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CF-Andrew Park FS-SY000119
FLOOD PLAIN DEVELOPMENT PERMIT APPLICATION for the ANDREW BROWN JR. COMMUNITY PARK (CENTRAL) PEDESTRIAN BP~DGE HYDRAULIC STUDY along COTTONWOOD BRANCH In the City of Coppell, Dallas County, Texas Prepared for the CITY OF COPPELL PARKS DEPARTMENT By HalffAssociates, Inc. 8616 Northwest Plaza Drive Dallas, Texas 75225 This doc,unent is for Permitting purposes only and is not intended for Bidding or Construction. AVO 181O9 January 2000 HALFF ASSOCL~TES, INC. ll1 ENGINEERS · ARCHITECTS ° PLANNERS ", Halff Associates ENGINEERS · ARCIIITECTS · SCIENTISTS PLANNERS · SURVEYORS City of Coppell 255 Parkway Boulevard Coppell, Texas 75019 Atm.: Mr. Gary Sims, Director, Leisure Se~wices Department City of Coppell 8616 NORTHWEST PLAZA DRIVE DALLAS, TEXAS 75225 (214) 346 6200 FAX (214) 739 0095 January 10, 2000 AVO 18109 Flood Plain Development Permit Application. Andrew Brown Jr. Community Park (Central) Pedestrian Bridge Study City of Coppell, Dallas County, Texas Dear Mr. Sims: Halff Associates, Inc. has completed an engineering report in support of a proposed pedestrian bridge construction project at the Andrew Brown Jr. Community Park Central in Coppell, Dallas County, Texas, on behalf of the City of Coppell Parks Department. Enclosed you will £md the technical data required for a Flood Plain Development Permit Application for the aforementioned project. The Cottonwood Branch modeling is based on the Coppell City-Wide Storm Water Management Study Hydraulic ultimate landuse condition model. The Denton Creek analysis was prepared using the ultunate landuse conditions model developed for the Andrew Brown Jr. Community Park (East) Conditional Letter of Map Revision (CLOMR) submittal to the Federal Emergency Management Agency (FEMA). The hydraulic models were modified to reflect recent improvements as detailed in the Denton Creek and Cottonwood Branch Confluence Hydraulic Study, Existing Conditions, as prepared by Halff Associates, Inc., January 2000. The City of Coppell Flood Plain Development Permit Application form can be found in section III of this report. Flood plain mapping and related information are located in section IV. Hard copies of the required HEC-2 and HEC-RAS hydraulic models (for ultimate landnse or fully developed landnse conditions) are included with this report as Appendix C through F. Digital versions of the models input data files are included on Disk in Appendix G. Thank you for your consideration of this Flood Plain Development Permit Application. Please call me at (214) 346-6209 should you have any questions, or if I can be of further assistance. You may also reach Mr. Dick Westsmith at (214) 346-6325. Sincerely, ItALFF ASSOCIATES, INC. Dan Diamond, EIT Enclosures. cc: Mr. Ken Griffin, P.E., City Engineer, Assistant City Manager and Director of Public Works Mr. Brad Reid, Park Planning and Landscape Manager, City of Coppell DALLAS * FORT WORTH · HOUSTON. McALLEN TRANSPORTATION · WATER RESOURCES · LAND DEVELOPMENT · MUNICIPAL · ENVIRONMENTAL- STRUCTURAL MECHANICAL · ELECTRICAL · SURVEYING · GEOGRAPHIC INFORMATION SYSTEMS ARCHITECTURE · LANDSCAPE ARCHITECTURE · PLANNING FLOOD PLAIN DEVELOPMENT PERMIT APPLICATION ANDREW BROWN JR. COMMUNITY PARK (CENTRAL) PEDESTRIAN BRIDGE HYDRAULIC STUDY TABLE OF CONTENTS Project Description A. Inttoduction B. Mapping C. Base Models D. Revised Existing Condition Models E. Proposed Condition Models F. Results and Conclusions Page # 1 1 1 2 2 2 II. Photographs III. Forms Form 1 ~ City of Coppell Flood Plain Development Permit Form IV. Exhibits Exhibit 1 Exhibit 2 Exhibit 3 Exhibit 4 Exhibit 5 Exhibit 6 Exhibit 7 Exhibit 8 Exhibit 9 Exhibit 10 Location Map Denton Creek Cross Sections - 24" x 36" Cottonwood Branch Cross Sections - 24" x 36" Proposed Pedestrian Bridge Site Plan 100-Year Fully Developed Water Surface Profile - Denton Creek 2-Year Fully Developed Water Surface Profile - Cottonwood Branch Modified Existing Model Cross-Sections - Denton Creek Modified Existing Model Cross-Sections - Cottonwood Branch Proposed Model Cross Sections - Denton Creek Proposed Model Cross Sections - Cottonwood Branch Appendices Appendix A Appendix B Appendix C Appendix D Appendix E Modified Existing Denton Creek HEC-2 Model - (DC-me.dat) Modified Existing Cottonwood Branch HEC-2 Model - (CW-me.dat) Proposed Demon Creek HEC-2 Model - (DC-prop.dat) Proposed HEC-2 Cottonwood Branch Model - (CW-prop.dat) Digital Input Data Files on Disk FLOOD PLAIN DEVELOPMENT PERMIT APPLICATION ANDREW BROWN JR. COMMUNITY PARK (CENTRAL) PEDESTRIAN BRIDGE HYDRAULIC STUDY Table 1 Table 2 LIST OF TABLES Comparison Table of Water Surface Elevations, Channel Flow Velocity, Denton Creek 100-Year Flood, Fully Developed Watershed Comparison Table of Water Surface Elevations, Channel Flow Velocity, Cottonwood Branch 2-Year Flood, Fully Developed Watershed Page # 3 4 I. PROJECT DESCRIPTION A. Introduction and Site Description. Halff Associates, Inc. was retained by the City of Coppell Parks Department to determine the design elevation of a proposed pedestrian bridge across Cottonwood Branch, and to determine the impact of the proposed bridge construction on the surrounding area. The purpose of this bridge is to allow pedestrian access from the developed facilities within Andrew Brown Jr. Park Central to areas within Andrew Brown Jr. Community Park (East). This report provides technical data in support of hydraulic engineering analysis of the proposed crossing based on fully developed or ultimate landuse conditions. The pedestrian bridge will cross the Cottonwood Branch approximately 0.2 miles upstream of the Cottonwood Branch - Denton Creek confluence. The confluence is located downstream or east of Denton Tap Road and north of Parkway Boulevard within Andrew Brown Jr. Community Park (East) in the City of Coppell, Dallas County, Texas. 7his hydraulic analysis extends upstream and investigates flood patterns in Andrew Brown Jr. Corrtmunity Park (West), West of Denton Tap Road. Cottonwood Branch is a tributary of Denton Creek, which is itself a tributary of the Elm Fork of the Trinity River and flows in an easterly direction near the northern corporate limits of the City of Coppell. Denton Creek drains a watershed area of 719 square miles which includes 695 square miles of drainage area for Lake Grapevine and Cottonwood Branch. The study area is located approximately 5 river miles upstream of the confluence of Denton Creek with the Elm Fork of the Trinity River. B. Mapping. The revised floodplain delineations shown on Figure l, Existing Flood Plain, were drawn against the City of CoppelI 1998 aerial topographic mapping by Teague Nall& Perkins and Dallas Aerial Surveys, Inc. (Texas State Coordinate System, North Central Zone - NAD '83 - Photo date: March 18, 1998). The aerial topography was modified per the January 1999 Denton Tap Road bridge construction plans by Wier and Associates, Inc., and per the April 1998 Andrew Brown Jr. Community Park (Central) ball fields construction plans by Schrickel, Rollins and Associates, Inc. (SPA). At the time of the present study's field surveys, construction of the ball fields was complete while construction of the bridge was almost complete. As-built plans were not yet available in both cases. C Base Models. This base models used within the hydraulic study, Dcexist3.dat and Cwexist2.dat, were developed in December 1999 by Halff Associates, Inc. for the Denton Creek / Cottonwood Branch confluence study. Analysis of flow patterns in the lower 1300 feet of Cottonwood Branch further revealed that waters generally flow towards the west in the event of a low flood (2-year probability flood), while during high floods (100-year probability flood), the Denton Creek dictates the flow direction towards the east. Therefore, Iow flow conditions were modeled in an extended version of the Cottonwood Branch hydraulic model, while high flow conditions were modeled in a revised version of the Denton Creek model. D. Revised Existing Condition Models. The revised hydraulic models show that Cottonwood Branch waters will flow into Andrew Brown Jr. Park East during a 2-year probability flood. A small berm (from elevation 444.0 - to 453.2, ) was constructed in 1993 in an effort to reduce the frequency of flooding in the park. The December 1999 Cottonwood Branch hydraulic model computed that the small berm will be overtopped by approximately 3.0 feet in the event of a 2-year flood. However, in the last seven years since it was constructed, the berm has been overtopped only