... ,: 'aft'.' :.,~.' ' :i6~14~0' '!.~.'71 '~i~' ':""'.~.Z ' 644Da ..:..' .-' ! !ell , ,: 64405' ..' · , lefl'. ;:.Z, .",:: ~'7.:'.~'~"i,~:¢' .'.~...;.. I "'..":".'7; "..'... ..~F..::Z".:'!7'i~":.'.. ~ F~I '.,,..':.. gp~,:...,, i r,m. ~;.,.:. :. :-z'; ~ -~;. iefl . .: . . see12. · ',.~ ~-;7--.-7. i--~s~,.-..,.'-...-'j !ell · ,~ .;..'! ..... ' I .......,' 40C300C)0 4CX3OOOO 40CX3Q(3Q Bridge 4QCXX)OO 4QCX30OO 4OOC3Q.C30 4QCX:X)GO 4C3CX3:)00 40000.00 4OOCX)C3Q Bridge 4CX33000 4CX3OQO0 4C)CX30.00 Bridge. 4CX:X30OO 4QCIOOOO 40CX30(33 ,qOC)C3000 400CX:)OO 40CX3OCX) 40CX30C]O 4CX3OOC3O 4CX:X3OGO 4000000 4(X.X3QCX:) Bridge 40CX'3000 40C3CX) QQ' 4CX3C)000 401.30 434.95~ 0CX)1251 401 ..33 435 24 0 G:X3C97 401.40 434 88 O CX3C)787 401 4CIi 43434 0.C3C)0682 401.50 43375! 0000611 401 .~0 433 81 0 (]00720' 430.77 43552 427.17 435.52 426 31 435 31 430(30! 435 14:, 430.11 43460 42391 43419 42594 43374 41175. 43318 40439! 43312 4(3667 433(3g: 404.41 43305 410.57 43300 425 27 432.90 426 32 432 85 42633 432.71 427 37 432.53 420 24 4,32 36 401 50 43369 OCX'JO?51 401 50! 43369'~ OQOQ?51 401 60 4331~: OOQC)780 401 60 43346 0.000617' 401 60 43346 OCX:X~t7 401 80[ 43332j 0~7 4(.10.00 4,3314 00~0e2: 40000 43311 0[333017 4(30.00 433 01 0.01333~7 400.00. 433.01 0000013 4C1C1C30. 43291! 0CX30132: e · , 401 80' 4,32 67: O(XX3r~7' 401 ~C) 432 48 401 60 432.27 0001085 401 40 432 44 O~ 40280' 43~C]9'. OG:X3551' 411 199'2252i 545i 11174(36 741 1015654 7.64' 9841 57=· 7.64 _aq~'~4:~88' 214 2(X)2388 542 14(368.17 558 14171 657; 1301696 506 1374083 5. t4 1352332. 5 14 13521 90 522 1332685 531 13090.54 531; 13C8901 570' 1332546 1 ~8 :29974 67 2.32 1933391 I 08 37562 92, 294 2(3521 4 29 12027.25' 609 1(3641 97 660~ 1031402 369 26554b~2i 528 15060.79 220668 0.16 146901 0.23 1347.77 0.28 13463~ 0.2~ 134634 0.; 16655~ 0.06 1826 72 0.23i 193476 0.21 193043 0.26 18568~ 0.22 18563i 0.22 18~636 0.22 185493 0.23 185q 4; 0.23 185441 0.23 206G96 0.25 2429 40 0.08 2044 73 0.04 10G553 0.(:]8 11r~ 0.(]5 1450.81 0.04 206644 0.10 122533 0.21 106289 0.25 1061 91 0.27 3763 14 0.15 1780t'X:] 0.20 I ' ! '1 .... I ....1 '1 I HEC-RAS Plan: 10,50, & 100 River: efl Reach: efl (Continued) E-;~: ,:,.~..:.:"'~""}~!: Z:~:,'~ "' ""'~..· : '. . "~' """' ~' ;;.;. ;;.;.;;;'o°;;;.;'227- ,2773 ;;. ]~1 ',' ;'~ ~'.~=',".:'. ~ 9~' ~1 ~ ~ 14, ~1 26 0~. 1 16 ~ ~721 (1~ ;al'l ',." .' 51~(~:;.,~: I. 39400(X) 39560 431.24' ", ~'.', .. 4~qe~::;:.:.'! 39400003e570~ 431.12 ~dl '. '.; ,.. 48941:';~',~!:', 3G40000 3FJ660 43087 ~fl; ,'...TF 4eedl~ ~,S'!:i3~43000 396 71 43o85 ~'~1('~:'~... ~ ~: ~J~/~&'.~fBridge ;!'? ....,::..., o00,7, :eh ,. '~.,..77' J4eeoc,;~: "'~.i3e400.c0~es. e6'430.46 L~ '. '. ' .i :"'i "' ""'~':~ I~-00 00'~,.,0~o 27 ;ii" '- 4i3,5~,~'.-'.:'i39400003~64%429.54 f~fl.~":7.': ..' I_,~,!~.~.: ]394000042905 'eft '.... . 4/,~,.:..'."i411.00 3940000 41100 42905 ,r~...;;:'~ ..... ~':.'2~...~,]3e~o0042935. .';" ~' : ; ":,;: ' ~3z~x:~0 003as so42933' L~.~',~'.'-';';.'_.e~.e:.:'...';3~4m003345o:42904= erl . . , ,,~qtt'tS;' "'~Brk|Oe · 3~cx~00 39450~ 428e8= """'. :'. '. "".,T.~ s4mm s44~ 428ee' !~';T:;"'77'~ 39400 00 301.40 428 50 ~fi .':".' '. aa~. ::.....'-,~m m 38998 42843 r;."-..-'~, ..., :~:~ 396 70. . . . . .'.~."~. 37500 00 397 10 428 18' "i~ " "' ~ ' :'~''"37500.00297 10 428 13' 3= 00 7,0' 87' ;;i;""".i'~'..".:1 37~00m307.~42784 418 36 418 89 418967 420.00 419 82 41982 42054 421.40, 421.00 41763 414.63 425 15 414.66 41469 41792. 417.94 417.~4' 41792 417~) 41418I 41358 412.04 41205 41205' 41204 411 99 431 25 4111 71 (104 431 23 4337 34 (107 431 15: 4164 10 G00 43095 26G348 430 92 2473 00 43069 43066 43062 43037 42969 429 67 429 63 429.63 429 50 429.4~ 42921, 429.15: 429 10' 429 07 428 99 428 56 428.48. 428.33 428 25: 428. I g 428.13 0C3C)0018 1 0(330076 2 14 OCX:X3113i 2E6 0CX30226 345=. 0(300186 288 : 0030199 296I 0G30332: 468 0.0(X)320 455j 00G3307 391 0003357' 444' 0000304' 4t3~ 0000341 8 16 000(,X~1 8 16 0.000313 4 18 O(X)O3t5. 418 0000443 478i 0000293 388 00(30'296 391 0000462 486' 0000447; 4 14 0(X30189' 2821; OOnnPA4 226I 0000132 292 0(.300154 3.41, (1000186 3 42 0000424. 5.18 00(X3397 4.e9 4431938 19201 62 18675 10 19882.81 2969350 24677 85 20343.71 16590.50 2083607 20794 17 2026333 2023638 1981450 21762.21 23283.84 2954343, 1863399 1,545688 2473 130 245822: 2522.00 2718(30 314940 2377.05 2271 2'3' 2271 17 257583 234000 234000 2337/9. 2403 18 2386 72 28~02~ 136298 110668 11(3651 1105 19 0.13 0.11 0.12 0.19 0.18 0.15 (116 0.15 0.37 0.37 0.15 0.15 0.18 0.14 0.15 (118 0.16 0.10 0.10 0.12 0.12 (118 0.18 HEC-RAS Plan: 10.50, & 100 River: efl Reach: efl (Continued) ; .. /' · '.. '. . .'!~-.':7"'. """i "" :' '" ."! -'a~" .', .... ~,~ "~'.". ..:.--,',". '~7...', ~'.'~"..~, V,, ;' ' '. '. ~;f1.*!.:'*';'''' "' 3~r,;..::,i3750000' 3ram 4~70~ 41454 427.12' o.ocx)z~ 346 41483.95 423040 ~,~i~;~:~l~ 3750QClQ 393.40 42696 42037. 42706 0(X]0217 347 24155.24 373251 0.12 ~f:l"":','~.,'..,~:~l'~"~'~"'~ 37500(]0' 39340' 42676 41521i 42701 0Q00636 544' 2336472 371513 ,'~"~..: "."~, ~{~"~:;":'~,Z"!." 375QOQO' 39328 42685 41464 42692' OQQO',~5 3.41~ 3666889 374987. ~'1~';'T'' ;;';':,.;~:;~12/4~'io'~,37"~00' 3~000: 426.61' 412G6 42669 0.0:X)231! 361' 3320363; 334631 'eft. '~: ~..": '.:: 3;l'eO~;~'-~!;:;.!.~37500 OO' 389 61 ~ 426 43~: 411 05 426.50' 0 (X:X7205: 3 26' .3~617.70' 3452 78' 37sm.oo' 30' 4 633:411.10;42638i0 7' 24 ' 279685. '~f~"'5.~";~'~,~ 375(:X3C]Q 391.20 42623 41329 42628 O_n"r:'ta2 236, 2422878 181835. 375Q0(]0 391 3Q 426.21 41650 42627 OG:X)185 327 234066G' 176348 0.11 BrH:lge 375(3QQ0 391.30=· 42616; 41650. 42623~ OQCX3187 328 2332452 1763.28 0.11 375QOQO. 39130 42616 41650; 42622 0.Q00112 254: 'Y"'t":t2715 176328 0.Q9 375QOCX) 391 37 426.03 411 25 426 19 0.~7 427 2358936 17"-J::)OQ 0.16 375CX:IrJO 39060 42573 41315 42602 Q(:X~I 581 19615.40 175650 0.20 3'750000 38940 42553 411.58 42571 OG:X)43~ 470 2(]841.61 324996 0.17 3750000 38790: 42538'. 409.63! 42546" OQOQ177 3.37 2530258 252329 0.11 3~(3000 38630 42528 407.75 42534 0Q00144 3.02. '_26C'Ra~92 258318' 0.1(:] 375G).Q0 384.3~ 425.22 407.39 425.25 0.000060 1.99 33468.26 3403.94 0.07 37500.(:]0 386.00 425.19 410.22 425.22 0.0CXI:~6 1.89 ~.94 3873.28 0.0e 37500.00 388.20 425.10 415.33 425.16 0.{x)0181 3.29 36362.28 3031.69 0.11 375(]0.Q0 3~0.30 424.97 414.93 425.03 0.a30131 2.80 38602.80 3462.73 0.1C 375G3.Q0 390.80 424.97 416.14 425.01 0.Q00166 2.75 27502.42 2319.03 0.1C Bridge 375~0.Q0 390.80 424.94 416.14 424.98 0.C]Q0167 2.76 27447.44 2318.91 0.10 3?500.00 390.80 424.89 415.98 424.97 O.O:X)2r~ 3.41 27317.73 2318.63 0.13 37500.~0 3G1.00 424.89 415.21 424.94 0.000114 2.50 288:]6.30 2589.75 0.Q9 37200.00 389.90 424.85 415.32 424.89 0.0001(]6 2.51 33322.52 2767.96 0.09 3721X).00 388.90 424.79 414.93 424.81 O.CX:IX)42 1.55 44013.59 3770.94 0.06 37200.¢:30 387.80 424.68 4136.31 424.75 0.~ 2.81 47661.05 3478.36 0.10 378QO.CX:) 386.70 424.62 407.01 424.69 O.(:X:X~070 3.07 47320.01 3235.78 0.11 37800.C]0 386.70 424.62 407.02 424.69 O.CXX:3070 3.07 47310.o4 3235.77 0.11 37800.CX:) 407.(X) 424.57 413.41 424.e9 0.00(3071 4.Q8 46168.68 3181.35 0.18 378Q0.00 407.00 424.57 413.41 424.69 0.000071 4.C]8 46167.52 3181.35 0.18 I I 1 ! I ! I 1 I ! I 1 I ' I ! ! ! I 1 HEC-RAS Plan: 10,50, & 100 River: efl Reach: efl (Continued) 3780000' 37800 00 378430 CX:) 3780000 3780000 37800 00 3780000 Brdge 3780000 37800 3780060 3780000 37800 CO 378C]000 28900(]0 2890000 289Q0(30 2890000 289C]000 2890000 289C]0(30 2,890000 2890000 Bridge :28900G0 289CX:)00 289G')CX) 2890000 28900 Br~lge 386.50 3gO2t 39021 38990' 38ggO 38990 38ggO 38960 38940 38890 387 19 38600 384 40 38440 38430 384 30 38440 384 40 384 27 384 27. 384 40 38450 38460, 384.70 424 61 ~O3 88' 42458 406.60 424 50 398.50 ! 424.42 4(39 43 42434 406 14 424 33 406 21 42433. 410.15' 424.31 41047' 42430 410.47' 424 30 408 5 424.29 406.51 42430= 40669. 42429 40669 424 31: 404.33 424 30 404,32' 424.27 402.83 42425 40270' 424.22 400 41 424 17 4(:23.75. 42413= 40311 42405 ~04 15 42402 402.87: 423.99 404 48 423 92~ 401 9'2' 423.92 401.93' 42392~ 40276~ 42391 40276 423 90' 402 97' 423.87 433 19 42386 404C36~ 424 67 i 0 000355 424 62 0.00G344 424 57 0 CG:X~2' 42451 ~ 0000087 42443 0030074 424 42 0 000074 42442' 0(.300(364 42440i 00CX3C386' 424.39 0.G:X3386 42436 0000062 424.36 i 0 (XX3062 42435 0003C389 42435, 0C300369 424.35 0 030035. 42434, 0(2X3C35 42432 0(:XX:X335 42430 000CX333 424 27 i 0.(XXX)28 42423 0(330043~ 424t9 0000044 42414~ 0CX:XX360 42409 OQOCX354 424 06 0.000066 424 QG 0 (330070' 424 02 0 00C3075 424 02 0.Q00075. 424 02 0 G30074 424 0! 0.C(~074 423 96 0.(33CX348. 423.94 0 G3CX:)4Q 423.91 0.(330038 42301~ 0CX30044 285 4747063, 257. 3653630 261 335. 22801 71 332 2304597 3 33 23Lr22 95 358: 2287658 341: 22811 2'o' 3 41 22799 48 292 2518831 292! 2517938 270 2371768, 2 '70: 23715.10 2.27 2515501 ' 227. 25150G3 2.20 'T,F~.) 24: 216 2517818 1 97 24734 31 253 2229360 269j 2298981 3.C9 lgG~547: 284! 2(382683 275 2219396 300 182749'2 308i 17C4355 308' 1'703906 314i 17031.58 314 1702031~ 2 77 i 20727 55 255' 2259647 2.52 23255 37 257~ 2262730 316B40 0.0~ 2471 54 0,08 1601 57 0.C8 148241 0.12 145551 0.12 145620 0.11 145516 0.11 1.441170 0.10 144966 0.10 1457 47 0.09 1457 46 0.0~ 145636 146634 1476 47 0.C8 16~6eG 0.07 1523 47 0.07 147569: O.Q8 1,54G26 0.09 1633.73 0.10 1977 68' 0.(:39 20'/8 31 0.09 156451. 0,10 144248 0.11 144246 Gll 146576 0.11 146574 G11 15~(:38, 0.09 14G096 0.06 144887 O~38 145432 0.08 1 I ' "! '! I I ' I '1 '1 1 '! '1 ' I ! ' '1 ! "1 '1 HEC-RAS Plan: 10,50, & 100 Rive: efl Reach: ell Reech,.; ~Rle .'TIC .--'-: Bridge 404.06 0(:X33044 257 2261994. 1454: 0.(38 0._(333333___ 2C9 24098.14 151871 O._OL'~__: 2(39. 2.,=K39286 O.(EX3(~4 1.87 28683.63 1784.1,4 O,nnnm2 2.26 ~.86 1677.56 0.0'7 0.000032 2.21 24G27.45 1714.57 0.07 0.000032 2.21 2(}09.97 1714.5; 0.07 0.Q00C332 2.21 24GQ9.92 17t4.52 0.07 O.G3Q038 2.39 2.4367.Q9 0.08 t ~ I~ ~/~r\- - ~ p~~\" J ~ - ":.,:: ~,.~ Lo- - - ~.;L-. -L 4~ I - "nri - r-.J ,'''' ~ _v - <? _ v: _ , -l - V ~~ IL B n w , _ - " h\iG!~1 ~ ~ n~-I~ I Q, p- -r;~ :! _, j ~ IL c:J- )0] Qu~ r l) ~V L '\ I IC""1t ~~ I r- - ~- """" (.;i ~ ./1';- ") ~ 1 ~. .J d ------ --=' / ~ ::. 0- _ \y t _ .: ~ G ~ - - ~oA - ~ ~ ~ ~F .- ~ ~J4~Jf\. ~ ~\ ~ '"- ~ ;ro mUD ~-::. 16 \\~ ~ ~lIkl ~ 7 _ ,.. ~ ~::'l -=- c@) ~ ' - L 1 L V __ P- . 5trKlODIUII ILnll.l ""-&~Il. ~ L ,-, _" 'C..Ifj :::::JJpa. 2-..:.:;r ~:\'i"\'\ m ~ ~~ ".. ~r;= n ~I ~ c:::::::J L;- .~ ) ~/I/. /. ~_ ;]~~~ V'~ · ~- p ~ ~ H R-A f; 9 ~ / '" ''''''~...~ _ ~ ~ ~'= - '- ~'-'- ~ ?w.: .\0: ~ S3 l' "- ~!J' ~ ~ - f. ~ _;;;- " 1\' ~ --<4'//. , 0'; ; / iO ~""E t:i · - ~/ Z ~ J _ / ~ ~ I" () \-: ~~~ I} i" / 1\ ~~ /~. / /~~~~/, N...~ ~\' I\~ ~ v.;%~ :J "1.0 _ " z V v/, y ~ l1 I ,I " ~ ~ 1\ ) ~ '/ /. , v. /) I. {f . ~/ ~ 1 !3 k IG ~l'l 1< .#-r.r~ ~<: '/~ ,;:y+ii:..., C~A 'I."''':; _, (? ~~~~ 7 'd ~ ~ ~ f\~~ ~ '~~ &- 'IN, 'fl ~~ ~} ~~z:s """" n~ 'r.f. ~ J"y/ ~ \ ~ ' 'li = I 0. !:till; ~ -'-Jllm I o~ /;,:: 1 _ A' 'I \ _ ~ ?::$ '_I;" fLQ / _ b~ 10 ) ~~~.. / _ t'~/~ t" ~ ~. ~~ ) ~~~ m.'.t _ ~l _ .... "7':-0; ~ .1 I I.~ ~ 'l z; 'l _ ('1Jj ;::. 'jg///~ .~ ,JJJ ~rtr-j... L - I ~ ~ ) ) /. if: _ _ _ ~ ' r; ~ Jll//li;:, 4 -0-'1 - N/.1. _ _ .\.<::::: ~~~){ .. --F-I-s~ ~ '1%;;;7;. _~: ' <: ~"'L"') ~ ~I.S 92'!9~1~" ;:; 7~",~ O'r"/~ ~ · ~ .~ ~ . U\' /. IIj l ><L ~./JSll ,I ~ i<- ') 1r:'1 I u- ~ ' A/ 0'/. '//1'/4"/ 1 J , J - ~ W ;.r;'/~~ =~~, ~ ; ~\1; 1\ ~ - .yfi ~ ///I//.4h '" W~~J/// .~. ;; · .I I~, -::::? 11'\ ;'"' ~ W$fi~ //_-;;;;{:; '~;; ~ ' ~~,/< {/l;;.h~ '1 ~ _ ~ ~/.'l'//A , ~_ . ____j1~ \il~c.-._~ ,,_ @~~ ~~ _ _ _, ==- ...... -- - ~ W//0 ;;~'Z/. 4 FLOODPLAIN FILL ~'/. //. '11 Z;lSll f7 ~ ~ ( Pit' PROJECT ~ :I'~ ~// v / /. /'. ~ 0 ~ ~ a NG <liLT Q) _ I /. ///.. /. 'I/.' ,'\ _ \ 1\ EX~~6oDPLAIN '/~: /L. ~(j'-'~ //. ._ ~ ~ 'Q - - ~ Y'/, IN .'- _ . nJ. ~I\~\~ ~~ ~'" - ~ J .,CL ~ ~ _ "II? 1'</7. ~ _ _ m ~ ,. ,. ~ r:J~ >- ,/-" ,\\~ . "llU n - ;;:o-_~ , SCALE 111-400' r f f f f f f f f f r EXISTING CONDITION FLOODWAY MODEL F HEC-2 Water Surface Profiles* * Version 4.6.2; May 1991 * RUN DATE 20JAN99 TINB 16:34:12 * EXISTING CONDITION FLOODWAY MODEL X X y, xyac(xx xx.y..xx x x X x x x x X x xXXXXxX Xxx.x X X x x X x x X x x X X X.YJacva~. x,x.,v/x Existing Condition Floodway Model 20jan99 16:34:12 WATER SURFACE PROFILES Version 4.6.2; May 1991 T2 T3 DUPLICATION OF EFFECTIVE FIS FLOODWAY MODEL 100-YR DISCHARGES - NATURAL PROFILE ELM FORK TRINITY RIVER [EFEISDPF.IH2] 38 I 43 50 42 26 4 93 54 -10 -10 1285 440.7 1810 440 2120 3579 440 4360 446,7 5330 6700 447.9 6990 444,8 7480 9147 439 9342 438 9412 ET 4.1 2900 8619 Xl 90880 45 7720 7990 500 780 880 GR 438 1000 {38 1920 440 2230 440 2640 436.9 2870 20JA~99 16:34:12 EXISTING CONDITION FLOODWAY MODEL BT 4.1 3900 10020 Xl 92090 45 9000 9320 964 1234 1210 GR 452.80 1000 482.40 1100. 444.3 1300 444.20 1400 442.4 1600 GR 441.50 1800 442.50 2100. 437.6 2500 438.9 3475 439.8 4100 GR 440.2 4110 439.9 4210. 435.1 4700 438.9 5100 440.5 5300 GR 440.20 5500 441.4 5600 448 6000 442.3 6080 440.8 6930 GR 441.60 6950 440. ,6968 440 8250 446.5 8400 444 8600 GR 446.90 8700 441.2 8800 442.8 8940 445,2 8970 443 9000 GR 427 9138 412.7 9175 410.6 9190 428 9235 426 9260 ST 4.1 2850 8710 Xl 92300 42 7703 7969 210 210 210 GR 438 1000 438 1580 438.6 2280 441.1 2710 438 3080 NC .07 ,06 .06 BT 4.1 2950 8650 Xl 33620 49 8200 8380 2570 1420 1320. BT 4.1 2950 8650 X1 93670 59 8200 8470. 