twice, indicating that the discharges have not reached the ultimate landuse conditions. The confluence study Cottonwood Branch HEC-2 model, Cwexist2.dat, was revised in the vicinity of the proposed pedestrian bridge. Eight cross-sections were inserted at the downstream end of the model, including four at the bridge itself (11+71, 11+72, 11+77, and l 1+78) which were added to perform the HEC-2 normal bridge routine. As shown on Exhibit xxx, all eight added cross-sections reflect an extensive left overbank area across the Andrew Brown Jr. Park Central newly constructed softball fields, an area which conveys approximately 40% of the flow within this section of stream. The same cross-sections also model an ineffective flow area near the left bank, the high area separating the Cottonwood Branch main channel from the left overbank. Waters of Cottonwood Branch that overflow into Andrew Brown Park East at the location of the small berm mentioned above were modeled as weir flow, and approximately 580 cfs diverges off from the channel during the 2-year storm event. Four cross-sections were added in the confluence study Denton Creek HEC-2 model DCexist3.dat at the location of the proposed pedestrian bridge. These four cross-sections (30203, 30204, 30209, and 30210) were added between existing cross-sections 30027 and 30384 to perform the HEC-2 normal bridge routine. In the confluence study Denton Creek HEC-2 model, cross-section 30384 is the last cross-section that includes both the Cottonwood Branch and the Denton Creek flows. The four added cross-sections are downstream of 30384, and consequently also carry both flows. E. Proposed Condition Models The proposed pedestrian bridge was inserted in both low flow (Cottonwood Branch - CWprop.dat) and high flow (Denton Creek - DCprop.dat) HEC-2 hydraulic models. The 85 foot span bridge is modeled with a 0.5 foot camber resulting in a low chord elevation at the footings of 456.75 and a low chord elevation at mid-span of 457.25. The bridge was modeled from examples shown in the Unit Structures and Steadfast Bridges manufacturers' brochures and direction from Brad Reed of the City of Coppell Parks Department. Modifications to the channel were deemed unnecessary. The bridge deck low chord elevation of 457.25 allows passage of both the 2-year probability flood (Cottonwood Branch model, elevation 456.13) and the 100-year probability flood (Denton Creek model 456.95). F. Results and Conclusions Because the proposed pedestrian bridge spans the creek above the 100-year water surface elevation, the design elevation of the proposed pedestrian bridge yields no rise in 100-year fully developed or ultimate landuse flood level elevations, and no differences in flow velocity. 2 TABLE 1 City of Coppell - Cottonwood Branch Pedestrian Bridge Hydraulic Study Comparison Table of Hydraulic Results - Denton Creek Ultimate (Fully Developed) Watershed Conditions, 100-Year Probability Flood Existing Model Modified Existing Model Proposed Model Water surfaec elevations & Water surfaec elevations & Water surfaec elevations & Channel Velocities Channel Velocities Channel Velocities lo0-year 10~y~ar; Difference Dfffe~ 100-year 100-year Diffe~ Difference 100-~ i~-~ar SECNO Q : ~SEL VCH SECNO Q CWSEL VCH in wsel in sECNo Q CWSEL VcH ih~wsel i~ch 18440 23083 45238 2.9 18440 23083 452.38 2.9 000 0.0 18440 23083 452.38 29 0.00 0.0 19330 23083 45251 2.0 19330 23083 452.51 2.0 000 0.0 i6~0 23083 45251 2.0 0.00 0.0 39930 23083 452 51 31 19930 23083 452.51 31 0.00 0.0 t~0 23083 452.51 3.1 0.(30 0.0 23083 45267 45 21560 23083 452.67 45 0.00 0.0 21560 23083 45267 4.5 0.00 0.0 22370 23083 452.90 49 22370 23083 452.90 4.9 0.00 0.0 2~ 23083 452.90 4.9 0,00 0.0 2~ 23083 453.38 2 7 23800 23083 453.38 2.7 0.00 0.0 ~ 23083 453.38 2.7 0.00 0.0 24400 22468 453.88 27 24400 22468 453.88 2.7 0.00 00 24400 22468 453.88 2.7 000 0.0 24~00 22468 453.83 4 I 24700 22468 453.83 4.1 0.00 0.0 24700 22468 453.83 4.1 0.00 0.0 25530 22468 45396 72 25530 22468 453 96 7.2 0.00 oo 25530 22468 45396 7.2 0.00 0.0 25770 22468 454.46 58 25770 22468 454.46 5.8 000 0.0 25770 22468 454.46 5.8 0.00 0.0 26830 22468 455.29 52 26830 22468 455 29 5.2 0.00 0.0 26830 22468 45529 5.2 0.00 0.0 26880 22468 455.35 52 26880 22468 455.35 5.2 0.00 O0 26880 22468 45535 5.2 0.00 0.0 27165 22468 45584 2.9 27'~65 22468 45584 2.9 0.00 O0 27165 22468 455.84 2.9 0.00 0.0 2~fl49 22468 455.94 28 27449 22468 455.94 2.8 0.00 0 0 27449 22468 455.94 2.8 0~30 0.0 ~748 22468 45605 3 0 27748 22468 456.05 30 O.OO 0.0 27~48 22468 456.05 3.0 0.00 0.0 ~2 22468 456.16 2.4 27992 22468 456.16 2.4 0.00 0 0 2~2 22468 456.16 2.4 O.30 O0 22458 45622 19 28168 22468 456.22 19 000 0.0 28~68 22468 456.22 19 0.00 0.0 ~22: 22468 456.26 19 28492 22468 45626 1.9 0.00 O0 :~{)2 22468 45626 1.9 0.00 0,0 ~20 ~; 22468 456.31 2.3 28720 22468 456.31 23 000 0.0 : 28~20 22468 456.31 2.3 0.00 0.0 ~ 22468 456.34 2 9 28890 22468 45634 2.9 000 0.0 28890 22468 456.34 2.9 0.00 0.0 ~;J24 22468 456.44 3.8 29124 22468 456.44 38 000 0.0 29124 22468 456.44 3.8 0.00 0.0 22468 456.71 32 29651 22468 456.71 32 0.00 0.0 29651 22468 456.71 3.2 000 0.0 29831 22468 456.78 3.4 29831 22468 456.78 3.4 0 O0 O0 29831 22468 456.78 3.4 0.00 30027 22468 456.84 4 6 30027 22468 456.84 4 6 0.00 O0 30027 22468 456.84 4.6 0.00 0.0 30203 22468 45695 6 I 3~2~ 3 22468 456.95 6.1 0.00 0.0 30204 22468 456.95 6.1 30204 22468 456.95 6.1 0.(30 0.0 30209 22468 45696 61 30209 22468 456.96 6.1 0.00 0.0 30210 22468 456.96 6.1 30210 22468 456.96 6.1 000 O0 22468 457.23 62 30384 22468 457 27 6.2 OO4 O0 22468 457.27 6.2 000 0.0 ~ 19569 457 80 5.8 30604 19569 457,84 58 004 O0 ; 30604 19569 457.84 5.8 0.00 0,0 19569 458.27 5 3 309,58 19569 45831 53 004 O0 30958 19569 458 31 5.3 0.00 0.0 : ~t335 i 19569 457.92 14 0 31335 19569 457.95 13.9 003 0.0 31335 19569 457.95 13.9 0.00 0 : 3'~; ~ 19569 458.79 12.9 31380 19569 458.81 128 002 0.0 31380 19569 458.81 12.8 0.00 0.0 19569 459.99 124 32i5~ 19569 460.19 121 0.20 -0.3 32150 19569 460.19 12.1 0.03 0.0 ; ~90 1~ 19569 461 40 94 32190 19569 461.49 9.3 0.09 ~.1 32190 19569 461.49 9.3 000 0.0 32300 19569 46152 9.0 32300 19569 46207 8.6 055 ~).4 3~ 19569 462.07 8.6 000 0.0 32355 ~ 19569 461.39 10.3 32355 19566 461.96 98 0.57 ~).4 32355 19569 481.98 9.8 0.00 0.0 461.63 100 3~'400 19569 462.19 96 0.56 -0.4 ,~32~O0 19569 462,19 9.6 0.00 0.0 ~.~2400 ~;C 19569 ~ 16681 46451 28 ;~4260 16681 46477 2.7 026 qJ.1 34260 ;; 16681 464.77 2.7 0.00 0.0 ~0 ; 16681 467.39 5.8 ~970 16681 467.44 5.7 0.05 0 0 ~7~ 16681 467.44 57 0.00 0.0 16681 468,15 2.5 38200 16681 468.19 25 0.04 0.0 38200 16681 468.19 2.5 0.00 0.0 :3~0; 16681 468.35 3 0 39290 16681 468.38 30 0.03 0.0 39290 16681 468.38 3.0 0.00 0.0 3 TABLE 2 City of Coppell - Cottonwood Branch Pedestrian Bridge Hydraulic Study Comparison Table of Hydraulic ResHlts - Cottonwood Branch Ultimate (Fully Developed) Watershed Conditions, 2-Year Probability Flood Existing Model Modified Existing Model Proposed Model Water surfaec elevations & Water surfaec elevations & Water surfaec elevations & Channel Velocities Channel Velocities Channel Velocities 4 II. PHOTOGRAPHS • r . d 4r I i f � f- , 1,�, 1 � � } ^: :. , y / -ice ,, , �1 , • ,, 5- . � > ., j � . k g , ` � • . - } rte # s via ''s ,v,�*w j i - • T 4 7 ' i t . h .ar" :r -' ' n ter" +, / t �/ w •` 1 f , e , ' t f J __ r ;_, • �>. is a. • • •+}, �'"' :' Cottonwood Branch looking upstream from proposed pedestrian bridge location I a 'n,Sl1 ' + -7-11111.k4 {^ r i 1 • (04 x 1 1{t3 I + ve t � t �! #;t , f + l �`iN� �!� 1 '' >i ; ",,,,ill y� ` ? j ' � �i ``�3 t ...‘;!'..1:-,i v i „ '. i . - hi I , 1+S 1•ii :? \ - :' iG - ” t Y • X p: 4p • ' , � .•, l '• j o y• # 1. ` `� ,. ,� * \ j .' { _ 1�1 + ∎ ' � ' s • Ili% � k - 9 a 1" ,•,:, • \.. ,� �' r . . �. a ; ,o' \y{ 'eft ! ; ' "" x -; . -3 ms s. +..- , Cottonwood Branch looking downstream from proposed pedestrian bridge location. Note existing temporary wooden bridge. III. FORMS FLOODPLAIN DEVELOPME~NT PERMIT CITY OF COPPELL, TEXAS PERMIT NO. NAME OFPER~IITFEE: City of Coppell Parks Department ~heabovenamedpermitteeappliedforaFLOODPL4INDEVELOPMENTPERMITon January 21 , 2000 The application has been reviewed by the FLOODPLAIN.aDMINISTRATOR and it hat been determined that the proposed development ix located within an Identiftable Jloodploin of: Denton Creek The FLOODPLAIN ADMINISTRATOR hat reviewed plon~ and tpeclficaqoat o/the proposed development for conformance with the development s~ requlrod by COPPg:t'l. Floodplain Ordinance 194639. You are hereby authorized to proceed with the following described work.. Cottonwood Branch To maintain compliance with the