50 50 ~0. Iee GR 445 1000 445 1080 446 1180 446 1840 441 1830. GR 440 2300 439.5 2700 440.6 2900 439 3010 438.5 3300. 20JJ~N99 16:34:12 EXISTING CONDITION FLOODWAY MODEL PAGE 3 NC .3 .5 BT 4.1 3000 8800 X1 93730 44. 8490 8800 60 60 60. BT X2 9~760 4.1 3000 8800 a0 30 30 2480 5220. 6890 8030 8170 8660 8870 10420 NC .07 .07 .06 ST 4.1 2900 8650 X1 93810 58 8200 8450 S0 50 60 BT 4.1 3100 10700 X1 97570 56 5490 5680 2100 1700 3760 EXISTING CONDITION FLOODWAY MODEL m 16:34:12 BT 4.1 2300 9760 X1 100040 49 4036 4215 760 760 760 m G~ 481 1000 444 1030 441.5 1190 439,7 1200 439.7 1830 RT 4.1 2840 9700 Xl 103060 96 3333. 3533. 1880.0 1776.0 3020.0 PAGB EXISTING CONDITION FLOODWAY MODEL 16:34:12 444.2 7408. {44.8 7823. 448.2 7947. 444.7 7992. 444.3 8019. ST xl 106080 GR 460 GR 447.5 GR 432.5 GR 450 GR 449 GR 445 GR 446 4.1 2580 8630 52 3630. 2850. 1850.0 1775.0 3020.0 PAGE EXISTING CONDITION FLOODWAY MODEL T2 T3 20J/&N99 16:34:12 J1 ICM~CK INQ NINV IDIR STRT METRIC ~VINS Q WSEL 3 443.49 ITRACS PAGE 20JAN99 16:34:12 EXISTING CONDITION FLOODWAY MODEL PAGE 7 Version 4.6.2; May 1991 90Q00.000 443.41 44350.00 .00 409.60 2.26 7382.91 1008.24 10747.96 98000.000 443.49 44360.00 ,08 409.60 3.91 3503.30 6615.33 10690.00 90880.000 443.60 44350.00 .00 414.50 2.08 6232.86 1000.00 8616.01 92090.000 443.91 44350.00 .00 410.60 2.09 7951,15 1432.00 10021.74 92300.000 443.98 44350.00 .00 415.10 1.93 7437.88 1000.00 8709.93 93620.000 444.65 44390.00 .00 414.50 4.73 7348.31 1316.03 10211.71 93670.000 444.82 44390.00 ,00 431.00 3.41 9698.05 1308.21 12585.10 93730.000 444.88 44350.00 .00 414.50 4.61 5236.82 1832.18 8800.00 93730.000 445.56 44390.00 .68 414.50 4.67 4301.87 3000.00 8800.00 93760.000 445.04 44390.00 .00 414.60 4.30 7802.30 1815.97 12836.05 93750.000 445.68 44350.00 .64 414.50 4.36 4325.71 3000.00 8800.00 93810.000 445.22 44350.00 .00 414.50 3.43 10076.32 1000.00 12631.33 97570.000 445.98 44360.00 .00 423.00 2.21 9152.30 820.53 10002.83 975?0.000 446.82 44350.00 .84 423.00 2,33 7600.00 3100.00 10700.00 * 98450.000 446.19 44350.00 .00 426.00 3.26 8302.07 1020.60 10906.85 EXISTING CONDITION FLOODWAY MODEL SECNO 99280.000 99280.000 100040.000 100040.000 * 103060.000 , 103060.000 106080.000 106080.000 16:34:12 CWSBL Q DIFWSP .00 .84 ELMIN VCH TOPWID SSTA BNDST 428.00 2.77 8487.64 1019.12 9891.63 428.00 3.19 6804.38 2690.00 9530.00 .00 428.30 2.84 8536.51 1017.88 9773.12 .88 428.30 2.68 7450.00 2300.00 5750.00 1O0 430.00 4.44 8576.71 1150.70 10139.76 .77 430.00 3.92 6712.46 2840.00 9700.00 .00 420.00 3.19 5543.06 1394.46 9342.03 .31 420.00 3.09 5610.38 2648.59 8630.00 Existing Condition Floodway Model 20JAN99 16:34:12 PAGE 9 Summary of Errors and Special Notes WARNING SECNO= 90880.000 PROFILS~ EXISTING CONDITION FLOODPLAIN MULTIPLE PROFILE EXISTING CONDITION MODEL MULTIPLE PROFILE * HEC-2 WATER SURFACE PROFILES * Version 4.6.2; May 1991 RUN DATE 24APR99 TIME 14:22:34 Existing Condition Model Multiple Profile Version 4.6.2; May 1991 T3 HEC-2 Water Surface Profiles [BFFISDPM.IM2] J1 ICMECK INQ NINV IDIR STRT MBTRIC MVINS Q Duplication of Effective FIS Multiple Model 10-year Discharges Elm Fork Trinity River 2 J2 NPROF IPLOT pRFVS XSBCV XSECM FN kLLDC IBW -10 -10 NC .08 QT 4 24300 37100 44390 60400 STARTING WATER SURPACE ELEVATIONS ESTIMATED PROM FIS PLOOD PROFILES Xl 90880 45 7725 7990 500 780 880 OR 438 1000 438 1920 440 2230 440 2640 436.9 2870 GR 431.8 7970 441.3 7990 440.7 8046 440.7 8050 441.8 8099 X1 90000 40 9412 9733 GR 460 1000 442 1010 440.8 1289 440.7 1810 440 2120 Existing Condition Model Multiple Profile 24APR99 14:22:34 GR 438 8600 445 8620 445 1280S 445 12915 450 13000 4~ 9000 9320 964 1234 1210 1000 452.40 1100. 444.3 1300 444.20 1400 442.4 1600 1800 442.80 2100. 437.6 2500 438.9 347S 439.8 4100 4110 439.9 4210. 435.1 4700 438.5 5100 440.5 ~300 Xl 92090 GR 452.80 GR 441.50 GR 440.2 GR 440.20 GR 441.60 GR 446.90 GR 427 GR 430 GR 429.8 X1 92300 42 7703 7969 210 210 210 GR 438 1000 438 1~80 438.6 2280 441.1 2710 438 3080 NC .07 .06 .06 Xl 93620 49 8200 8380 2570 1420 1320. X1 93670 69 8200 8470. ~0 50 50, GR 445 1000 445 1080 446 1180 446 1240 441 1530. EXISTING CONDITION MODEL MULTIPLE PROFILE PAGE NC .3 X1 93730 44. 8490 8800 60 60 60. BT 2 8490 443.5 439.6 8800 448.5 444.6 GR 490 1000 447 1420 447 1620 443 2020 X1 93760 X2 30 30 30 2480 5220. 5890 8030 8170 8650 8870 10420 X1 98490 49 4038 4215 800 700 880 GR 451 1000 444 1030 441.S 1190 439.7 1200 439.7 1830 X1 97570 56 5490 5680 3100 1700 3760 GR 4~0 600 446 820 444 880 444 1180 442 1420 GR 442 1870 440 2180 440 3800 442 3820 444 4030 NC .07 .07 .06 X1 93810 58 8200 8480 50 50 50 GR 44S 1000 448 1080 446 1180 446 1240 441 1530 GR 440 2300 439.5 2700 440.S 2900 439 3010 438.5 3300 14:22:34 EXISTING CONDITION MODEL MULTIPLE PROFILE GR 441.6 7800 442 8200 443.6 8800 443.8 8900 GR 446.5 9100 447,5 9180 447.3 9235 428.3 9265 GR 446 9328 447.5 9800 446 10400 446.9 10900 GR 448 11100 455 11200 457.5 11300 459.2 11420 9000 9305 11000 X1 103060 96 3333. 3833. 1850.0 1778.0 3020.0 GR 455.8 1000, 481.7 1023. 448.7 1146. 447.7 1154. 446.6 1229, X1 100040 49 4035 4215 760 760 760 GR 451 1000 444 1030 441.5 1190 439.7 1200 439.7 1830 PAG8 X1 99280 49 4035 4218 750 780 830 GR 451 1000 444 1030 441.5 1190 439.7 1200 439.7 1830 24/~PR99 14:22:34 EXISTING CONDITION MODEL MULTIPLE PROFILE Xl 106080 52 2630. 2850. 1850.0 1775.0 3020.0 GR 460 1000 453.5 1160 480 1440 461 1870 4S3 2220 EXISTING CONDITION MODEL MULTIPLE PROFILE T2 T3 24APR99 14:22:34 DUPLICATION OF EFFECTI%~ FIE MULTI-PROFILE 80DSL 50-YR DISCHARGES ELM FORK TRINITY RIVER J1 ICHECK INQ NINV IDIR ETRT METRIC HVINS Q 3 J2 NPROF IPLOT PRFVS XSECV' XSECH FN kLLDC IBW EXISTING CONDITION MODEL MULTIPLE PROFILE 24APR99 14:22:34 IDIR STRT METRIC HVINS 443.41 PAGE Existing Condition Model Multiple Profile IDIR STRT MBTRIC MVINS Existing Condition Model Multiple Profile 24APR98 14:22:34 PAGE HEC-2 WATER SURFACE PROFILEE Version 4.6.2; Eay 1991 90000.000 .00 .00 .00 409.60 24300.00 439.30 .00 439.44 6840.27 90000.000 .00 .00 .00 409.60 37100.00 441.80 .00 441.86 12.62 3.67 11404.23 $.88 2.81 24447.14 3.32 2.26 35733.24 90880.000 880.00 .00 .00 414.50 24300.00 440.01 .00 440.11 8436.10 90880.000 880.00 .00 ,00 414.80 37100.00 442.14 .00 442.19 18244.21 90880.000 880.00 .00 ,00 414.50 44360.00 443.60 .00 443.64 26690.91 90880.000 880.00 .00 .00 414.$0 60400.00 446.01 .00 446.03 6.63 2.75 14743.68 4.14 2.39 27391.50 2.76 2.08 36481.13 1.78 1.82 66006.86 92090.000 1210.00 .00 .00 410.60 24300.00 440.72 .00 440.80 10348.14 92090.000 1210.00 .00 .00 410,60 37100.00 442.60 .00 442.66 17804.15 92090.000 1210.00 .00 .00 410.60 44360.00 443.91 .00 443.98 28663.02 92090.000 1210.00 .00 .00 410.60 60400.00 446.20 .00 446.22 5.51 2.56 15035.36 4.34 2.39 26899.09 2.99 2.09 37021.61 1.75 1.75 61190.09 92300.000 210,00 .00 .00 415.10 24300,00 440.85 .00 440.92 10894.23 92300.000 210.00 .00 .00 415.10 37100.00 442.70 .00 442.74 19832.31 92300.000 210.00 .00 .00 415.10 44350.00 443.98 .00 444.01 28233.98 92300.000 210.00 .00 .00 418.10 60400.00 446.24 .00 446.26 48115.69 4.98 2.37 18273.26 3,50 2.17 31158.26 2.47 1.93 40568,76 1.58 1.68 62247.29 93620.000 1320.00 .00 .00 414.50 24300.00 441.90 .00 442.22 10,91 5,33 9090.01 9.42 8,27 16005.95 7.07 4.73 22800.47 3.69 3.64 42684.94 93670.000 50.00 .00 .00 431.00 24300.00 442.12 .00 442.32 3788.81 93670.000 $0.00 .00 .00 431.00 37100.00 443.82 .00 443.93 8631.77 93670.000 50.00 .00 .00 431,00 44350.00 444.82 .00 444,90 13349.95 93670.000 80.00 .00 .00 431.00 60400.00 446.75 .00 446.78 41.14 5.11 8140.43 18.47 4.05 15722.76 11.04 3.41 25430.74 4.93 2.61 45478.22 27196.46 EXISTING CONDITION MODEL MULTIPLE PROFILE 93730.000 60.00 443.50 444.60 414.60 24300.00 442.24 .00 3300.21 63730.000 60,00 443,60 444.60 414.90 37100.00 443-88 -0O 4708.26 93730.000 60,00 443,50 444.60 414.60 44350.00 444.88 .00 6697.62 93730.000 60.00 443.50 444.60 414,60 60400.00 446.77 .00 14602.01 442.77 444.23 445.08 446.89 62.09 6.31 4617.07 5.94 9052.19 4.61 13469.73 2.70 29733.11 SECNO 14:22:34 ~XISTING CONDITION MODBL MULTIPLB PROFILS PAGE 10 93760.000 30.00 443.90 444.60 414.S0 24300.00 442.49 .00 3423.69 93760.000 30.00 443.90 444.60 414.90 37100.00 444.16 .00 93810.000 50.00 .00 .00 414.50 24300.00 442.99 .00 9572.01 93810.000 50.00 .00 .00 414.90 37100.00 444.49 .00 19637.55 93810.000 S0.00 .00 .00 414.90 44390.00 445.22 .00 20499.79 93810.000 S0.00 .00 .00 414.50 60400.00 446.90 ,00 36076.66 97970.000 3760.00 .00 .00 423.00 24300.00 444.01 .00 16790.19 97570.000 3760.00 .00 .00 433.00 37100,00 445.32 .00 99280.000 830.00 .00 .00 428.00 24300.00 444.66 .00 11570.13 99280.000 830.00 .00 .00 428.00 37100.00 449.91 .00 18433.78 99280,000 830.00 .00 .00 428.00 44390.00 446.~4 .00 22551,95 99280,000 830.00 .00 .00 428.00 60400.00 447.90 .00 33159.57 100040.000 760.00 .00 .00 428.30 24300.00 444.99 .00 12215.08 100040.000 760.00 .00 .00 428.30 37100.00 446.22 .00 100040.000 760.00 .00 ,00 428.30 44350,00 446.83 .00 23330.86 100040.000 760.00 .00 .00 428.30 60400.00 448.15 .00 33906.21 442,99 444.43 445.21 446.91 443.12 444.55 445.29 446.94 444.03 445.35 446.00 447.46 444.31 445.60 446.24 447.66 444,70 446,95 446.57 447.93 445,02 446.24 446.86 448.18 446.66 447.69 448.20 449.28 449.13 450.16 450.62 50.38 52.14 39.85 16.34 6.44 4.70 2.97 2.09 2.06 2.02 1.76 5.91 5.19 4.82 3.87 4.41 4.05 3.87 3.32 3.96 3.74 3.61 3.17 20.67 17.85 16.04 12.49 7.75 9.08 9.70 10.74 103060.000 3020.00 .00 .00 430.00 24300.00 446.53 .00 5.99 ~111.22 5.25 10206,48 4.30 14394.64 2.64 30311,86 3.66 13678.47 3.64 23638.37 3.43 31103.70 2.91 49006.05 2.06 29818.52 2.17 41601.75 2.21 47601.16 2.19 63955.03 3.34 18907.66 3.28 28808.39 3.2~ 34098.73 3.09 47419.78 2.73 22600.43 2.79 32752.93 2.77 37937.84 2,73 50699.86 2.42 23926.13 2.50 33931,84 2.54 39069.74 2,54 ~1874.99 4.68 12626.92 4.55 19933,27 4.44 24275.03 4.13 33961,10 2.72 17426.80 EXISTING CONDITION MODEL MULTIPL~ PROFILE 14:22:34 EXISTING CONDITION MODEL MULTIPLE PROFILE SBCNO Q CWSEL DIFWSP DIFWSX DIFKWS TOPWID XLCM 90000.000 24300.00 439.30 .00 .00 .00 3794.98 .00 90000.000 37100~00 441.80 2.50 .00 .00 6997.43 .00 90000.000 44380.00 443.41 1.61 .00 .00 7382.91 .00 90000.000 60400.00 445.90 2.49 .OO .00 13164.99 .00 90880.000 24300.00 440.01 .00 .71 .00 5662.63 880.00 90880.000 37100.00 442.14 2.12 .34 .00 6149.13 880.00 90880.000 44350.00 443.60 1.47 .19 .0O 6232.86 880.00 90880.000 60400.00 446.01 2.41 .11 .00 10727.07 880.00 92090.000 24300.00 440.72 .00 .71 .00 8311.93 1210.00 92090.000 37100.00 442.60 1.88 .46 .00 7463.43 1210.00 92090.000 44350.00 443.91 1.31 .31 .00 7951.19 1210.00 92090.000 60400.00 446.20 2.29 .19 .00 12681.22 1210.00 92300.000 24300.00 440.89 .00 .13 .00 6454.84 210.00 92300.000 37100.00 442.70 1.85 .10 .00 7291.79 210.00 92300.000 44390.00 443.98 1.28 .07 .00 7437.88 210.00 92300.000 60400.00 446.24 2.26 .04 .00 11381.40 210.00 * 93620.000 24300.00 441.90 .00 1.05 .00 3278.92 1320.00 * 93620.000 37100.00 443.62 1.72 .92 .00 4982.29 1320.00 , 93620.000 44350.00 444.69 1.07 .71 .00 7348.31 1320.00 , 93620.000 60400.00 446.69 2.00 .49 .00 10914.10 1320.00 93670.000 24300.00 442.12 .00 .22 .00 3864.06 50.00 93670.000 37100.00 443.82 1.69 .20 .00 8854.92 80.00 93670.000 44390.00 444.82 1.01 .14 .00 9698.09 50.00 93670.000 80400.00 446.78 1.92 .08 .00 10987.52 90.00 93730.000 24300.00 442.24 .00 .12 .00 2067.72 60.00 * 93730.000 37100.00 443.88 1.64 .06 .00 4077.52 60.00 , 93730.000 44350.00 444.88 1.00 .06 .00 9236.82 60.00 * 93730.000 60400.00 446.77 1.89 .03 .00 10128.99 60.00 93760.000 24300.00 442.49 .00 .25 .00 2282.21 30.00 93760.000 37100.00 444.16 1.68 .28 .00 4420.79 30.00 93760.000 44350.00 448.04 .88 .16 .00 7802.20 30.00 93760.000 60400.00 446.83 1.79 .09 .00 10152.90 30.00 93810.000 24300.00 442.99 .00 .50 .00 5149.56 90.00 93810.000 37100.00 444.46 1.46 .29 .00 9166.98 50.00 93810.000 44350.00 448.22 .77 .18 .00 10076.32 50.00 93810.000 60400.00 446.90 1.68 .07 .00 11007.69 50.00 EXISTING CONDITION MODEL MULTIPLE PROFILE 14:22:34 Q DIFWSP DIFWSX DIPKWS TOPWID XLCH , 97570.000 24300.00 444.01 .00 1.02 .00 8882.0S 3760.00 · 97670.000 37100.00 446.32 1.31 .87 .00 9082.11 3760.00 , 97570.000 443S0.00 44S.98 .66 .76 .00 9182.30 3760.00 97870.000 60400.00 447.44 1.45 .83 .00 11384.12 3760.00 * 98480.000 24300.00 444.24 .0O .23 .00 7426.82 880.00 , 98460.000 37100.00 448.84 1131 .22 .00 8024.05 880-00 99280.000 24300.00 444.66 .00 .42 .00 7963.60 830.00 99280.000 37100.00 445.91 1.26 .37 .00 8207.25 830.00 99280.000 44350.00 446.54 .62 .38 .00 8487.64 830.00 99280.000 60400.00 447.90 1.36 .28 .00 10076.30 830.00 100040.000 24300.00 444.99 .00 .33 .00 8074.81 760.00 100040.000 37100.00 446.22 1.23 .30 .00 8248.01 760.00 100040.000 443~0.00 446.83 .61 .29 .00 8536.51 760.00 100040.000 60400.00 448.15 1.32 .aS .00 10089.87 760.00 * 103060.000 24300.00 446.53 .00 1.54 .00 6986.49 3020.00 * 103060.000 37100.00 447.59 1.06 1.37 .00 8012.32 3020.00 , 103060.000 44350.00 448.11 .52 1.28 .00 8~76.71 3020.00 , 103060.000 60400.00 449.21 1.10 1.06 .00 8062.54 3020.00 · 106080.000 24300.00 449.09 .00 2.56 .00 5672.68 3020.00 · 106080.000 37100.00 450.11 1.02 2.82 .00 5931.05 3020.00 PAGE 24APR99 14:22:34 ~XISTING CONDITION MODEL MULTIPLE PROFILE PAGE 13 W~RNING SECNO~ 93730.000 PROFILED WARNING SECNO~ 93730.000 PROFILED WARNING SECNO= 93810.000 PROFILE= W~ING SECNO= 93810.000 PROFILE= WARNING SECNO~ 103060.000 PRO[ILE= W~,NING SBCNO~ 103060,000 PROFILE= W~RNING SBCNO~ 103060.000 PROFILED EXISTING CONDITION CROSS SECTIONS · '1 I 1 I "1 I ' 1 468 ELM FORK, TRINITY RIVER Cross-Section gO000 .... 