development standardx of COPPt~l'l. Floodplain Ordinance I94639 and to e 'laninate or ~ .flood damage potential to the proposed development, you a~e hereby directed to ¢oattruct your proposed development In accordance with the following speclal pro~l~lont: ( ) Compliance with all requirementx of Coppell Floodplain Ordinance 194639 including but not limited to: For residential structures, the inwest floor (lncl_~Lng basement) mutt be elevated to two (2) feet above thc l O0-year base Jlood cloatinn or one (l) fout above ultimate condition whlohevcr lt Mgher. Certif;caMon of the lowest floor tnutt be tubmitted from n regf. vtered profettloanl engineer, arcMtect, or land surreyar. For non-retldentlal ~ractures, the lowctt floor (t-,t,,~ng ~ement) ~t ~ e~ed or ~f~ ~ ~o ~1 feet ~t ~t l ~ye~ ~t ~ t~n or one (I) f~ ~ve -~ ~-~n w~h~er h ~her. ~a~n ~ ~tr f~n mt~td ~ ~t ~t ~ ~ ~ t~d~m a u~d p~fest~ en~eer or For fill activities, the permtttee mutt submit cerdf c~,-Van from a regtvtered professlonal engineer or land sur~eyar that the level of thc compacted j~l material ix at or above the elevation of the Bate Flood. (X ) Certified copy of all final plans or At-Buiit Drawings mutt be submitted to the FLOODPLAINADMINISFRATOR. Provided by City of Coppell Parks Department (separately) ( ) OTHER PROVISIONS: Acknowledgement of Come'ons by Ptrmittee · t~gnature of FLOODPI..41NADMINiSTF.4TOR IV. EXHIBITS WIS __ ~~/I PROPOSED ~,,_ ~ ~ s ~ ~ EXHIBIT 1 LOCATION MAP J' "` ,r' ` J J' .r -` `yY' r lr +`'" ,� - ''J' •- �..� - ` f "� �:.-� _. -�� 1 �- C 0 e N, ____--i ----------- ......„ ..,...,, ...„...-- .... „di,. - .,_ ....„,,,,",,,,,,,, , ,,, p. _______........_______ _________ ____., .r-- g.- ♦ !'r r . !qr , 'Aso:" s' f - - -' --- i j r' ^'' � i'� ' ' ter ` ~ `'' ^^ \ 1. - + � r + J �,. r i � f' � ,i ' if , a r +" r 100 Y R FLOOD PLAID - J J . ' - r l J l _ ULTIMA:T L- ANDUSE i r , 9,c . , r� = o� - — �. . .. PR I' 4 SE PEDE( / , L.AON i ' �, - r 1 `' j..' J r * ' rte .. - i 1 / - ° C T`T O ' O0 BR L , � "" 1 / '� 1 � ' ; ' , t ' � � _' ; : 2-'':. � R - FL PLAIN 1- f ULTIMA D USE i , 0 1 1 ; i J, t - "_-�`' -� \.. Y r J +`' J "^ , .' 4 a • ' \ !,/ J i � '/ del / e t i 1 r :::::::10:,_77,,:711.: ,,,,'"---' ' \ :, \ \ \ gii, \ \ \ I , r \ rah ./ ^ ^ � ^ r :>,1>:•7`....:1--><>,.-.1<: ti \: 1 ..' + 1 \ 1 ^ r J • J + �- - - EXHIBIT 4 ,.......,. . .. ..._,, � Y, 1 _ � - PROPOSED PEDESTRIAN BRIDGE ...„...,. ,....._ . -; r r''� t f` SITE PLAN 1 / �i--� ?- DENTON CREEK /COTTONWOOD BRANCH _ PEDESTRIAN BRIDGE STUDY 4. ` .�, `, `, ` COPPELL LEISURE SERVICES DEPARTMENT CITY OF COPPELL, TEXAS OOP r ) L / 't ::: Halff Associates Elm ENGINEERS . ARCHITECTS . SCIENTISTS . PLANNERS . SURVEYORS • \ j ' t r 1— ' DESIGN DRAWN DATE SCALE NOTES FILE NO. \ '' —` r • i ! ,. . ` DAD DAD . 2000 Y 1 ' = 2 00 ' 18109 I09— PED-cw X 0Z69~ ~ ~ 00~8~:: : : , )OOgl;' i : Elevation (ft) 'PROPOSED BRIDGE' DEl~rrOl~ TAI~ RO~D rn x m Elevation (ft) 01 00'1 0 0'1 0 O_ TAP V. APPENDICES APPENDIX 'A' Modified Existing Denton Creek HEC-2 Model - (DC-me.dat) 0 ~o 2 S o © o o o~oOoO o ~ oo~ 0 o o ~go~ o 8 o o o 0 o ~ ~ ~ ~ o o ~ ~ o °o o ~ oooo H ~'0o o o o oooo o o o © oooo · o~oo oooo o o ~ 8~8© 0 ooo 8 ~oo 8 0,*4 ~ OOoOg g ~oo oOOO o ~ ~oo o o ~ o© ~ ~ o o © o ~ ~) ~:~ oo ~ooo ~oo 0 ~ooo D ? ~oo ~ooo o o 0 0 o ~ooo o ~ o oo~o ~oo ~oo o o Oo ~oo o~oo ~oo o o o o oooo ~oo LnO0o o ~ o~oo ©~oo 8002,` o~oo ~oo ~oo oo~ ooo~ ooo~ ooo oo~ ooo ooo o o ~ ~o© ~ o z zom o ,,z z~ o o o o oooo Ln U g o© g o oooo ° >> oooo o o oooo o o o o © OO~o o 0 0 U o ~oo o o o o o o 0 ~oo o o S 3 o o o o ~ oooo o o ~ .m °© o ~ o ~ 0 ~S8©o 0 o o o Z ooo ~oo ~oo ooo o o ~oo oo ~o°~°~o °8~8¥ oo oo o .m© 0 H OH o o H °~ ° ~ o~ oo oo oo o o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ©o oo oo oo oo oo oo oo oo oo oo oo o g .......... oOoO .......... oo oOg .... oo oo oo oo oo oc) oo oo oo oo oo ~- oo o oo oo oo oo oo oo oo oo (Do oo oo oo oo C~ oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo 0 oo o oo oo oo oo oo oo oo oo oo oo oo oo oo ~ ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ., oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo ,. oo oo oo oo oooo oo oo oo oo oo oo oo ~. ao Sa oo ~ oS oo oo oo oo 0 o oo o oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo ~$ ~o oo oo oo oo .......... ~° g