1 I "1 ' '1 I 458 - 448 - 438 - 428 - 418 - 408 1000 3000 5000 ...... 8ridge -- Ground Section - -- -CWSEL I 7000 9000 11000 13000 Distance (Ft) ~ AEncroachments A A ET i 15000 468 458 - 448 - 438 428 - 418 - - l "1 } 'l ELM FOn TRINITY RIVER Cnoss-Sectlon 90880 A 408 1000 3000 5000 7000 9000 11000 -- -CWSEL i ...... 8ridge Ground Section Distance (Ft) 13000 A A Encroachments A A ET i 15000 468 .... 1 1 1 ' "! ELN FOk. rRZN[TY RTVER Cr'oss-Sectlon 92090 458 - 428 - 418 - 408 , , 1000 3000 5000 7000 9000 Distance (Ft) 11000 13000 15000 ...... ~ridge - -- -CWSEL 1 ~ ~ Encroachments ~ ~ ET 1 Ground Section } } } 1 ! 1 '1 1 ""] ..... 1 .... 1 1 1 468 ' ' ' ! ...I 1 1 ELM FOK FRINZTY RIVER Cross-Section 9~300 458 - 448 - 438 428 - 418 - 408 ~ ~ 1000 3000 5000 7000 9000 11000 13000 Distance (Ft) 15000 ..... ~ridge - - ~WSEL 1 ~ ~ Encroachments ~ ~ ET 1 Ground Section 1 ' I "1 '1 '1 ' I "'1 .... 1 '1 I I I 468 ELM FOk tRINITY RIVER Cross-Section 93620 458 - 448 -~ ~xx ~ 438 - 428 - 418 - 408 1000 3000 5000 7000 9000 11000 13000 Distance (Ft) 15000 ...... 8ridge -- -CWSEL 1 A A Encroachments ~ A ET 1 Ground Section I '1 '1 ....1 '1 468 ELM FOr [RINITY RIVER Cnoss-Sectlon g3670 458 - 0 448 - .~ 438 - 428 - 418 - 408 ~ ~ ~ ~ ~ , 1000 3000 5000 7000 9000 11000 13000 Distance (Ft) ...... 8cidge - -- -CWSEL I A AEnccoachments A A ET 1 Ground Section 15000 "1 ' '1 I .... 1 I ..... ELM FO~ TRINITY RZVER Cross-Section 93730 ! "1 '1 "' ! ! 458 - 448 _X~/~~x~ "' ' 438 .... "~ . 428 - 418 - 408 , , , , , 1000 3000 5000 7000 9000 11000 Distance (Ft) 13000 15000 ...... ~ridge - -- ~WSEL i A A Encroachments A A ET 1 Ground Section 468 ,_I ' '1 ' "1 1 ELM FOi I'R[NTTY RIVER Cross-Section 93760 I ' '] I .... 1 458 - 438 428 - 418 - 408 , 1000 3000 5000 7000 9000 11000 Distance (Ft) 13000 15000 ...... Bridge - -- -CWSEL 1 ~ ~ Encroachments ~ ~ET 1 Ground Section 468 '! "1 ' '1 ' ' '1 ' ' '1 I ..... 1 "'1 I ' '1 EL~ FOK fR~N~TY R~VER Cross-Sec~on g38J-O 458 - 438 - ; 428 - 418 - 408 ~ ~ ~ , , ~ 1000 3000 5000 7000 gO00 11000 13000 Distance (Ft) ..... ~ridge - -- ~::WSEL 1 ~ ~ Encroachments ~ ~ ET 1 Ground Section 15000 EXISTING CONDITION WATER SURFACE PROFILES | ] | ] 1 ] ' ] ] ELM FORK,, TRINITY RIVER Cross-Sections (gO000 to 106080) 468 EXISTING 458 - 93670 438- 428 - ~ 8~00040 450 418 - 9~~0~'~~ 408 , , , , , 90000 92000 94000 96000 98000 100000 102000 104000 ..... 8ridge - -- -~3WSEL I Channel Length (Ft) .... ~WSEL 2 .... CWSEL 3 ........ CWSEL 4 --Invert FLOODPLAIN AND FLOODWAY DELINEATION ~ ~ r- \l"1 ~~ \' ~-- ~ - ~~\''':ii~ dO II "iLL . .',< .;" liIi 1 V, (f;:, l ~iJ'1 ~i;g~ I ~~ <' [)/ L1Y; I ~i! nIt. ~ ~ ~ ~ I ~.l ~ '~ty~~.~!f ji[ ~ ~!~pL'. ,.., -..It _ r :t; ..:.. 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I I ,,:/... ~ I ~.,\, b V) Lj I,. !" ~! I ~ J ' r-. =-< ~ " ~ ~ ! 'fr) I' I~: 1__ ~ ~ ~ t'" ~ ~ f) r;) ; '~"""- ~ -P I I ~I~ \. : ! I _/l ~ / q I ~ ! ~: ~ I I r I I c::r -=L ~ t I :l I c::J c:::J !~ ~ !~ \ ~ ~ f;J I i i i l ! ie PROPOSED CONDITION FLOODWAY MODEL HEC-2 Water Surface Profiles Version 4.6.1; MaV 1991 PROPOSED CONDITION FLOODWAY MODEL X X X X X X X X X X X X X U.S. Army Corp of Engineers PROPOSED CONDITION FLOODWAY MODEL PAGE i HEC-2 WATER SURFACE PROFILES T2 T3 DUPLICATION OF EFFECTIVE FIS FLOODWAY MODEL 100-YR DISCHARGES - NATUR~ PROFILE E~M FORK TRINITY RIVER [EFPISDPF.IM2] FfVINS Q WSEL FQ 443.41 C/{NIM ITRACE 38 I 43 50 42 26 4 53 54 -10 -10 NC .08 .06 .075 .1 .3 QT 2 44390 44350 ~T 4.1 4950 10690 X1 90000 40 9412 9733 GR 450 1000 442 1010 440.8 GR 440 2670 434 3300 434 GR 438 5835 438 6925 436.1 GR 445 ?950 440.2 8630 448 GR 43~ 3442 434.4 9452 431.4 1285 440.7 1810 440 2120 3975 440 4360 446.7 5330 6780 447.5 6950 444.8 7480 9147 439 9342 438 9412 ET 4.1 2900 8615 X1 90880 45 7725 7990 500 780 880 GR 438 1000 438 1920 440 2230 440 2640 436.9 2870 PROPOSED CONDITION FLOODWAY MODEL BT 4.1 3900 10020 Xl 92090 45 9000 9320 964 1234 1210 GR 482.80 1000 452.40 1100. 444.3 1300 444.20 1400 442.4 1600 GR 441.80 1800 442.80 2100. 437.8 2800 438.9 3478 439.8 4100 GR 440.2 4110 439.9 4210. 438.1 4700 438.9 5100 440.5 5300 GR 440.20 5500 441.4 8600 448 6000 442.3 6080 440.8 6930 GR 441.60 6980 440. 6968 440 8250 446.8 8400 444 8600 GR 446.90 8700 441.2 8800 442.8 8940 445.2 8970 443 9000 GR 427 9135 412.7 9175 410.6 9190 428 9235 426 9260 NC .07 .06 .06 ST 4,1 2980 8680 X1 93620 49 8200 8380 2570 1420 1320. GR 445 1000 448 1080 446 1180 446 1240 441 1830 ET 4.1 2980 8650 Xl 93670 59 8200 8470. 50 50 PROPOSED CONDITION FLOODWAY MODEL PAGE 3 NC .3 rew ET 4.1 3000 X1 93730 44. 8490 8800 BT 2 8490 443.5 439.6 GR 450 1000 447 1420 ~mm GR 441.5 3620 442 3820 93760 4.1 3000 8800 60 60 60. 8800 448.5 444.6 447 1620 443 2020 8800 3O 30 30 442 447 442 437.5 443.8 418 446 445 2480 5220, 5890 8030 8170 8650 8870 10420 ET 4.1 3100 10700 X1 97570 56 5490 5680 2100 1700 3760 GR 450 600 445 820 444 880 444 1150 442 1420 GR 442 1870 440 2180 440 3800 442 3820 444 4030 NC .07 .07 .06 ET 4.1 2900 8650 X1 93810 58 8200 8450 50 50 50 GR 445 1000 445 1080 446 1180 446 1240 441 1530 GR 440 2300 439.5 2700 440.5 2900 439 3010 438.5 3300 PROPOSED CONDITION FLOODWAY MOD~L ET 4.1 1930 9480 ~ Xl 98450 49 4036 4215 800 700 880 r GR 4~1 1000 444 1030 441.5 1190 439.7 1200 439.7 1830 GR 442 1840 440.6 2500 441.2 2928 442.6 3080 443 3180 GR 443 3700 444.S 3880 444.9 4000 445.7 4036 426.9 4090 4.1 2890 9530 BT 4.1 2300 Xl 100040 49 4035 4215 760 760 760 ~ GR 451 1000 444 1030 441.6 1190 439.7 1200 439.7 1830 ST 4.1 2840 9700 Xl 103060 96 3333. 3533. 1860.0 1776.0 3020.0 PROPOSED CONDITION FLOODWAY MODEL GR 444.2 7408. 444.8 7823. 445.2 7947. 444.7 7992. 444.3 8019. GR 444.6 8089. 445.4 8173. 446.5 8381. 446.6 8527. 446.6 8564. GR 447.4 8770. 447.4 88~9. 437.9 8848. 438.1 8887. 446.9 8906. GR 447.8 8964. 447.8 9089. 445.0 9182. 446.4 9223. 447.1 9285. GR 447.8 9315. 439.8 9326. 433.2 9367. 439.7 9398. 440.9 9439. GR 444.9 9460. 447.6 9490. 447.4 9648. 447.3 9655, 446.6 9912. GR 447.8 10034. 448.0 10132. 449.4 10229. 463.6 10326. 455.5 10423. Xl 106080 GR 460 GR 447.$ GR 432.S GR 450 GR 449 GR 448 GR 446 4,1 2580 8630 52 2630. 2850. 1880.0 1775.0 3020.0 PAGE PROPOSED CONDITION F~OODWAY MOD8L T3 PROPOSED CONDITION FLOODWAY MODEL PAGE 7 HEC-2 WATER SURFACE PROFILES Version 4.6.2; May 1991 SECNO 99280.000 99280.000 100040.000 100040.000 * 103060.000 · 103060.000 106080.000 106080.000 CWSEL Q DIFWSP BLMIN PAGE 8 PROPOSED CONDITION [LOODWAY MODEL WARNING SECNO= 90880.000 PROFILB- WARNING S~CNO~ 93620.000 PROFILE= PROPOSED CONDITION MULTIPLE PROFILE MODEL Proposed Condition Multiple Profile HEC-2 WATER SURFACE PROFILES Version 4.6.2~ 8aV 1991 U.S. Army Corp of Engineers HEC-2 WATER SURFACE PROFILES Version 4.6.2; May 1991 T2 T3 -10 -10 QT 4 24300 37100 44350 60400 X1 90000 40 9412 9733 GR 480 1000 442 1010 440.8 1285 440.7 1810 440 2120 GR 440 3670 434 3300 434 3875 440 4360 446.7 8330 GR 438 5835 438 6925 436,1 6780 447.8 6990 444.8 7480 X1 90880 45 7729 7990 800 780 880 GR 438 1000 438 1920 440 2230 440 2640 436.9 2870 14:22:34 GR 438 8600 446 8620 445 12805 445 12918 Xl 92090 GR 452.80 GR 441.60 GR 440.2 GR 440.20 GR 441.60 GR 446.90 GR 427 GR 430 GR 429.8 450 13000 X1 93670 69 8200 8470. 80 50 80. GR 445 1000 445 1080 446 1180 446 1240 441 1530. GR 440 2300 439.5 2700 440.5 2900 439 3010 438.5 3300. Xl 93620 49 8200 8380 2570 1420 1320. Xl 92300 42 7703 7969 210 210 210 GR 438 1000 438 1580 438.6 2280 441.1 2710 438 3080 45 9000 9320 964 1234 1230 1000 452.40 1100. 444.3 1300 444.20 1400 442.4 1600 1800 442.60 2100. 437.6 2500 638.9 3478 439.8 4100 14:22:34 NC .3 X1 93730 44. 8490 8800 60 60 60. BT 2 8490 443.8 439.6 8800 448.8 444.6 GR 450 1000 447 1420 447 1620 443 2020 X2 93760 30 30 30 442 447 442 437.S 443.5 418 446 445 2480 8220. 6890 9030 8170 8650 88?0 10420 X1 98450 49 4035 4219 800 700 880 GR 451 1000 444 1030 441.5 1190 439.7 1200 439.7 1830 GR 442 1840 440.8 2500 441.2 2929 442.5 3080 443 3180 Xl 97570 56 5490 5680 2100 1700 3780 GR 4~0 600 446 820 444 880 444 1150 442 1420 NC .07 .07 .06 X1 93810 58 8200 8450 80 50 80 GR 445 1000 445 1080 446 1180 446 1240 441 1530 GR 440 2300 439.5 2700 440.5 2900 439 3010 438.9 3300 GR 443 3720 446.5 3810 449.5 4200 449.S 4520 446.5 4710 FROPOSED CONDITION MULTIPLB PROFILS GR 441.6 7800 442 8200 443.6 8800 443.S 8900 446.S 9000 GR 446.S 9100 447.~ 9185 447.3 9235 428.3 9265 428.5 9300 GR 446 9325 447.5 9800 446 10400 446.9 10900 446,5 11000 GR 448 11100 455 11200 457.5 11300 459.2 11420 Xl 99280 48 4035 4215 750 750 830 GR 451 1000 444 1030 441.~ 1190 439.7 1200 439.7 1830 X1 100040 49 4035 4215 760 760 760 GR 481 1000 444 1030 441.S 1190 439.7 1200 439.7 1830 X1 1030~0 96 3333. 3S33. 1880.0 177~.0 3020.0 GR 455.S 1000. 451.7 1023. 448.7 1146. 447.7 1154. 446.6 1229. T2 T3 J1 ICHECK INQ NINV IDIR STRT METRIC ~INS Q 3 J2 NPROF IPLOT PRFVS XSBCV' XSBCM FN ALLDC IBW PAGE 24APR99 14:22:34 T2 T3 ICHECK J2 NPROF 3 PAGE PROPOSED CONDITION MULTIPLE PROFILE 24APR99 14:22:34 WSEL 44S.9 CHNIM FQ ITRACE PAGE PAGE MEt-2 WATER 6URFACE pROFILRS version 4.6.2; May 1991 90000.000 .00 .00 .00 409.60 24300.00 439.30 .00 439.44 12.62 3.67 11404.23 6840.27 90000.000 .00 .00 .00 408.68 37100.00 441,80 .00 441.86 5.85 2.81 24447.14 16340.65 90000.000 .00 .00 .00 409.60 44360.00 443.41 .00 443.44 3.32 2.26 35723.24 24347.16 90000.000 .00 .00 .00 409.60 60400.00 446.90 .00 445.92 1.84 1.86 59747.54 44628.46 90880.000 880.00 .00 .00 414.60 24300.00 440.01 .00 440.11 6.63 2.75 14743.68 9436.10 90880.000 880.00 .00 .00 414.60 37100.00 442.14 .00 442.15 4.14 2.39 27391.60 92090.000 1210.00 .00 .00 410.60 24300.00 440.73 .00 440.80 5.61 2.56 16035.36 10348.14 92090.000 1210.00 .00 .00 410.60 37100.00 442.60 .00 442,66 4.34 2.39 26899.09 17804.16 92090.000 1210.00 .00 .00 410.60 44360.00 443.91 .00 443.96 2.99 2.09 37021.61 92300,000 210.00 .00 .00 415,10 24300.00 440.85 .00 440.92 4.98 10894.23 92300.000 210.00 .00 .00 415.10 37100.00 442,70 .00 442.74 3.50 19833.31 92300.000 210.00 .00 .00 419.10 44350.00 443,98 .00 444,01 2.47 28232.98 92300.000 210.00 .O0 .00 416,10 60400.00 446,24 .00 446.26 1.68 48115.69 * 93620.000 1320.00 .00 .00 414.60 24300.00 441,90 .00 442.22 10.91 7367,96 93630.000 1330.00 .00 .00 414.S0 37100.00 443,62 .00 443.85 9,42 12087.92 93620.000 1320.00 .00 .00 414.60 44350,00 444,69 .00 444.84 7.07 16681.18 93620.000 1320.00 .00 .00 414.60 60400.00 446.69 .00 446.76 3.69 93670.000 50.00 ,00 .00 431.00 24300.00 442.12 .00 442.32 3788.51 93670.000 50.OO .00 .00 431.00 37100.00 443.82 .00 443,93 8631.77 93670.000 50.00 .0O .00 431.00 44350.00 444,82 .00 444.90 18.47 4.93 2.37 18273.26 2.17 3115~.26 1.93 40568.76 1,68 62247.29 5.33 9090.01 5.27 16005,95 4.73 22800.47 3.64 42684.54 27196.46 PROPOSBD CONDITION MULTIPLE PROFILB 93730.000 60.00 443.50 444.60 414.~0 34300.00 442-24 -00 3300.21 * 93730.000 60.00 443.S0 444.60 414.~0 37100.00 443.88 .00 4708.=6 442.77 $4.22 6.31 4617.07 444.23 62.09 S.94 9052.19 465.08 46.19 4.61 13469.73 446,89 17.11 2.70 29733.11 24A~R99 93760.000 3423.69 93760.000 8137.85 93760.000 7025.86 93760.000 14:22:34 XLCH 30.00 30,00 30.00 30.00 50.00 50.00 50.00 E0.00 443.E0 443.E0 443.90 443.50 .00 .00 .00 .00 PROPOSBD CONDITION MULTIPLH PROFILB ELLC ELMIN Q CWSEL CRIWS EG 444.60 414.80 24300.00 442.49 .00 442.95 444.60 414.50 37100.00 444.16 .00 444.43 444?60 414.50 44350.00 448.04 .00 445.21 444.60 414.90 60400.00 446.83 .00 446.91 .00 414.50 24300.00 442.99 .00 443.12 PAGE 10 10*Fa VCH AREA 80.38 5.99 5111.22 52.14 5.3E 10206.48 39.8E 4.30 14394.64 16.34 2.64 30311.86 6.44 3,66 13678,47 E.63 3.64 23638.37 4.70 3.43 31103.70 97570.000 3760.00 .00 .00 433.00 34300.00 444.01 .00 444.03 2.09 16790.19 97E70.000 3760.00 .00 .00 423.00 37100.00 445.32 .O0 445.35 2.06 98450.000 880.00 .00 ,00 426.00 24300.00 444.24 .00 444,31 8.91 9993.12 984E0.000 880,00 .00 .00 426.00 37100.00 448,E4 .00 44E.60 5.19 1628E.66 984E0.000 880.00 ,00 .00 426.00 443E0.00 446.19 .00 446.24 4.82 20204.83 98450.000 880.00 .00 .00 436.00 60400.00 447.61 .00 447.66 3.87 30710.44 99280.000 830.00 .00 .00 428.00 24300.00 444.66 .00 444.70 4.41 11570.13 99280,000 830.00 .00 .00 428.00 37100.00 445.91 .00 448,8E 4.05 18433.78 99280.000 830.00 .00 .00 428.00 44350.00 446.E4 .00 446.57 3.87 100040.000 760.00 .00 .00 428.30 24300.00 444.99 .00 44E.02 3.96 100040.000 760.00 .00 .00 428.30 37100.00 446.22 .00 446.24 3.74 19189.99 100040.000 760.00 .00 .00 428.30 44350.00 446.83 .00 446.86 3.61 33330.86 100040.000 760.00 .00 .00 428.30 60400.00 448.15 .00 448.18 3.17 33906.21 103060.000 3020.00 .00 .00 430.00 24300.00 446.53 .00 446.66 20.67 5344,77 103060.000 3020.00 ,00 .00 430.00 37100.00 447.59 .00 447.69 17.89 * 106080.000 3020.00 .00 .00 430.00 24300.00 449.08 .00 449.13 7.78 8726.28 * 106080.000 3020.00 .00 .00 420.00 37100.00 4E0.11 .00 480.16 9.08 12315.18 106080.000 3020,00 .00 .00 420.00 44350.00 480.57 .00 450.62 9.70 14237.99 106080.000 3020.00 .00 .00 420.00 60400.00 451.45 .00 451.52 10.74 2.06 29818.52 2.17 41601.75 2.21 47601.16 2.19 63955.03 3.34 18507.66 3.28 28808.39 3.25 34058.73 3.09 47419.78 2.73 22600.43 2.75 32752.93 2.77 37837.84 2.73 50699.86 2.42 23926.13 2.80 33931.84 2.54 39065.74 2.54 51874.99 4,68 12636.92 4.55 19933.27 4,44 24275,03 4.13 33961.10 2.73 17426.80 3.04 23292.89 3.19 26212.53 3.45 32405.79 18432.17 ELM FORK TRINITY RIVER 90000.000 24300.00 439.30 .00 .00 .00 3794.98 .00 90000.000 37100.00 441.80 2.50 .00 .00 6597.43 .00 90000.000 44350.00 443.41 1.61 .00 .00 7382.61 .00 90000.000 60400.00 445.90 2.49 .00 -00 13164.99 .00 90880.000 24300.00 440.01 .00 .71 .00 5662.63 880.00 90880.000 37100.00 442.14 2.12 .34 .00 6149.13 880.00 90880.000 44350.00 443.60 1.47 .19 .00 6232.86 880.00 90880.000 60400.00 446.01 2.41 .11 .00 10727.07 880.00 92090,000 24300.00 440.72 ,00 .71 .00 5311.93 1210.00 92090.000 37100.00 442.60 1.88 .46 .00 7463.43 1210.00 92090.000 44350.00 443.91 1.31 .31 .00 7951.15 1210.00 92090.000 60400.00 446.20 2.29 .19 .00 12681.22 1210.00 92300.000 24300.00 440.86 .00 .13 .00 6454.84 210.00 92300.000 37100.00 442.70 1.85 .10 .00 7291.79 210.00 92300.000 44350.00 443.98 1.28 .07 .00 7437.88 210.00 92300.000 60400.00 446.24 2.26 .04 .00 11381.40 210.00 93620.000 24300.00 441.90 .00 1.05 .00 3278.92 1320.00 · 93620.000 37100.00 443.62 1.72 .92 ,00 4982.29 1320.00 · 93620.000 44350.00 444,69 1.07 .71 .00 7348.31 1320.00 93620.000 60400.00 446.69 2.00 .45 .00 10914.10 1320.00 93670.000 24300.00 442.12 .00 .22 .00 3564,06 60.00 93670.000 37100.00 443.82 1.69 .20 .00 6854.92 60.00 93670.000 44350.00 444.82 1.01 .14 .00 9698.06 60.00 93670.000 60400.00 446.75 1.92 .05 .00 10957.92 50.00 93730.000 24300.00 442.24 .00 .12 .00 2067.72 60.00 93730.000 37100.00 443.88 1.64 .06 .00 4077.52 60.00 93730.000 44350.00 444.88 1.00 .06 .0O 5236.82 60.00 93730.000 60400,00 446.77 1.89 .03 .00 10125.95 60.00 93760.000 24300.00 442.49 .00 .25 .00 2282.21 30.00 93760.000 37100.00 444.16 1.68 .28 .00 4420.79 30.00 93760.000 44350.00 445.04 .88 ,16 .00 7802.20 30.00 93760.000 60400.00 446.83 1.79 .05 .00 10162.90 30.00 * 93810.000 24300.00 442.99 .00 .50 .00 5149.56 50.00 * 93810.000 37100.00 444.45 1.46 .29 .00 9166.58 50.00 * 93810.000 44350.00 446.22 .77 .18 .00 10076.32 50.00 * 93810.000 60400.00 446.90 1.68 .07 .00 11007.69 50.00 PAGE 11 PROPOSED CONDITION MULTIPLE PROFIL~ 24/~PR99 SECNO 14:22:34 CWSEL DIFWSP DIFWSX DIFKWS TOPWID XLCM , 97570.000 24300.00 444.01 .00 1.02 .00 8882.05 3760.00 , 97570.000 37100.00 445.32 1.31 .87 .00 9082.11 3760.00 · 97570.000 44380.00 448.98 .66 .76 .00 9182.30 3760.00 97570.000 60400.00 447.44 1.45 .53 .00 11384.12 3760.00 * 98450.000 24300.00 444.24 .00 .23 .00 7426.82 880.00 · 984S0.000 37100.00 445.84 1.31 .22 .00 8034.06 880.00 * 98450.000 44350.00 446.19 .68 .21 .00 8302.07 880.00 , 98480.000 50400.00 447.61 1.43 .18 .00 10060.41 880.00 99280.000 24300.00 444.66 .00 .42 .00 7963.60 830.00 99280.000 37100.00 445.91 1.2~ .37 .00 8207.25 830.00 100040.000 24300.00 444.99 .00 .33 .00 8074.81 760.00 100040.000 37100.00 446.22 1.23 .30 .00 8248.01 760.00 100040.000 443S0.00 446.83 .61 .29 .00 8~36.81 760.00 100040.000 60400.00 448.15 1.32 .2~ .00 10089.87 780.00 · 103060.000 24300.00 446.53 .00 1.54 .00 ~956.49 3020.00 · 103060.000 37100.00 447.59 1.06 1.37 .00 8012.32 3020.00 · 103060.000 44350.00 448.11 .83 1.28 .00 8576.71 3020.00 · 103060.000 60400.00 449.11 1.10 1.06 .00 9062.84 3020.00 · 106080.000 24300.00 449.09 .00 2.56 .00 5672.68 3020.00 ~ 106080.000 37100.00 480.11 1.02 2.52 .00 S931.05 3030.00 PAGE 34~.PR99 14:22:34 PROPOSED CONDITION MULTIPLE PROFILM PAGE 13 WARNING SBCNO= 93670.000 PROFILE~ WJ~P, NING S~CNO~ 93730.000 PROFILE= WARNING SECNO= 93730.000 PROFILB= WARNING 8ECNO~ 93730.000 PROFILB= WARNING SECNO~ 97570.000 PROFIL~m WideNING SBCNO~ 97S70.000 PROFILB= W/~ING SBCNO~ 97S70.000 pROFILEs WA~ING SECNOs 103060.000 PROPILB= WAP, NING SECNOs 103060.000 PROFILBm WARNING SBCNO~ 103060.000 PROFILe= W~NING SECNOs 103060.000 PROFIL=~ PROPOSED CONDITION CROSS SECTIONS | I 468 I '1 ' I ..... ! ELM FO .... TRINITY RIVER Cross-Section 90000 '1 I '1 I 458 - 448 - 438 - 428 - 418 - 408 ~ ~ 1000 3000 5000 ..... Bridge ~round Section - -- ~SWSEL i 7000 gO00 Distance (Ft) 11000 13000 15000 A A Encroachments A A ET I '1 468 '1 ' 1 "l I ! 1 ELN FL TRINITY RIVER Cross-Section g0880 · I 458 - · · 448 - · / 438 //~/~ · A 428 - 418 - 408 , ~ , ~ 1000 3000 5000 7000 gO00 ..Bridge Ground Section - - 4SWSEL 1 Distance (Ft) lioOo 13000 15000 A A Encroachments A A ET 1 I I I I ' I '1 ' '1 I I I I ' ' I I '1 ' I 468 ELM FON., TRINITY RIVER Cross-Section 92090 458 - 448 ~Z 438 - 428 - 418 - 408 ~ ~ . ~ 1000 3000 SO00 7000 gO00 ...... 8ridge Ground Section - -- ~WSEL i Distance (Ft) 11000 13000 15000 A A Encroachments A A ET 1 ! I 468 ! '1 I '1 ELN FC,. TRI'NITY RIVER Cross-Section 92300 458 - E O bJ 448 - 438 ~ 428 - 418 - 408 ; , ; ; 1000 3000 5000 7000 gO00 Distance (Ft) 11000 13000 15000 ..... 8ridge - - ~WSEL i A A Encroachments A ~ ET 1 Ground Section ! 468 ! 1 ELM FL , TRINITY RIVER Cross-Section 93620 - 1 ! ' 1 ' '1 458 - 428 - 418 - 408 1000 3000 ...... 8ridge Ground Section 5000 7000 gO00 1 ] gO0 13000 - - ~WSEL 1 Dlstance (Ft) A A Encroachments A A ET J 15000 ) ' ' i ] .... ELM FO TRINITY RIVER Cross-Section g3670 468 '1 I I '1 458 ~ 448 ..... LL C o 438 ...... bJ 428 - 418 - 408 , , ~ , , , 1000 3000 5000 7000 gO00 11000 13000 Distance (Ft) ..... ~ridge - -- ~WSEL I ~ ~Encroachments ~ ~ET 1 Ground Section 15000 468 1 I 1 1 } ' ] ] ELM FO,,.. TRINITY RIVER Cross-Section 93730 ! I I I ) I 1 458 - 428 - 418 - 408 1000 3000 , , , 5000 7000 gO00 11o0o 3000 Distance (Ft) 15000 ...... Bridge - - ~WSEL I A A Encroachments ~ ~ ET 1 Ground Section 1 I '1 ' '1 I '1 .... 1 ' 1 468 ELM FOi\. TRINITY RIVER Cross-Section 93760 458 - 438 428 - 418 - 408 , ~ , ~ , 1000 3000 5000 7000 gO00 11000 Distance (Ft) J3000 ISO00 ...... 8ridge -- -CWSEL i A A Encroachments ~ ~ ET 1 Ground Section ! I "1 1 '~1 1 I 1 468 .... 1 1 '] ] ELM FO. TRINITY RIVER Cross-Section 93810 458 - 448 ~~ 438 - 428 - 418 - 408 , , 1000 3000 5000 - -- ~WSEL 1 7000 gO00 11000 13000 Distance (Ft) A A Encroachments ~ ~ ET 1 15000 PROPOSED CONDITION WATER SURFACE PROFILES .... 1 1 '1 ' '1 ' '1 1 1 . _I 1 1 1 1 ELN FORK TRINTTY RIVER Cross-Sections (gO000 to 106080) PROPOSED 468 '1 1 458 - -__._ _ ........ ........ 438 - ~. · 428 - 936?0 . . ~ 040 ~ 8450 4~8 - ~ 408 , , , , , , gO000 92000 94000 96000 98000 100000 102000 104000 Channel Length (Ft) ..... Bridge - -- ~WSEL 1 .... ~WSEL 2 .... CWSEL 3 ........ CWSEL 4 --~nvert ~L ': \ ' '=:::: ====-=--=::;'- ---:.c-::::~ F1l<WAY JAD Jt; I;.' ' ", :R en n m CD .. - w Ii ~ o o o m >< Cir .::t.'i1 :2- caO o 'i10c. mO." :2 - ~ c.!. >:+:1 s: g. :!! D)'" = -00." iiJ "'ll ~~. 0'" < CD "'ll rs o m S' .. ~ - CD CD . . . ;W~In!il-::, )J CARROLL TON DAM ~ lr-~ ZONE"X ~~ .... "Q)C)3 .... )a. tn. ~30 oCio.O~ ~Q:::t . ~""=:: ~ ~ Q. ..... a "11~O ~ :;-CQ ~CQ-< ~8'rn ~~c8 ~ ~ .... ~e~ t'",CI) ....~CD ~~~. Cl>>gcS ...... 05'" !> ~ ~.~ Ii ~ 0 WI ~ f ~ F i ~ :> ." :!3: r-> -"" :n~ -< lDi/i lD~ ..o.!=? ..., '" 31: 31: c: :z: ::; -< .,.-'a .,,> ~~ ........ O:z: o c: ~lI: cO> '" "''"' O....'l/.")n ~t'1"lO- '" Q ... ~><..,,::j ~ =:;;;~ en>""''=' ....Q"o- >tnt=1.."..., c::r"'" ~ .F ..... %:1: o en ~ Z ~ ::J 0' > g >< ~ 8 ~ ~ ~ ffl ~ .." 1:!!<WAY )AD =J -71 II ,l ='c";"':9: '~Q ~~:'~ ...'~ R ; shown ~ri rtially or lof lis index shtl'i ~ -~ s a ti ';, ~: ; :" :j ;;: ~t!! "II!; "f.lt.l' l /. I: I ~ __....t..... -.' ,l.~-:- .-- .~:'lji ---11-- r~~rO--~l ,~ i~~ i . .., ~,I , it "== .',':; .;;1 I ~\; r '~'Jr . t ." I ':;Ji! t~l ' ,; :iit!; ';Y".I I 'l:Nl "'l~r -;~ ~.l i ",'fI; .,. [~} t .j';~f .;. ;;_ :~.J ~ :~ ~~1! I, '..,; ~ fA n m ii' .. - Ii ..Jo o o o o iiJ:lJ::!:! ~ ~ 0 ~.g 0 0% ~=i;' ~Q.5' [R~:n a=::'=== :b~~ i: o'~' ~:'a 5' S' .. ..Jo - CD CD . - . . . . . :".~tJ"a,l"''''''~''''''''''' . . . . . . . . .\~"3!~~1-'A. "1' ~. -ll;t\f'~~.!J;1..1 . CARROLL TON DAM --= ::::::::::--.-- 1;---- .II ZONE'X ~~ Ci)Qs ~ :ta Cb' .:::!30 .fl.o::S 0)5: ~:ba: a ~ to.)~Q. ~. ~ :tao ~~CS" )( 5' co ~(Q,,< ~orn .:::!~:, CQ to.);t -. ~)(:, ~~= ~",,=:3 co g~' ~.. <:::1_ ::s ~ ~ ~ ~ti! I:! ~ !i 'i c-inn ~~~:i t:;>"'::lO "'~." > ~ E!i s- o '" :3 o :z ..., o c:: ~ ffi ~c~..,. ;::II:J=O- ....=-=,., ~ ~- z ~ 1::7 !: .... :z: >< ~ ,.. >- -4 ... :I: ,.. -0 C"> co ;J: ;J: c Z :::; .... ..."" co" oZ -'" ....... o:z oc ~s 0'" ... ...- '" I ;: ~ [ j ~ '" '" '" ~ ~ - '" .. '" '" .. . :c> "'C =:3:: ...> -" ~~ -< (Diii ",'" A!;' 4. ENCROACHMENT INFORMATION - 1. Does the State have jurisdiction over the f100dway or its adoption by communities participating in the NFIP? o Yes ~ No . Yes, attach a copy of a letter notifying the appropriate State agency of the floodway revision and documentation of the approval of the revised floodway by the appropriate State agency. 2. Does the development in the f100dway cause the 1 % annual chance (base) elevation to increase at any location by more than 0.000 feet? 0 Yes ~ No 0 N/A 3. Does the cumulative effect of all development that has occurred since the effective SFHA was originally identified cause the base flood elevation to increase at any location by more than one foot (or other increase limit if community or state has adopted more stringent criteria - even if a floodway has not been delineated by FEMA)? 0 Yes 181 No If the answer to either items is Yes, please attach documentation that all requirements of Section 65.12 of the NFIP regulations have been met, regarding evaluation of alternatives, notice to individual legal property owners, concurrence of CEO, and certification that no insurable structures are impacted. 5. MAINTENANCE RESPONSIBILITY The community is willing to assume responsibility for 0 performing 181 overseeing compliance with the maintenance and operation plans of the DEVELOPER (Name) flood control structure. If not performed promptly by an owner other than the community, the community will provide the necessary services without cost to the Federal government. Operation and maintenance plans are attached. o Yes ~ No 6. REVIEW FEE ON/A The review fee for the appropriate request category has been included. ~ Yes Fee amount: $3.100.00 OR This request is based on a federally sponsored flood-control project where 50 percent or more of the project's cost is federally sponsored, or the request is based on detailed hydrologic and hydraulic studies conducted by Federal, State, or local agencies to replace approximate studies conducted by FEMA and shown on the effective FIRM; thus the project is fee exempt. o Ves Please see Instructions for Fee Amounts 7 . SIGNATURE Signature of Revision Requester RONALD W. MORRISON. P.E. SENIOR HYDROLOGIST Printed Name and Title of Revision Requester MORRISON HYDROLOGYIENGINEERING. INC. Company Name Tel Signature RONALD W. MORRISON. P.E. Printed Name and Title of Revision Requester Registr No. 36651 Expires (Date) 3/31/2000 State TX Type of Ucens&'Expertise: HYDRAULICS AND HYDROLOGY Note: Signature indicates that the community understands, from the revision requester, the' pacts of the revision on flooding conditions in th~munity. Printeq,.Name and Title of Community Official Kc..,. \:S1~ I J:):,N ~? e . () b i);Q.-CcJQt.o+ E""'1i,,'Ct-.l"':> + 'f"oJ lic.