g 0 ©° oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo o ~ oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo o ~ oo oo oo ~ m~ ~ oo oo ~ ~ o gg ggoo ....... oo oo og gg g o oo oo oo oo oo oo oo o oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oO oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo o oo oo oo o oo oo oo oo oo oo oo oo °! oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo ................. SS go go oo oo oo oo oo oo oo oo o o o oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o~ oo ~ 88 oo 8 ......... ~ oo o~ o~ oo o o© oo oo ©o oo oo oo oo oo oo oo oo oo oo oo oo oo o© oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo c>o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo o oo oo oo oo oo ~ oo oo SS §~oo .... oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo o oo oo oo ~ oo oo oo oo oo oo oo oo H oo ~ oo oo oo oo oo oo oo oo ~ oo ~ oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo ~o oo 0 oo ~o ~o ~ oo oo oo oo oo oo oo oo oo oo oo 8 .... o oo 88 88 oo ........ o oo oo oo ~ oo oo oo oo oo oo oo o So 88 8° 8S .............. o ooo OoO oo °o o o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo o o 0 oo oo oo o oo oo oo oo oo oo oo oo oo oo oo ~~ oo oo oo o o o oo oo oo oo o oo oo oo oo o oo oo oo oo .......... ~ ~ oo ~ oo oo oo oo oo oo ~ oo ~o oo oo oo oo oo o ~ ~o oo o oo oo oo oo oo o o~ °© ............. °© o 0 °i oo oo oo oo oo oo oo ~0~ oo oo oo ~ ...... oo© o°°o o°o° oo°° oo°° °© oo oo oo oo oo oo oo oo o ooo oo~ oOO ~ ....... o Cz, o oo oo oo oo oo oo oo oo oo oo 0 oo oo oo oo oo oo oo ~ ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ...... oo oo So oo §~ ~§ SS oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo (Dc) oo oo oo oo O~ oo oo oo oo oo o© oo o(D oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ©o oo ~o oo oo o oo oo oo oo oo oo oo oo oo oo oo o 0 oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ ~ °° oo ~ oo oo oo oo oo oo oo oo oo oo oo oo o© oo oo oo oo oo oo oo oo oo© o oo Co oo o oo oo oo oo oo oo Co oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo OO oo oo oo oo ~ o~ o~ o~ o~ o~ oo o~ o~ o~ o~ o~ o~ o~ oo ~ ...... o .... o oo o~ §~ oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo o© oo oo oo oo oo O0 ~ ~ ~ oooo oo 0000 O0 oO O0 O0 O0 APPENDIX 'B' Modified Existing Cottonwood Branch HEC-2 Model - (CW-me.dat) o o ° o H o© oo o o o o o o~ oo 0 0 o© oo o o o o ~g o~ 0 o o o+ o o.oo o.oo oooo o oo~- ooo. ooo. o°d~~ 0 G o o og§~ gg~ ........ o o o o o oo o ~oooo o° o ~ o 0 o o 0 °°g4 0 o o o o o o ~ oo 0 o o o o 0 oooo o o~ o . o o o o o ~ ~ °°~o~ o g~ o 0 ~ ° o o ~?o°°o o 0 H oo 0 o o oooo~ oo o o 0 H o ~ g ,~go o~© oo OoO~oO ooo~® ~.goo o o 0 0~o0 §oo~ o o U 0 U o~ g o o o o o o rq o o >> oo oooo o.o oo o . o o ooo . o.o o oo o°gg© oo o o o o o o o o o o o~OoO ........ go o o 0 uo ~§oo~ oooo oooo oooo oooo o o ooo ,J o E oo~ oooo o ~ o ~ o o oooo o~ o° o ~ o.~ o g o o 0 °~ o ~ °°°~ 0 z o o o~o~ o'~ [~ o ,~ o . o oooo o ~gg 0 OoO o g ~ o~ o ~ ........ o 0 o o ~ ~jgo ~ ,oo ~ ,oo o -oo o H ~go~o og .~ g 0 ~ o mooo o o o o o o ~ ............. ~o ~o o~ o~ ~ oo o oo oo oo oo oo o~ oo oo oo oo oo oo 0 oo oo oo oo oo o oo oo Z oo oo oo 0 oo o oo oo oo oo oo oo oo oo oo oo oo ~ oo oo o~ oo oo ~ oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo o oo oo oo oo oo .................... g .... oo og go oo g§ §§ ...... o oo oo oo oo oo oo oo oo oo o oo ~ oo o o oo oo oo oo JO O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 )0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 )0 O0 O0 O0 O0 O0 O0 0 0 O0 O0 O0 O0 0 oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo g~ %~ ~ ~ ~ ~ o~ oo oo o~ oo oo oo o~ oo ~ ~ ~ ~ ~ o O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 0 oo oo oo oo o o oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo 0 oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo o ~ oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo o 0 oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo 0 o ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo Z o ~ oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo ~°o ~° oo oo oo o oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo o o oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~o ~o 0 oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo ~ oo oo ~ ~ ....... ~ ~ ~ ~ ~ ~ ......... 