~o""> eommunlty N~ _ C4 t~ 0+ \X)(JI-e 1 \ Tel hone No.: Date: 4- Check which forms have been included with this request Form Name and (Number) o Hydrologic (3) 181 Hydraulic (4) 181 Mapping (5) o Channelization (6) o Bridge/Culvert (7) o LeveelFloodwall (8) o Coastal (9) o Coastal Structures (10) o Dam (11) o Alluvial Fan (12) Reauired if ...... new or revised discharges new or revised water-surface elevations floodplain/floodway changes channel is modified addition/revision of bridge/culvert addition/revision of leveeIf10adwall new or revised coastal elevations addition/revision of coastal structure addition/revision c:J dam structures proposed on alluvial fan FEMA Form 81-89 Revision Requester and Community Official Form MT -2 Form 1 Page 2 of 2 I FEDERAL EMERGENCY MANAGEMENT AGENCY I O.M.B No. 3067-0148 ,,, REVISION REQUESTER AND COMMUNITY OFFICIAL Expires April 30, 2001 _Public reporting burden for this form is estimated to average 2,13 hours per response. The burden estimate includes the 'me for reviewing instructions, searching existing data seumes, gathering and maintaining the needed data, and ,, completing and reviewing the form. Send comments mcjarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, Federal Emergency Management Agency, 500 C Street, S.W., Washington DC 20472; and to the Office of Management and Budget, Paperwork Reduction Project (3067- 0148), Washington, DC 20503. You am not required to respond to this collection Of information unless a valid OMB Control Number IS dISplayed In the upper right comer Of this form, 1. REQUESTED RESPONSE FROM FEMA This request is for a: CLOMR A letter from FEMA commenting on whether a proposed project, if built as proposed, would justify a map revision, or proposed hydrology changes (See 44 CFR Ch. 1, Parts 60,65 & 72). LOMR A letter from FEMA officially revising the current NFIP map to show the changes to floodplains, floodway or flood elevations. LOMRs typically decrease flood hazards. (See 44 CFR Ch. 1 Parts 60 & 65.) Other Describe: 2. OVERVIEW 1. The basis for this revision request is (are): (check all that apply) [] Physical Change [] Improved Methodology/Data {~ Other Describe: FILL IN THE INEFFECTIVE FLOW AREA - Note: A photograph is not required, but is vay helpful during review. [] Floodway Revision 2. Flooding Source: ELM FORK OF THE TRINITY RIVER 3. Project Name/Identifier: 10 ACRE AND 48 ACRE TRACT OF SANDY LAKE ROAD 4. FEMA zone designations affected: ZONE AE (example: A, AH, AO, A1-A30, A99, AE, V, V1-V30, VE, B, C, D, X) 5. The NFIP map panel(s) affected for all impacted communities is (are): Community No. Communit, j Name State Map No. EJc 480301 Katy, City TX 480~01 480287 Harris County TX 48201C 480170 DALLAS COUNTY TX 480170 Pele4 No. 0005D 0220G Effective Dale 02/08/83 09r28/90 04/15/94 6. The area of revision encompasses the following types of flooding and structures. Check all that apply. TVDes of Floodina Structures [] Rivefine [] Channelization [] Coastal [] Levee/Floodwall [] Alluvial fan [] Bridge/Culvert [] Shallow Flooding (e.g. Zones AO and AH) [] Dam [] Lakes [] Fill [] Other (describe) [] Other (describe) PLEASE REFER TO THE INSTRUCTIONS FOR THE APPROPRIATE MAILING ADDRESS FEMA Form 81-89 Revision Requester and Community Official Forn MT-2 F~rm I Page I of 2 FEDERAL EMERGENCY MANAGEMENT AGENCY I O.M,B No. 3067-0148 RIVERINE HYDRAULIC ANALYSIS Expires April 30, 2001 PUBLIC BURDEN DISCLOSURE NOTICE Public reporting burden for this form is estimated to average 2.25 hours per response. The burden estimate includes the time for -~/iewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing and reviewing a form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: information Collections Management, Federal Emergency Management Agency, 500 C Street, S.W., Washington DC 20472; and to the Office of Management and Budget, Paperwork Reduction Project (3067-0148), Washington, DC 20503. You are not required to respond to this collection of information unless a valid OMB Control Number is displayed In the upper dght comer of this form. Note: Fill out one form for each flooding source studied Community Name: COPPELL. TEXAS Flooding Source: ELM FORK OF THE TRINITY RIVER Project NameJIdentifler: 10 ACRE AND 48 ACRE TRACT SOUTH OF SANDY LAKE ROAD I. REACH TO BE REVISED ' Describe the limits of the revision OR submit a copy of the FIRM with the revision ares clearly highlighted. Copy of FIRM(s) attached depicting area of the revision (highlighted, or Circled)? [] Yes .. Downstream Limit: 90880 '1 Upstresm Limit: 93620 2. MODELS SUBMITTED Re~lulraments: for areas which have detailed flooding: Full input and output listings along with files on diskette for each of the models listed below (items 1-4) and a summary of the source of input parameters used in the models must be provided. The summary must include a description of any changes made from model to model (e.g., Duplicate Effective model to Corrected Effective model), At a minimum, the Duplicate Effective (item I) and the Revised or Post-Project Conditions (item 4) models must be submitted. Ses instructions for 'directions on when other models may be required. .; for areas Which do not have detailed flooding: Only the 100-year (Base) flood profile is required. A hydraulic model is not required for aress which do not have detailed flooding; however, BFEs may not be added to the revised FIRM. If a hydraulic model is developed for the ares, items 3 and 4 described below must be submitted. If hydraulic models am not developed, hydraulic analyses (including all calculations) for existing or pre-proJect conditions and ravlsed or post-project condlUons must be submitted. '1. Duplicate EffecUve Model b<3 Natural File Name EFFISEXM IX] Floodway File Name EFFtSEXF Copies of the hydraulic analysis used in the effective FIS, referred to as the effective models (10-, 50-, 100-, and 500-year multi- proffie runs and the floodway run) must be obtained and then reproduced on the redueater's equipment to produce the Duplicate Effective model. This is required to assure that the effective models input data has besn transferred COrrectly to the requestm's equipment and to assura that the revised data will be integrated into the effective data to provide a continuous FIS model upstresm and downstresm of the revised reach. 2. Corrected Effective Model [] Natural File Name [] Floodway File Name The Corrected Effective model is the model that corrects any errors that occur in the Duplicate Effective model, adds any additional cross sections to the DupliCate Effective model, or incorporates more detailed topographic information than that used in the CUrrently effective model. The Correctly Effective model must not reflect any man*made physical changes since the date of the effective model. An error could be a techniCal error in the modeling procedures, or any construction in the floodplain that occurred pdor to the date of the effective model but was not inCOrporated into the effective model. 3. Existing or Pre-Proiect CondlUons Model [] Natural File Name EFFISDPM [] Floodway File Name EFFISDPF The Duplicate Effective model or Corrective Effective model is modified to produce the Existing or Pre-Project Conditions model to reflect any modifiCations that have occurred within the floodplain since the date of the Effective model but pdor to the construction of the project for which the revision is being requested. If no modificaflon has occurred sinCa the date of the effective model, then this model would be identical to the Corrected Effective model or Duplicate Effective model. 4. Revised or Post-Project Conditions Model [] Natural File Name __ [] Floodway File Name The Existing or Pre-Project Conditions model (or Duplicate Effective model or Corrected Effective model, as appropriate) is revised to reflect revised or post-project conditions. This model must incorporate any physical changes to the floodplain since the effective model was produced as well as the effects of the project. When the request is for the proposed project this model must reflect proposed conditions. 5. Other - Please attach a shest describing all other models submitted along With the file names. [] Natural [] Floodway PLEASE REFER TO THE INSTRUCTIONS FOR THE APPROPRIATE MAILING ADDRESS how they were determined. 3. STARTING WATER~URFACE ELEVATIONS Explanation Attached? [] Yes [] No If the effective study is an approximate study, the slope/area method is recommended. For detailed analysis studies, using a known water-surface elevation is recommended. 4. RESULTS (from the model used to revise the 100-year water surface elevations) If the results indicate any of the following, attach an explanation - to this form, or to the hydraulic model printout- as to the reasonableness of the situation. "' [] Supercritical depth [] Critical Depth [] Drawdowns [] Negative Floodway Surcharges [] Floodway Surcharges Greater Than Maximum Allowed by Community/State ,_ [] Water surface elevations higher than the end points of cross sections. [] Floodway discharge is different than the Natural 100-year (base) flood discharge, [] Project causes 100-year floodplain or floodway elevations to increase (state if increases are located off the " reduester's property) Explanation attached with Form [] ExplanaUon provided on attached printout [] If Hydraulic model used is HEC-2, has it been checked with FEMA'S CHECK-2 computer program? (sea Instructions for information on how to obtain CHECK-2) 5. REVISED FIRM/FBFM AND FLOOD PROFILES 1. Profile Transition [] Yes [] No a. 100-Year Water-Surface Elevations - indicate the difference in water surface elevations where the project 100-year elevations tie into the existing 100-year water surface elevations at each end of the project. Downstream End 92300 within _0 (feet) Upstream End ~)3670 within 0 (feet) Cross-Section # Cross-Section # b. Floodway Elevations - indicate the difference in water surface elevations where the project floodway elevations tie into the existing floodway water surface elevations at each end of the project. Downstream End 92300 within _0 (feet) Upstream End 93670 within 0 (feet) Cross-Section # Cross-Section # c. Floodway widths - indicate the difference in floodway widths where the project floodway widths tie into the existing width at each end of the project. Downstream End 92300 within 0_ (feet) Upstream End 93670 within 0 (feet) Cross-Section # Cross-Section # Profile Checklist (check box If Information has been provided on profile) The following information (unless in parentheses) must be included at the same scale as the existing profiles for this project: [] Stream Name [] Community Name [] Contiuences labeled [] Channd Stationing [] HoriZontalNertical Scales indicated [] Road Crossings [] Labeled [] Corporate Limits labeled (~ Streambed profiled [] 100-yearelevsprofiled* [] Low Chord Elevations [] Study limits labeled [] Cross Sections labeled [] Top of Road Elevations *All recurrence intervals in the effective study must also be profiled. Floodway Data Table Attach a Floodway Data Table for each cross section listed in the published Floodway Data table in the FIS report. ' I Floodway Data Table Attached [] Yea [] Not Required FEMA Form 81-89C floodway ~ne Hydraulic Analysis Fon-n MT-2Form4Page2d2 FEDERAL EMERGENCY MANAGEMENT AGENCY I O.M.B No. 3067-0148 RIVERINE I COASTAL MAPPING Expires Apdl 30, 2001 PUBLIC BURDEN DISCLOSURE NOTICE ublic reporting burden for this form is estimated to average 1.5 hours per response. The burden estimate includes the urne for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing and reviewing the form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, Federal Emergency Management Agency, 500 C Street, S.W., Washington DC 20472; and to the Office of Management and Budget, Paperwork Reduction Project (3067- 0148), Washington, DC 20503. You are not required to respond to thia collection Of information unless a valid OMB Control Number is displayed in the upper fidget corner Of thb form. Note: Fill out one form for each flooding source studied Community Name: COPPELL, TEXAS Flooding Source: ELM FORK OF TRINITY RIVER Project Name/Identifier: 10 ACRES AND 48 ACRES SOUTH OF SANDY LAKE ROAD This is a [] Manual r'-I Digital submission. Digital map submissions may be used to update digital FIRMS (DRRMS). For updating DFIRMs, these submissions must be Coordinated with FEMA Headquarters as far in advance as possibis. 1. MAPPING CHANGES 1. A topographic workmap must be submitted showing the following information (check N/A when not applicable): a. Revised approximate 100-year floodplain boundaries (Zone A) ............................................................[] Yes [] No I~ N/A b. Revised detailed 100- and 500-year floodplain boundaries .................................................................[] Yes [] No [] N/A c. Revised floodway boundaries ..............................................................................................................[] Yes[] No[] N/A d. Location and alignment of all cross sections with stationing Control indicated ..................................... [] Yes [] No [] N/A e. Stream alignments, road alignments and dam alignments ..................................................................[] Yes [] No [] N/A ,f. Current Community boundaries ..........................................................................................................[] Yes[] No[] N/A 3- Effective 100- year floodplain and floodway boundaries from FIRM/FBFM reduced or enlarged to the scale of the topographic workmap ...............................................................................[]Yes ["lNo []N/A h. Tie-ins between the effective and revised 100-, 500-year and floodway boundaries .............................. [] Yes [] No [] N/A i. The requester's property boundaries and community easements ......................................................... [] Yes [] No [] N/A j. The signed cartiflcation of a registered professional engineer ..............................................................[] Yes [] No [] N/A k. Location and description Of reference marks .......................................................................................[] Yes[] No [] N/A I. Vertical datum (example: NGVD, NAVD) ...........................................................................................:[] Yes[] No [] N/A m, Coastal zone designations tie into adjacent areas not being revised ....................................................[] Yes [] No [] N/A n. Location and alignment of all Coastal transacts used to revise the Coastal analyze .............................. [] Yes [] No [] N/A o, V-zone has been delineated to extend landward to the heel of the primary frontal dune ........................ [] Yes [] No [~ N/A If any Items are marked No or NIA please attach an explanaUon. 2. What is the sourca and date of the updated topographic information (example: orthophoto maps, July 1985; filed survey, May 1979, beech profile, June 1987 etc.)? CITY TOPOGRAPHIC MAPS AND SURVEY INFORMATION 3. What is the scale and contour interval of the following workmaps? Effective FIS Scale 1"=1000' Contour Interval 10--' Revision Request Scale I"=300' Contour Interval 2..:' NOTE: Revised topographic information must be of equal or greater detail than effective. 4. Attach an annotated FIRM/FBFM at the scale of the effective FIRM/FBFM showing the revised 100- and 500-year~oodplain and the floodway boundaries and how they tie into those shown on the effective FIRM/FBFM downstream and upstream of the revisions or adjacent to the area of revision for Coastal studies, FIRM/FBFM attached? [] Yes [] No PLEASE REFER TO THE INSTRUCTIONS FOR THE APPROPRIATE MAILING ADDRESS FEMAFa'rn81-89D Rtvetffie/Coest~MappingForm MT-2Form5Pagelof2 2. EARTH FILL PLACEMENT The fill is: [] E.~isting [] Proposed Has fill been/will be placed in the regulatory floodway? If Yes. please attach completed Riverine Hydraulic Analysis Form (Form 4). Has fill been/will be placed in floodway fringe (area between the floodway and lO0-year ~oodplain boundaries)? If Yes, then complete A. B, C, and D below. a. [] Yes [] No [] Yea [] No Are fill slopes for granular materials steeper than one vertical on one-and-one-half horizontal? [] Yes [] No If Yes, justif'/steeper slopes Is adequate erosion protection provided for fill slopes e3q3osed to moving flood waters? (Slopes exposed to flows with velocities of up to 5 feet per second (fps) du~ng the lO0-yearflood must, at a minimum, be protected by a cover of grass, vines, weeds, or similar vegetation; slopes exposed to flows wiffi velocities greater than 5 fps duffng the lO0-year flood must, at a minimum, be protected by stone or rock riprap.) [] Yes [] No If No, describe erosion protection provided Has all fill placed in revised 100-yeer floodplain been compacted to 95 percent of the maximum density obtainable with the Standard Proctor Test Method or acceptable equivalent method? [] Yea [] No Can structures conceivably be constructed on the fill at any time in the future? [] Yes [] No If Yes, attach certi~caUon of fill compaction (Itsm 3c. above) by the community's NFIP permit official, a registered professional engineer, or an accredited soils engineer In accordance with Subparagraph 65.5(a)(6) of ~e NFIP regulaUons. Fill certi~cadon attached Has fill been/will be placed in a V zone? [] yea [] No [] Yea [] No If Yes, is the fill protected fi'om erosion by a flood control structure such as a revetment or seawall? [] Yes [] No If Yea, attach the Coastal Structures Form (Form 10). FEMA Fon'n 81-89D Riveri~e/Coastal Mapping Form MT-2 Form 5 Page 2 o~ 2 CDC Information General The project area consisting of two tracts, one 10-acre tract adjacent to McAfihur Road and south of Sandy Lake Road, ~e other tract is a 48-acro triangular site. Both of theso tracts are shown on the drawing in the appendix. The project consists of fill in the floodplain with compensaling excavation · at results in no increase in flood levels and no decrease in flood storage. Hydrologic and Hydraulic Information The two tracts are affected by the flood elevations from the Elm Fork of the Trinity River. However, these elevations ave blocked from the actual flow of the river. The area is in an ineffective flow regime and thus has no impact on flood elevations as long as storage levels are not reduced. This means that filling the tracts has no impact on the flood elevations. Storage Determinations It is important to offset any log storage created by ~iing the tract. This is accomplished by excavating a portion of the TP&L easement on the 48-acre tract. This area is shown on the drawing in the appendix. In order to cletermine the storage on the propony before and after the proposed project a computer model was created by describing cross sections through the area. The results of this analysis are included in the appendix. The project site is in an area that receives ~oochvaters from the Ell Fork of the Trinity River, but is isolated from the actual flow of the flver. Because of this the area can be filled without impact ~ the flood elevations of the river. This report has identified storage mitigation so that there is no net decrease in flood storage. CDC Forms All required forms in support of a CDC approval are included in the appendix. r' Z .< Standard CDC Form Instructions September 1998 This application should be colnpleted according to the guidelines set forth in the 2nd Edition the CDC Manual. 1'o initiate the Corridor Development Certificate (CDC) permit process, the developec should first contact the local government (City) for a pre-permit conference. The CDC/Floodplain Adtninistrator of that local government determines whether the project lies within or partially within the Regutatory Zone. If the project lies completely outside the Regulatory Zone, the CDC/Floodplain Administrator is not required to take any further action beyond making this determination; no forms are required to be submitted and the CDC process ends at this point. If the project lies within or partially within the Regulatory Zone and there is a possibility that a CDC permit might be granted. the CDC Process must be followed. The Applicant should fill out Pans 1 and 2 of the Standard CDC Form and submit it to the CDC Floodplain Administrator unless the Applicant is seeking an exe~nption, in which case the Applicant must only complete Part 1. If the CDC/Floodplain Administrator decides at any time to deny a CDC permit, the CDC Process can be terminated. Lnfonnation provided by the Applicant herein will be used by the City/County to evaluate this Trinity River Corridor Development Certificate (CDC). This application is public information and will be used by other relevant floodplain regulatory authorities, i.e., U.S. Army Corps of Engineers (USACE), Federal Emergency Management Agency (FEMA), and the Texas Natural Resource Conservation Cormnission (TNRCC). These and other regulatory agencies may requite additional information. If an Intent to Process (1TP) is granted, the Standard Form shall be distributed to the following agencies: · USACE; · FEiMA; · TNRCC; · the North Central Texas Council of Governments (NCTCOG); · the cities of Arlington, Carrollton, Coppell, Dallas, Farmers Branch, Fort Worth, Grand Prairie, Irving, and Lewisville; the counties of Dallas, Denton and Tarrzmt; · the Tagant Regional Water District; and the Trinity River Authority. Appendix F lists addresses for the entities to which the 1TP tnust be sent. If additional space is needed to complete this application, please attach a sepalate she:el appropriately. Hydrologic and Hydraulic Data Design discharges for the 100-year and Standard Project Flood storm events shall be based on urbanization consistent with a "Future Conditions with CDC" Scenario or on supplemental data provided by the USACE, whichever discharge is lm-ger. (See Table 1 in Appendix B.) The Applicant should identify these design discharges, including source and date, in the "100 Year Flood Event" and "SPF Flood Event" tables in Part 2 #3. Hydraulic calculations shall be continued for a distance great enough upstream and downstream of the project to verify that water surface elevations are not raised by the proposed hydraulic modifications (spaces are provided in the "100 Year Flood Event" and "SPF Flood Event" tables in Part 2 #3 to list water surface elevations for a number of points upstream and downstream). Elevation data should be computed considering full cross-section widths across the river or creek. Storage data for pre-project and with-project conditions (Part 2 #3) shall be developed within the project borders alone and considering full cross-section widths across the river or creek. Storage change is to be considered "on-site" (i.e., within upstre,'un and downstream limits of the discharge reach.) Compensating valley storage for a proposed activity can also be provided at another site if the USACE recognizes and approves the "off-site" valley storage. In addition, if any valley storage is lost elsewhere due to the project, storage change shall be addressed on a jT,~il cross-section width basis, with change based on the original "on-site" storage. Standard CDC Form Instructions September 1998 This application should be completed according to the guidelines set forth ~n the 2nd Edition the CDC Manual. To initiate the Corridor Development Certificate (CDC) permit process, the developer should first contact the local government (City) for a pre-permit conference. The CDC/Ftoodplain Administrator of that local government determines whether the project dies within or partially within the Regulatory Zone. If the project lies completely outside the Regulatory Zone, the CDC/Floodplain Administrator is not required to take any further action beyond making this determination; no forms are required to be submitted and the CDC process ends at this point. If the project lies within or partially within the Regulatory Zone and there is a possibility that a CDC permit might be granted, the CDC Process must be followed. The Applicant should fill Parts 1 and 2 of the Standard CDC Form and submit it to the CDC Floodplain Administrator unless the Applicant is seeking an exemption, in which case the Applicant must only complete Part 1. fithe CDC/Floodplain Administrator decides at any time to deny a CDC permit, the CDC Process can be terminated. Information provided by the Applicant herein will be used by the City/County to evaluate this Trinity River Corridor Development Certificate (CDC). This application is public information and will be used by other relevant floodplain regulatory authorities, i.e., U.S, Army Corps of Engineers (USACE), Federal Emergency Management Agency (FEMA), and the Texas Natural Resource Conservation Comrmssion (TNRCC). These and other regulatory agencies may require additional information. If an Intent to Process (ITP) is granted, the Standard Form shall be distributed to the following agencies: · USACE; · FEMA; · TNRCC; · the North Central Texas Council of Governments (NCTCOG); · the cities of Arlington, Carrollton, Coppell, Dallas, Farmers Branch. Fort Worth, Grand Prairie, Irving, and Lewisville; · the counties of Dallas, Denton and Tarrant; · the Tarrant Regional Water District; and the Trinity River Authority. Appendix F lists addresses for the entities to which the ITP must be sent. If additional space is needed to complete this application, please attach a separate sheet labeled appropriately, Hvdrologic and Hydraulic Data Design discharges for the lO0-year and Standard Project Flood storm events shall be based on urbanization consistent with a "Future Conditions with CDC" Scenario or on supplemental data provided by the USACE, whichever discharge is larger. (See Table 1 in Appendix B.) The Applicant should identify these design discharges, including source and date, in the "100 Year Flood Event" and "SPF Flood Event" tables in Part 2 #3. Hydraulic calculations shall be continued for a distance great enough upstream and downstream of the project to verify that water surface elevations are not raised by the proposed hydraulic modifications (spaces are provided in the "100 Year Flood Event" and "SPF Flood Event" tables in Part 2 #3 to list water surface elevations for a number of points upstream and downstream). Elevation data should be computed considering full cross-section widths across the river or creek. Storage data for pre-project and with-project conditions (Pan 2 #3) shall be developed within the project borders alone and considering full cross-section widths across the river or creek. Storage change is to be considered "on-site" (i.e., within upstremn and downstream limits of the discharge reach.) Compensating valley storage for a proposed activity can also be provided at another site if the USACE recognizes and approves the "off-site" va/ley storage. In addition, if any valley storage is lost elsewhere due to the project, storage change shall be addressed on a cross-section width basis, with change based on the original "on-site" storage. QO-- I 443,9 Frs Frs 9209 ( FLOODPLAIN FIll PROJECT PROPOSED FLOODPLAIN FLOODPLAIN Sco.le: l' 50 / ~ CDC Tracking Code: (To be supplied by CDCdFtoodplain Administratol ) STANDARD CDC FORM - PART 1 (To be filled out by Applicant or Applicant's Representative and submitted to the appropriate local CDC/Floodplaia Adminisu-ator. If an ITP is granted, the CDC/Floodplain Administrator will send Part I along with Part 2/unless an exemption is granted), the ITP form, and the Preliminary Technical Review (if requested) to the parties designated on the ITP form.) Applicant's Representative. concerning data provided by the Applicant. Name: RONALD W. MORRISON.,, P.E., Relationship to Applicant: E N O I N E E R Address: 210 ARNOLD P~VEI'IUE ARLINGTON, TEXAS Telephone/faxYe-mail: ( g 17 ) 4 5 1 - 0 5 2 1 / ( 8 17 ) Identify person knowledgeable of and authorized to respond to questions C.F.M. 75010 2-7q'ig38/RONMOR7777gAOL.COM CDCApplicant: LOU LIEBOWITZ City/County: COPPELL, BALLAS Co. Property Owner: 10 ~C T~CT SANDY/MAC ~t~eer: ~nq/ll D ~,] VORR[SON, q~C ~ ' Project Name: TRACT ST. JUDE, ~dctSize(to~lacr~): APPROX. 