0 O0 O0 oo OO OO Oo oo OO OO 000 000 oo ~ o O0 O0 OO OO oo OO O0 oo oo o o O0 O~ ~o oo oo oo oo oo o o oo oo oo ~oo oo oo ,o oo oo oo oo oo oo oo oo oo oo oo oo )o oo oo oo oo oo oo oo oo oo oo oo oo )o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo 0 oo oo oo oo oo oo oo oo ......... °© °© .... g OoO oo oo (po oo o o oo o o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo 0 oo oo oo oo oo oo oo ~ ~ oo oo oo oo oo oo oo oo 0 0 o ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ ~o oo o oo oo oo oo oo oo oo oo oo oo oo oo .... o ....... o ......... ~§o o~ o o~ .... oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ ~o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo o oo oo oo oo ~ oo oo oo oo ~ oo oo oo oo ~ ~ oo oo oo oo ~ §o oo §~ oo o o oo ~ oo ~ ~ ..................... g§~8 o oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo ,~ r~ ................... %~o °8o oo o ~ oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo ~ ~ oo oo ~ ........ 8 8 .... o o oo oo oo oo oo oo oo oo oo oo o o oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo · oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o~ oo oo ~ oo oo oo oo oo o~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ...... go 8 ..... oo oo oo oo oo oo oo oo o© OoO ............ oOO o oo oo oo oo oo oo o ~ ...... go §§ oo ~o oo - oo oo oo o oo o oo oo oo oo oo oo oo oo ~ oo oo oo oo ~ oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ ~ o~ oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo ~ °° oo oo ~ ~ oo oo oo oo oo oo oo ~ °° oo oo oo oo oo oo oo oo oo oo oo o o ~o oo oo oo oo oo oo oo oo ~ oo oo oo o oo oo oo oo oo oo oo oo o o gg g~ ............ oo oo oo oo oo oo o oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~o oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo o oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o ............. §§o o oo oo oo oo ~ oo oo oo oo .. oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo ~o oo oo oo oo oo oo oo oo oo o oo o oo oo o~ o~ oo oo oo oo oo o ~ oo oo oo oo °° oo o o oooo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo o oOO °o ............. °© ~ o o oo oo oo oo oo oo · - oo oo oo oo oo oo oo oo o ~ oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo o g ~ oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo (Do ) oo oo oo oo oo oo oo o o o o~ ~oo o o§ §§ §~ .... oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o o .................. ~§ oo §o ° ~ °° oo oo oo oo oo oo oo oo oo oo oo ~o oo oo oo oo ~o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~? ?~ ?o o ..... oo oo oo oo oo oo oo go g§ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ ~ ~o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oOo© ...... oOoo OoO .................... oo oo oo o oo oo oo oo oo oo o o oo oo oo (~ oo oo oo oo oo oo oo oo oo oo oo oo o o oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ °~ oo oo ~ oo oo oo oo oo oo oo oo oo oo oo o oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo o o oo oo oo oo o o o o o o o o o o oo §o ~o o§ og ...... ~ ~ o o o o oo " o~ oo oo oo oo oo oo oo ~ o oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo 0 oo oo oo oo oo oo oo ~° o o ~ oo oo oo oo oo oo oo oo 0 0 ~ O0 0 O0 0 O0 O0 cD o o ooo oo o oo o oo o o o o o ooo oo °o oo o oo oo o o o ooo oo oo o oo oo 5~ooo 5~o oo O0 O0 ~ O0 O0 0 O0 O0 0 000 0000 o oo ooo oooo o EXHIBIT 7 Modified Existing Cross-Sections - Denton Creek C) o 0 0 o (J~) uo!je^el3 ? ? 0 0 0 0 0 (I~) uo!~^al3 (~) uo!$~^el~ o o o 0 o 0 04) uo!l.^al3 (~) u0!~e^el3 oo (~) uo!~e^al3 (U) uo~le^elD (~) uo!l~^el~ ~u_ (B) uo!le^el~ o C) (~1) uo!ie^el3 ! ! -I II I ! (ii) uoI J~ABI3 / / I ! 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suo!looS-SSO~D lopolN posodmd 6 i,I~tlHX'LI 0 q3ueal~t pOOA~UOll03 - suo!looS-SSm3 IoP°IAI Pos°d°~d 01 APPENDIX 'C' Proposed Denton Creek HEC-2 Model (DC-prop.dat) 121 0 0 ~oooo~oooo~o~~ o~ ~ ~ o ~°°~ ~ ~oooo~oo.2~oo o ~ooooo~§oo ~ ~ ~o o o o o~0 oo o c~c~c~ ...... ~ .......... 