58 AC S~NDY LAKE/MC/~RTHUR DEVELOPmEnT Upper T~ni~ ~ver Fe~ibili~ S~dy Mapping Grid ~: MAPSCO and ~cation Reference: P A G E ~ g -W P.E. 3. Location. Provide general description of location. including street address, nearest cross-su-;et, and identified impacted water bodies: SEE ATTACHED DRAWING 4. Site plan. (a) Please attach a location map (81/2 x l l). Plansattached: ayes ~No (SEE FOLLOWING (b) Please attach a general site plan (81/2 x l l). Plansattached: EYes ~]No FLOODPI_AIN 5. Proposed Activity: (check appropriate categories) D R A W I 5I G ) [] dredge/channel modification 0 swale construction Ct fill [] levee t'l other (attach explanation ) 6. Proposed Use: (check appropriate categories) [] private single dwelling(s) g] private multi-dwelling(s) [] industrial [] other (attach explanation.) [] public [] commercial 7. Applicant requests an exemption or variance to contmon permit criteria. [] Yes [] No [ Please attach supporting material I Application is hereby made for a Corridor Development Certificate (CDC). I certify that I am familiar wi~h' the information contained in this application, and that to the best of my knowledge and belief, this information is true, complete, and accurate. RO~'A,_D W. MORRISON, P.E., C.F.M. ]l?l/lqqq__ Signature of CDC Applicant or Applicant's Representative / Typed Name / Title Date CDC Tracking Code: (To be supplied by CDC/Ftoodplajn Adrnioistrator) STANDARD CDC FORM - PART 2 Detailed Hydrologic/Hydraulic Information (To be filled out by Applicant or Applicant's Representative and sub~nitted to the appropriate local CDC/Floodplain Administrator. The CDC/Floodplain Administrator will send will send Part 2 along with Part I, the ITP form, and the Preliminary Technical Review (if requested) to the parties designated on the ITP form.) General. CDC Applicants are requested to provide the following detailed hydrologic and hydraulic information for all proposed projects within the CDC Regulatory Zone of the Trinity River Corridor. This form and the data provided by the CDC Applicant herein are required to supplement Part i of the Application Form. However, in certain cases the City/County may release the CDC Applicant from completing all or portions of this form if the proposed project satisfies specific provisions. The CDC Applicant is encouraged to schedule a pre-application meeting with the City/County if there are any questions regarding the requirements of the City/County. This application is considered public information and will be distzibuted to affected Federal, State, and local governmental agencies. Please be as complete and concise as possible. Incomplete information can cause delays in the CDC process. Site Plan. (FLOODPLAIN RECLAMATION ONI_Y) Please attach a detailed site plan . Plansattached: IX/Yes [-]No (SEE TEXT) (NO PLANS) 'The scale of project plans shall provide adequate detail of the whole project as well as individual features of the project. The plans should show the yocation of the FEMA Regulardry Floodway and the layout of cross-sections used in the hydraulic model. Proposed changes to the Floodway should be clearly shown. Operation and Maintenance. The operation and maintenance of flood water conveyance systems, conveyance alterations. storm water conlxol structures, equipment and appurtenances, and water quality conu'ol measures will become the obligation of: (check one) [] City [] County [] Owner Gother(specify): To gg COORIITNATFD WITH CITY The annualized cost, including replacement costs, of operating and maintaining post-project storm water control systems, conveyance alterations, and water quality control measures is estimated to be in current year dollars: ($/yr) Legal provision for community monitoring and backup maintenance attached? D Yes (Required if maintenance is to be accomplished by an agent other than the permitting entity) STANDARD CDC FORM PART 2 - CONTINUED Hydrologic/Hydraulic Information. Please provide the following data to characterize the hydrologic and hydraulic impacts of the proposed project: --- 100 YEAR FLOOD EVENT --- Discharges: Channel Velocities: C/S 92500 Water Surface Elevation (NGVD): Hydrologic / Hydraulic Impact Upstream Boundary: Downstream Boundary: Source of discharge data: Date of discharge data: Uli,~egam'~E~o~d~ry: Downstream Boundary: Upstream Boundary, c/s 95620 Mid-project: Downstream Boundary (DB): !__~ ft. upstream of UB: '~/L~ ft. upstream of UB: 12~ ft. upstream of UB: 3~ ,~' upstream of UB: 3_~ ~fi. downstream of DB: 2~,-9 ~t. downstream of DB: 2-14 (T' downstream of DB: 50 l! ~. downstream of DB: :0 AC TRACT ~g L~F TRacT Pre-Project Post-Project Change ~5000 ors. N/A 55000 cfs. N/A N/A CITY STORM',,/ATFR FqASTFR pT AN JA~UAR/199~ " 71 fps. q.71 fps. fps. 2.15 ~s. 2. ] 5 fps. 0 ~s. ft. ~. ~,~ - cn 1~45 f ~b .o~, .60 ~ 9~ ~. ~b~ 9 ft. ~. q4~.g2 ft, q,'4a.82~, 0 4q5.78 ft. qq5.78~. O ft. qqS.g9 ft. r~ R9a- ft. 445.02 ~' 4~.07ft' D 446.7g a- qqfi. Tgft' N fi- 4q4.2~ ~- 4q4.28ft- 0 qq3.q9 n. 4/43.49~. O ft, 4q~.fi7 ~- 4q~ N7~' a a41.80 ft. 4~1.8~~' fi 5.5 7 ~' ~. ~c. iq.q 0 13.45 ac-~. ac-fi.7.88 ac-ft. 58.67 46.55 20.38 fNCREASE C/S 92500 c/s 93750 C/S 93760 C/s 95810 c/S 97370 c/s 90820 c/s 9D000 c/s 89050 c/s 88150 Pr~ect Lands in FInodp|ni~ ~alley ~tora~e o~ Project Lands: The CDC application shall include plots and electronic data files from the current hydraulic model (HEC-RAS, obtained from the USACE) of cross-sections for pre-project and with-project conditions. Water surface profiles for 100-year flood and Standard Project Hood for pre-project and with-project conditions should also De included. The number and location of sections should adequately describe and support documented computations. Cross section plots attached? [] Yes ~ No Cross section electronic data files included? [] Yes ~ No Water surface profiles attached? [] Yes ~ No Standard CDC Form Part 2- Continued Hydrologic / Hydraulic Impact Discharges: Channel Velocities: C/S 92500 Water Surface Elevation (NGVD): c/s 9258Q c/s 93750 c/s 93760 c/s 9~810 c/s 97570 c/s 90880 c/s 90000 c/s 89850 cfs Pr~ect Lan~ in Floodplain: VMley Storage on Pr~ect Lan~: STANDARD CDC FORNI PART 2 - CONTINUED --- SPF FLOOD EVENT Hydrologlc / Hydraulic Impact Pre-Project Post-Project Change Upstream Boundary: ] 0 0 0 O 0 cfs. N/A NtA Downstream Boundary: i 0 0 O 0 0 cfs. N/A N/A Sourceofdischargedata: CITY 8T~qRMWATFR MbSTER P~ AN Date ofdischarge data:JANUARY 199i 3.2 ps, 2 5 O Downstream Boundary: 2 . 13 fps. 2 . I 5 fps. 0 , fps. Upstream Boundary (UB): ft. ft. ft. c/s 95620 /-!50.49 t450.49 9 Mid-project: t_t 50.29 ft. 450.29 ft. '3 ft. Downstream Boundary (DB): 450 . 09 ft. 430 · 09 ft. 0 ft. !4.~fi. upstream of UB: a50.34 ft. ft. 0 ft. t/lO~'upstream°fUB: q50.55 ft. fi' O ft. ]:~,_E3 ft. upstream of UB: Q 5 O · 59 ft. ft. 0 ft. 5'g4~'upstream°rUB: 450.9q ft. ft. 0 l~_40. downstreamofDB: 4L~9.81 ft. ft. O ft- ,2?ff9B'd°wnsu'eam°fDB: 449.50 ft. ft. 0 ft. 7_Zk2~0-d°wnitream°fDB: 4q9.34 ft. ft. '3 ft. .zrg4. B'd°wnstream°fDB: /448.7t ft. fi' 0 ft. ]O AC TRACT S ac. 8 ac. 8 ac. "RAC TRACT OR L'R 42 .~lac-ft ac-fi.25 78 ac-ft, 22l.~ 246.~9 · 11..55 INCREASE The CDC application shall include plots and electronic data files from the current hydraulic model t, HEC-RAS. obtained from the USACE) of cross-sections for pre-project and with-project conditions. Water surface profiles for 100-year flood and Standard Project Hood for pre-project and with-project conditions should also be included. The number and location of sections should adequately describe and support documented computations. Cross section plots attached? [] Yes ID No Cross section electronic data files included? [] Yes R] No Water surface profiles attached? [] Yes El No STANDARD CDC FORM PART 2 - CONTINUED 4. Flood Storage/Hydraulic Mitigation. Please identify all flood storage and other hydrologic/hydraulic mitigation areas on the site plan, and describe them in the space below: STORAGE MITIGATION CONSISTS OF EXC~V~,TION IN THE TP g L EASEMENT AS SHOWN ATTACHED. THIS STORAGE AREA MAINTAINS ~ BOTTOM ELEVATION OF 440' WITH 4;] SIDE SLOPES TO FILL AREA AND NATURAL GRADE. PONDS COULD BE CONSTRUCTED WITHIN THE AREA~ BUT THEY WOULD NOT CONT?IBUTE TO STORAGE MITIGATION. 5. HabitatFvVetland Mitigation. If a Section 404 permit is required, please identify all habitat and/or land resource area used for environmental nUtigation purposes on rite site plan, and describe them in the space below: THE TP&L EASEMENT WILL BECOME A WETI_AND AREA WHEN THE P~OJECT ~S COMPLETE. THERE ARE NO OTHER WBTL/~ND AREAS ON SITE. THIS MODIFICATION IS ~EING COORDINATED WITH THE CORPS OF E:vSINEERS. Land Cover Information. Please provide the following data, in total acres, to characterize the impacts on current land cover which will result from construction of the proposed project: --- LAND COVER I~FOR/MATION --- Land Use / Land Cover Classification ** Pro-Project (Total Acres) 100 urban/built up 200 agricultural/pasture 300 rangeland/shrub &: brush 5 8 A C 400 forest/woodlands 500 water (identify, on site plan) 600 wetland (identify on site plan) 700 barren land/mines & quarries Post-Project (Total Acres) 4~.5~ 'PgL EASE=J3.45 AC *" Note: Listed land cover types are "Ltvel 1" categories (1~0 through 700) defined in accordance with the land u.~e and land cover classification of the U.S. Geological Survey, U.S. Department of the Interior. This data may be required by the U S Army Cor~s of Engineers and other regularDry. agenctes. To the best of my knowledge, the information in Part 2 is complete and accurate: Signature of CDC Applicant or Applicant's RepresentativefFyped Name Ffitle Date ~~... va..Q /', \ UUI \\~ i1TI\1mliTllTIL-mm\ Lt p_ ~ ~ - ) '2"" Pi'm GG.1JlllW""I'" \IlllJ - '-- _ V i :>~ ~"1~ ~ - ~~=: r>.~~~ ~ _~- > ~ ~ 0- _ \.>It, _ ~ (7r ~ - -;:::::J - ~(). r\ \_ _ _ WgO .~ ,\l ~ · _- ~ rf _ ~~~ ~~ 1(llJlfo ~ '< 'M"'- J./ J U~ ;:::"___~ ~OO[@\.I"'~. ~ _ _~ / ~~ ~ J ""lnnr.:.~~~ IG' v- <:r'J!l... _ -, ,'>"" .~ LJ'S r T R-A S 9 ])h _ 051 If "-\ ~-~~'\\.-C ~\l~ 7 L' 411:2. ~y - '/ ;Z' - -~ ;.? 'I <<\.. \ _ '" '.n j. - ? r.-:;; , · "" \ I" ''\ I It 'fl. ~" r~ 0, I ~i) ~ V I J'J _ . ", 1,O!'D ,\[ I!O ) ) ( ,,~ - '~~'/ l\' ( ~ Al ~'.I.;1 ~ _ ... ,~ ~ "" I ~, _""" \ _ """ l~ _ _ ". I ) ~ '''' 7 I - \ II. I _ _ ~ ~g~ Qt. ) ( \ \ I( . - rt - - . j f:;{1f {JJ~ j I r<...L _ ~ ' ~ _ ~ ~ ~ ?F1s~' b -', j - , ~ '( ,( Q r/lT:2rs 92~ ~ ) b OJ ff. ~." "", --?70. - \C.iJ II ~. iitI7} '$JfJJAo/ I ~ A. ~ "U: -:t'r-. :::I U 11-2" ~ 'l' ~ ~.......::" ~ - ) )/V/.: "'., '/~ ~~ -~ -'3 _ ~ ,-/ ~ 'J v/': , ~/ .J.. ~ .~ ~~ ~L. '~,ci'- r---. - _ J\~ ~~ ' ., I V" ~ 17 'I" y __~ P > :rJ<', _ _ ~,... ~ ~ ___0 - ;..:.e -- 1: I ~ < 1 _ - ~[j;-L:'iN;ILL - - - ~ ~ 0\- \~~ PROJECT '\, - r;;s"'") ~ \J \~ - f( PROPOSED FLOODPLAIN 1(1 (- At"... _ ~ . ~ ~ \ ~ FLOODPLAIN ~) - 41.)-J , 6 2 _ ~ -'I}_~ 2 l' 1\CY... n ) ~ 1 <:::::J./:t\ /1 Ir-rvsr - I~ fk;' ~ _N . -/ CDC Tracking Code: CDC EXTENSION REQUEST (To be submitted by CDC Applicant to local CDC/Floodplain Administrator, with a copy to NCTCOG) General. This application should be completed according to the guidelines set forth in the Corridor Development Certificate Manual, 2n~ Edition. Information provided by the Applicant herein will be used by the City/County to evaluate the extension of the Trinity River CDC permit. This application is public information and will be used by other relevant flood plain regulatory authorities (e.g., USACE, FEMA and TNRCC). If granted, the permit extension applies to the Corridor Development Certificate only. If additional space is needed to complete this application, please attach a separate sheet labeled appropriately. Appllcant's Representative. Identify person knowledgeable of and authorized to respond to questions concerning data provided by the Applicant. Relationship to Applicant: Address: Telephone/fax/e-mail: Explanation for Extension Request Status of Other Related Permits / Projects Applicant's Signature / Typed Name / Title Date CDC Administrator Action/Findings (To be filled out by CDC Administrator) Extension Request Granted? Period of Extension: FROM: Yes [] No [] TO: Signature of CDC Administrator / Typed Name / Title Date CDC Tracking Cede: INTENT TO PROCESS FORM (To be filled out by CDC/Floedplain Adminis~'ator and submitted along with Part 1, Part 2, and the PreHtninary Technical Review (if requested) to USACE, local signatories, NCTCOG, TNRCC & FEMA, whose addresses ar~ listed in Appendix F of the CDC Manual.) If a project falls partially or completely in the Regulatory Zone, this form should be completed. City/County of: CDCPFloedplain Administrator: Telephone No: 2. Part or all of project is within the CDC REGULATORY ZONE. Yes [] No [] If the answer to this question is No, NO CDC PERMIT is required and this form does not have to be comph:~c?¢ Exempt Category: (check if applicable - additional documentation may be required) [] maintenance/repair of flood control swactures r'l outfall/intake structure permitted under NPDES program [] discharge of material for backfill or bedding for utility lines with no change to bottom contours [] bank stabilization activities [] other State/Federal Review Hkely to be required: a. FEMA Conditional Letter 9f Map Revision (CLOMR) [] Yes [] No b. USACE Section 404 Permit & TNRCC State Certification [] Yes [] No Pursuant to Clean Water Act Section 401 (required for projects involving dredging or filling in Waters of the US) c. TNRCC Plan of Reclamation (for levee improvement districts only) [] Yes [] No 5. Administrative Comments: 6. ITP sent to: USACE7 __ Local Signatories.'? NCTCOG7 ~ FEMA? __ TNRCC? By my authority under the City/County, I hereby issue and record the City/County's findings. ']Ch~s nonce of Intent to Process in no way implies that final project approval will be granted by the City/County. Signature of CDC/Floedplain Administrator / Typed Name / Title Date CDC Tracking Code: FINAL CDC ACTION/FINDINGS FORM (To be filled out by CDC FIoodplain Administrator and submitted to NCTCOG) 1. CDC Action: (check one) [] permit granted Date f'l permit granted w/conditions (explain in #8) Date [] permit denied City Action if Variance was requested: [] granted (explain in #8) [] denied [] N/A Listing of Commentators (written comments on this application were received froth): 4. USACE Preliminary Technical Review completed? [] Yes (attached) 5. Operation and Maintenance Agreement: [] executed (attach copy) Date/Initials: [] No (explain) [] not applicable (explain) The CDC wlU cease to be in effect: I'1 five yeats after the date of issuance if no development activities are undertaken [] DATE: (if different fi'om 5 years) 7. Final Findings of Fact: (summary of City or County's findings/comments/conditions) Project Changes: Is the project substantially the same as the project described in Parts I & 2 of the Standard CDC Form7 rl Yes rl No If no. plee. se explain: By my authority under the City/County. I hereby issue the City/County's findings and final action. Signature of CDC/Floodplain Administrator / Typed Name / Title Date - =1:1 CCI - -() -...::::, 0- /"J'1 ... 4G.I 11L~~' - -~ = * y 0... -. ~/? ( _\ll-'~'l ~:~~- _ - _'J -v: _ ~ · ('1.< l /. _ -= I pz. ..Q , : - ~ ~'" Sl_ ,~" ffiTflll\rrfTTT -I [t p- - _ I 1 I ~ U ~ ~ -,UI), D~ ~ ~'!oo. _!.). :::\ t~' f.~~_ ==: @ V ~-/~ ~ C;' -'-~ u ~ =' · ~ _ 0- l I ~. t :a -r=-~. - -- ~~~ ~ ~~. r\\~ - \_ _ .:-: M!J-".~~ ~ ." \~ · _ lJii!\1 ~'l3 ~\\ ~ ~ ~ I "10 ~ ~ ~ ~ \ ~ ~ ClCIl g ... ~ _~'_ = ,... ~ ~ ... rr ~ J ~ ____......_ "'- ...... _ e ~ <8> \' 'l- I \ _ (?' IJOO'lflllU'IJ1l ?"'i"" ~ J _~ ~ ~ '~ A' IT 8, = '-. ='" """ o-~~ r- - ... ~I ~ c:::::J I - - -t: '1/ ~ "^ '" _ JDj?\ '4~ - .',::::?':;J. r . _ V ff?>>.,......" ~ 1" >l'\\ ~~ ~~ ~),. Ii 4;) '... · ~ 41Ji1;:) Xc - 7ft / J!" ~I(\ ~ 13 ~ II d.. ~ ~.",. ) \ i~ - - a~;f/ ~ :I::: . ~ ,\.....-~. \: \, j c_ '\ ~ - ~ ///1/ '" ~ ~-~ ~~ ~\ - '?!! J ~. - I;j -/ II. v0 t'~i \.~n (( I~ Y. \V ,\,~ I.c:::....,. ~~ - fIA /12 ~" c u~ ~ ~ \1- 'I1i,~. . \ Nh 'G .nil \ I t.; f/ 'I;;;<~ '/ /, 'IJ _ /. ~ r -".~,fJ I~~'[ I ~ '" <J/ e I ~ -, ( I '0 "t '~ 8 r-'[J, ~~", m . ~/d. "1." "~W{; f-' ~ 'd ~ 'S L l'~ / ( _ I \ ~~.' I - ~ _ , _ _ !/J'I ~ 'l; l r\ ,; ~12 I I ~, _./ ~ _ __ .. . _ __ __ .~rl 5!). -' 1 1 L _\ . ./l '0 r~;: fE'/,I .~ - -~ T - -" /" 'h I _ _ _ 1- ~//~ -FIS ~ ~ ~ //, J- r.:! '~i l~I'S 92.J9(~ i '4 '1lA\~ ~~1:S;, _~~ '~'-' L U\~ L // ~&~~A~.Jd.. I; - "'i.!l, I1..t:: [A ~ ( ~. 'r/- ,~ ::- ~ ~ I'-,! - ')) I ~i~.o ='~ --:: ~ '" ~~.:::. I( ~ ~ - -lJ (h '/.I_~ ~,~ ~J' ~ i%' ~\ 0 C' '- -( fA'- .... ~ _ lr2~ " /(1 r" - v r" ~_ _ \ ~~ ft.!'r I '.)j<...l - ,,' '" ~ _ _ _ ""'W-= _ ' ~-=---- I'-~ . ~ L G:K\\'- !! ~DDPc:'i"N ~LL - - - ;;:-. .. i)'" N ~ ( PROJECT R - ~I..!. ~ ~ ~ STORAGE COMPENSATION -ld ~ - ~ . ~ <\, \ 1 _ FLOODPLAIN ~ - 4 A, P , 6 2 - ~ :<: _-" Jlll \ ~ ~ ~~. U - - ~ II/) / I I r f'IK , ^ , , . I " ,'-, I~ '\ J.;_~,) ~ ~~" t -.--.- .., ~')'I ~ ~ - - - "'-.:.1 - - ~ SCALE ...... 1"-400' t ((~I (0 Existing 100 year and spf volume HEC-2 WATER SURFACE PROFILES Version 4.6.2~ May 1991 RUN DATE 2IJ~3q99 TIME 15:39:26 EXISTING 100 year and spf volume q8 ACRE TRACT (916} 756-~104 HEC 2 WATER SURFACE pROFILES Version 4.6,2; May 1991 T2 T3 VOLUME DETEIe4INATION FOR SITE ELM FOP/< OF THE TRINITY RIOTER 100 YEAR DESIGN CITY OF COPPELL J1 ICHECK INQ NIBFJ IDIR 0 2 0 0 1/9/99 STRT 0 XSECH Existing Cond. FILE: VOLL~4E METRIC h~IINS Q WSEL 0 0 0 445.6 FQ J3 VARIABLa CODES PDR SLaY pRIb[TODT 38 1 4 7 25 J5 Lpp/~T NUMSEC QT 2 5000 5000 NC .05 .05 .05 X5 2 445.6 450.49 GR 451 0 442.8 1550 0 0 0 540 444 580 446 1420 446 1550 451 X1 2 25 0 X5 2 445.45 GR 451 0 442.7 GR 450 125 451.9 330 443.6 400 620 447.2 730 1550 Xl 3 13 0 X5 2 445.4 45035 GR 451 0 443.1 GR 446 380 448 GR 446 1200 444 1410 210 210 210 0 444 90 446 95 448 100 150 450 170 448 180 446 190 210 442.9 280 444 290 446 310 820 450 950 442 980 442 1020 1210 446 1350 444 1410 451 1410 1270 220 220 220 o 443,1 60 443.2 550 449.3 780 448 1270 451 1270 220 {44 300 950 447.6 1110 PAGE 2 X5 2 445 25 4503 GR 451 0 442 0 GR 446 360 448 500 GR 444 1130 451 1130 X1 5 9 0 1000 X5 2 445.21 450,25 GR 45I 0 442 GR 448 480 ~48 740 Z1 6 12 O 920 X5 2 445.1 450.2 GR 451 0 440.4 0 GR 444 300 446 360 GR 446 920 451 920 230 230 230 442 30 442 260 449.5 650 448 840 444 446 300 1070 190 190 190 442 290 444 300 446 350 446 1o00 451 1000 160 160 160 442 90 442 110 442 290 448 525 448.5 600 448 700 220 305 505 X1 7 11 0 730 320 32Q 320 X5 2 444,9 450.1 GR 451 0 ~42 0 442 160 442 Gp 444 300 446 320 447.5 470 44S GR 451 730 442 445 446 X1 8 9 0 505 370 370 370 X5 2 444,82 450.09 GR 451 0 442 G 442 290 444 GR 446,7 380 446 480 445 505 451 28O 730 320 T2 T3 J2 21JA/~99 15:39:26 SPF DESIGN CITY OF COPPELL ICHECK INQ NINV IDIR 0 3 O 0 NPROF IpLOT pRFVS XSECV 1/9/99 FILaE: VOLU~ STRT METRIC HVINS Q WSEL O 0 0 0 450.49 XSECH FN AL~/DC IBW CHNIM 0 PAGE PAGE 4 HEC-2 WATER SURFACE PROFILES Verslon 4.6.2; May 1991 NOTE- ASTERISK (*) AT LE~f OF CROSS-SECTION NLTMBER INDICATES MESSAGE IN SUPe4A2Y OF ERRORS LIST 100 TFJLR DESIGN CITY OF SU~y pRI~Fr0UT SECNO CWSEL TOPWID VOL APjEA 1.000 445.60 802.Q1 O0 1227+6I 1.0O0 450.49 1550.00 .00 8369,49 2.000 445.45 316.13 4,52 647,44 2.000 450.40 1374.47 32.60 5156.63 3,OgO 445,40 405,00 7.96 715.50 3,000 450,35 1270,00 58,02 ~906,51 4.000 445.25 375.00 12.44 981,88 21JA2q99 15:39:26 EXISTING 1O0 year alld sp~ volume PAGE 5 $Lr~y OF ERRORS AiqT3 SPECIAL NOTEg NOTE SECRqO= 2.000 pROFILE_ · WSEL BAS~) WA~INING SECNO- 2 000 PROFILE= 1 COIqVEYANCE NOTE SECNO= 2.000 PROFILE 2 WSEL BASED WAjlNING SEC~O 2.000 PROFILE- 2 C01{VEy~2qCE NOTE SECNO= 4,000 PROFIL~ 1 WSEL BASED WARNING SEC~O- 4,000 PROFILE= 1 CON~FEy~2qCE NOTE SECNO_ 4.000 PROFILE= 2 WSEL BASED ON X5 C~ CH~GE OUTSIDE ACCEpT~LE RAIqGE ON X5 NOTE SEC~O- 5,000 PROFII~E 1 WSEL BASED ON X5 C~jFD NOTE SECI~O_ 5.000 PROFII~E= 2 WSEL BBED ON X5 CltRD NOTE SECNO- 6,000 PROFILE 1 WSEL B~ED ON X5 CAJD NOTE SECNO= 6.000 PROFILE= 2 WSEL B~SID ON X5 CARD NOT~ SECNO- 7.000 PROFILE= 1 WSEL BASED ON X5 C~RD NOTE SECNO= 7.000 PROFILE= 2 WSEL BA~ED ON X5 CArD Proposed 100 year and spf Volume HEC 2 WATER SURFACE PROFILES Verslon 4.6.2; Ma'F 1991 RUN DATE 21JAN99 TIME 15:42:35 pROpOSID lOG year ~d spf volume ACRE TRACT * U.S. ]~MY COPES OF E1WGI~FEER HYDROLOGIC ENGINEERING CENT 609 SECOND STREET, SUITE D Proposed 100 year and spf volume PAGE 1 HEC 2 WATER SURFACE pROFILES Version 4.6.2; May 1991 THIS RUN [GIECU~ 21JAN99 15:42:35 T1 VOLU~ DETEP~MINATION FOR SITE [/9/99 pROpOSED COND, T] 100 yF~ DESIGN CITY OF COPPELL FILE: volp] J1 ICHECK INQ NINV IDIR STRT ~TRIC HVINS Q 0 2 0 0 0 o 0 0 J2 NPROF IPLOT pRFVS XSEC~ XSECH FN ALLDC IBW WSEL FQ 445.6 0 C}~qIM ITRACE QT 2 5000 5000 X1 1 9 0 1550 0 0 0 X5 2 445.6 450,49 120 440 133 1550 224 446,45 250 224 446,4 250 225 446,25 250 21JAN99 15:42:35 PROPOSED 100 year and spf volume pAGE 2 XI 5 7 O X5 2 445,21 450.25 GR 451 0 442 0 GR 446.2 10QO 451 1000 X1 6 7 0 920 X5 2 445.1 450.2 GR 451 0 440.4 0 GR 446 1 920 451 920 Xl 7 ? 0 730 X5 2 444.9 450.1 GR 451 0 442 0 GR 445.9 730 451 730 X1 8 ? O 505 X5 2 444.82 450.09 GR 451 0 442 0 GR 445.82 505 451 505 190 190 190 440 8 440 225 446.2 250 160 160 160 440 2 440 226 446 i 250 320 320 320 440 8 440 226 445.9 250 370 370 370 440 ~ 440 227 445.82 250 T2 J2 21J/~N99 15:42r35 SPF DESIGN CITY OF COpPELL 0 3 0 0 NPROF IPLOT pRFVS XSECV pROPOSED 100 year and spf volume 1/9/99 STRT 0 XSECH 0 ALLDC Q IBW WSEL 450.49 CHNIM PAGE PROPOSED 100 ye~r a/~d 3pf volume PAGE 4 THIS RDN EXECL~D 21J~2q99 15:42:35 NOTE- ASTERISK (*) AT LEFT OF CROSS SECTION NU~ER INDICATES MESSAGE IN SU~Y OF ERRORS LIST 100 yEAR DESIGN CITY OF SU~Y pRINTOUT SECNO CWSEL TOPWID VOL ~ 1.000 445.60 246.06 .0O 1032,57 1.000 450.49 1550,00 ,00 7310.08 2.000 445.45 245,97 5,54 1265.82 2.000 450.40 1410,00 34.~9 7083,28 3,a00 445,40 245.94 11.89 1250.23 3.000 450,35 1270,00 69.03 6514.71 4000 445.25 240 00 18.44 1228.38 4,000 450.30 1130.00 102.21 6052.86 5.000 445,21 246,01 23.77 1218+97 5.000 450.25 1000,00 127.44 5514+49 6,000 445,10 240,07 2B 22 1203,37 6.000 450,20 920,00 147.16 5223.41 7.000 444,90 245.93 3~.86 1148.23 7.000 450,10 730,00 182.74 4462.21 8.000 444.82 246+05 46.55 1132.05 8,000 450.09 505.00 216.71 3536.42 21JA/~99 15:42:35 PROPOSE 100 year ~d spf volume pAGE 5 SLaY OF ERRORS ~j~rO SPECIAL NOTES NOTE SECNO= 1,000 PROFILE= 1 WSEL BASRD ON X5 CJ~RD NOTE SECNO 1.000 PROFILE- 2 WSEL BASED ON X5 CAPD NOTE SECNO- 2.000 PROFILE= 1 WSEL B3~SED WAP~NING SECNO 2.000 PROFILE- 1 CON~fEYA/~CE NOTE SECNO= 2.000 PROFILE_ 2 WSEL BA~D CHA~NGE OUTSIDE ACCEpTkBLE FjtNGE NOTE SECNO= 4,000 PROFILE= I WSEL BASE ON X5 C~ NOTE SECNO_ 4.000 PROFILE 2 WSEL BASED ON X5 C~ NO]rE SECNO_ 5.000 PROFI~JE- 1 WSEL NOTE SECNO- 5.000 PROFILE= 2 WSEL BASED ON X5 CARD NOTE SECNO= 6,000 PROFILE= I WSEL BASE ON X5 C~j~D NOTE SECNO- 6,000 PROFILE= 2 WSEL BASE ON NOTE SECNO_ 7.000 PROFILE- 1 WSEL BASED ON X5 C~ NO]ME SECNO_ 7.000 pROFILE- 2 WSEL BASIN) ON X5 C/tRD NOTE SECNO 3.000 PROFILE- 1 WSEL BASED ON X5 ~ NOTE SEC~NO_ 3.000 PROFILE_ 2 WSEL BASED ON X5 C~ EXISTING 100 year and spf volume 10 ACre SITE |0 ACRE TRACT Version 4.6,2; May 1991 Fj4ISTING i00 year ~d spf volume 10 AC SITE PAGE HEC-2 WATER SURFACE pROFILES Version 4,6,2; May 1991 T2 T3 VOLU~ DETERMINATION FOR SITE ELM FOF~K OF THE TRINITY RIVER 1O0 yEj~R DESIGN CITY OF COPPELL J1 ICHECK INQ NINV IDIR 0 2 0 0 J2 NPROF IPLOT PRFVS XSEC'$ 38 1 4 J5 LPR~ NUMSEC QT 2 1000 1000 NC .05 .05 I05 X5 2 445.25 450,3 GR 451 0 442 GR 452 695 X1 2 7 O X5 2 445.21 450.25 GR 451 O 442 GR 450 620 452 X1 3 7 0 X5 2 445.1 450.2 GR 451 0 442 GR 450 570 452 X1 4 7 0 X5 2 445 450.1 GR 451 0 442 GR 450 615 452 FILE: VOL1OE STRT METRIC h~JINS 0 O O XSECH FN ALLDC Q WSEL FQ 0 445.25 0 0 446 465 448 575 450 670 635 i00 1DO 1O0 o 444 50 446 260 448 540 635 590 300 300 300 0 444 75 446 475 448 550 590 635 200 200 200 0 444 200 446 495 448 595 635 21JJ~N99 15:46:43 T2 T3 SPF VOLC3ME DETERMINATION FOR SITE ELM FORK OF THE ?RINITy RIVER DESIGN CITY OF COPPELL J1 ICHECK INQ NINV IDIR EXISTING 100 y~ar ~nd spf volume 1o AC SI%mE 1/'9/'99 STRT METRIC ~{VINS Q WSEL 0 0 0 0 450,3 XSECH ~Uj ALLDC IBW CHNIM PAGE 21J~N99 15:46'43 EXISTING 100 year ~nd spf volume i0 AC SITE PAGE NOTE ASTERISK (*) AT LEFT OF CROSS SECTION NU~EJ~ INDICATES MESSAGE IN SU~y 0 F EP2OR$ LIST 1o0 YEJ~R DESIGN CITY OF SLaY PRI~TOUT SECNO CWSEL TOPWID VOL A~ 1.000 445.25 377.81 .00 613.95 1.000 450.30 673.75 .00 3416,55 4.000 450.10 61600 39.32 3256.55 21JA~99 ·5:46:43 EXISTING 1O0 year ~nd spf volume 10 AE SITE pAGE 4 SU~y OF EP~ORS A~D SPECIAL NOTES 1.000 PROFILE_ 1 WSEL BA~ED ON X5 C~ 1.0OO PROFILE= 2 WSEL BASED ON X5 CA~$ NOTE SEC~O~ 2.000 pROFILE= WAS%NING SEC~NO~ 2.000 pROFILE_ NOTE SEC~O~ 2.000 PROFILE_ pROFILE_ 1 WSEL BASED ON X5 C~ PROFILE_ 2 WSEL BASED ON X5 CAI%D NOTE SECNO~ 4.000 pROFILE= · WSEL BASED ON X5 C3~ WA]INING SECNO~ 4.000 pROFILE= 1 CON~YAIgCE CHA~GE OUTSIDE ACCEPT~BLE PJ~NGE NOTE SEC~40= 4.000 pROFILE- 2 WSEL BASED ON X5 CAj~D Proposed 100 year and spf volume 10 ac site 10 acre tract Version 4.6.2; HaV 1991 RUN DATE 21JA~99 TI~ 15:50:31 ACRE TRACT (916) 756-1104 X X XXXXXr, X X.XXXX X X X X X X X X X X.XXXX.XX XXX.X X X X X X X X X X X X X XX.XYa(XX XXXXX 11JAN99 15:50:31 PAGE T2 T3 38 1 4 X1 3 8 0 Ya 2 445,1 450.2 GR 451 0 446.1 GR 448 550 4~0 21JAN99 15:50:31 T2 T3 J1 ICHECK 0 PAGE 21JAN99 15:50:31 PAGB 3 THIS RUN E,~CUT~D 21JAN99 15:58:31 21JAN99 15:50:31 PROPOSED 100 year and spf volume 10 AC SITE PAGE