5 ..... ~ "' ~~ §~ooooooo §~ooooooo 00~0000~0 0 ~ 00000~00 0 g ~ ~R~ ~ oooooooo ~ oo ~ o o o o o o o oo ~ o oooo~ o~ooooooo .. o~ ....... g o ......... oooooooo g ~ ..... oo ~So ooooooo~¢ ~ ............... o ~oooo :~ooooooooo ~ 0 u u ° 0 o o o o ~ o ~oz~o~o' o o oooo ou ~ o.o o §eooo o oOO~o o~Oo°4 oooo g o o ooo0 ~ ~ ~R°° oO o o oOOg~ oo ~o ~ oo ~ 8 H o o o o o o o 0 o o , ~o© o z oO~O ~ ~ oo~§ g ~ o ~ oo~ o o o o oo~ oo~ ~d§° oo~ o o o o o oOO~~ o© g§goo g o o ~°~8 o§ ~ §o 0 ~°o°o. o.o o o ~0~oo 2~oo ooo~ oO~ooo o o~ 0000 ~,~ o oo~g 2:0 §~g~ S~o HO00 g~oo~ oo~ oo~ oo~ OoO~ . oo 0000 0-0 0 oo o o o f~ o . o o o ~ooo g 0 oo o o o o o o oo~ ~°~io ~ooo o o o ~o ~o o oo~ o o 0 ooo~ o o§ g~gg ~ooo o~o,~ ~o "~§o ~° .'4)o ~ ~o~ o ou ~ oo~ # 0000 o o o o~ o ~ooo~ o o o o o o o o o o o o o o oo oo oo oo oo o o oo oo §§ oo o § §~ oo oo o§ oo O0 O0 0 O0 ~ ~ §§ oo oo oo §~ O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 oo OO oo oo oo oo oo o oo oo oo oo oo oo oo ~ 0 0 0 0 0 0 0 0 0 0 0 0 O0 O0 oo oo oo oo oo §§ oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo o oo oo oo oo oo oo oo §§ oo oo o oo oo oo oo oo oo oo §~oo°° o o oo §o° o° ~ ~ z oo oo o o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo §§ oo ~§ oo oo §§ oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo o o o o o o o o oo oo oo oo oo oo oo o~ oo o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo §§oo°° oo°° oo°° ~§ oo oo O0 O0 O0 oo §§ oo §g oo o ........ o oo oo oo oo oo O0 OO oo oo oo O0 O0 oo O0 oo ~ O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 oo OO O0 O0 oo OO OO oo ~ §§ oo oo oo oo O0 O0 O0 O0 O0 oo §§ oo §§ oo §§ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo O0 O0 O0 OO O0 O0 O0 O0 O0 oo oo oo ~ O0 O0 O0 OO oo ............ oo oo oo oo oo oo oo oo oo oo oo oo oo §§ o o o o o o o o ~~ oo oo oo oo oo oo oo oo oooo oo o o o o oo o 0 o o o o o o o o oo ° ° o o °° o o o° o o o o o o o o o o oo oo oo oo oo oo oo o°o0 oo oo oo oo oo o ~ oOoO ~°°~ .o.o oo oo oo oo oo oo oo oo oo oo oo §§~°° ~§ ~§oo°° §§oo°° §~ oo oo oo o O0 O0 O0 0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 0 O0 O0 O0 O0 O0 0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 0 ~ o o o o o o oo oo o o o o o o o ...... oo .... oo oo oo oo oo oo oo §§ oo oo oo oo o o oo oo g§ §g oo oo oo oo oo oo g§ o o oo oo oo oo 0 oo oo oo oo o OO oo oo 0 O0 O0 O0 O0 0 O0 O0 O0 O0 0 O0 O0 O0 O0 ~ ~~°° ~ oo 0 O0 O0 O0 O0 0 O0 O0 O0 O0 o oo ~ oo ~ o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo OO oo oo oo oo oo OO o ~ oo oo §§ oo oo oo oo oo oo oo oo o oo oo oo oo oo oo ~ O0 O0 O0 O0 O0 O0 ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ 0 0 0 0 O0 0 0 0 0 0 0 0 0 O0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ~ oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo OO oo Oo oo oo oo OO oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo g oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 oo oo oo oo oo oo oo oo oo oo oo oo oo 0 oo oo oo oo oo oo oo oo oo oo oo oo oo ~ O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 o o o o oo o o o o oo o C) o o o o o o o o o oo o o o o o o o o o o o o o OH C) o o o o o o o o o o oo o o o o o o o 0 0 0 0 0 0 0 0 O0 O0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O0 0 ~ 0 0 0 0 0 0 0 0 O0 O0 0 0 0 0 0 0 0 U o o o oo o o o o o o o o o o ~, oO§ oo oo ~o~o oo oo oo o o o o o o o o o o o o o oo o o o oo o o o o oo oo o o o oo oo oo o oo oo oo §§ §§oo°° 0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 O0 ~ §§oo°° §§oo°° ~§ O0 O0 O0 O0 O0 O0 O0 oo oo oo oo oo o §§ oo oo §§ oo oo 00000000000000000000000 00000000000000000000000 ooooooooooooooooooooooo oo o oo oo o o ~ ~ ~o >,- o~ ~ o oo ~ ~ o APPENDIX 'D' Proposed Cottonwood Branch HEC-2 Model (CW-prop.dat) o o oo~§ .... Eoo= o 0 ~ Cz, o o o ~°o°° 0 fl o .§~ ~ · ~ :~ ~o o oo oo~ §~.§oo o 0 b ~o 0 o o o o ~oo o o o o ~ o~o~ oo o o o o § o o o 0 o0o oO~.~o oo ?go ~o o o~o ~o~§~ o ~go© °~ go OOo~ o .~ 0 H oo oo oo OMO o o o o~ o ~ ~ ~oo o oOOoO~ ~ ~oo ~ o°° oo~ o o o oo~ o~ o ~ ~.~o oo~ ~.§o ~D 8 H O~o© z ~ o o° 0 ~ o ~ g oo~ oo o o o~o.~o oog~ ooo ~ ~ o~O. ooo g~oOoo o o o° 0 ~ o o o o o §§O~o o~ o~~ o o° ~g .oo ~o°o°~ . o~§§~ · o ~ o~§ oo o ~ o 0 o o o ° ~ o§ o o o o o o ~° o ~ o o o . o o (N o o o o o 0 o 0 oo° 0 o S ~ g ~o o oo o° 0 ~ o~o~o ~ ~ oo~ o o oo~§ ~§o~o oo~ °o o o J o 0 o oo~ o 0 o~Oo~ oo o 0 oo~ o ~§~ o o° °.o°,j o ~ oo o o o ~ ~ ° ~ ° o o °© .... oo oo oooo o o o o o o oo oo oo oo oo oo ~~ ~ ...... §~ oo oo oo §o o§oo°°o°~ oo°° ~§ oo°° ~§ ~ oo oo oo oo oo oo oo oo oo §§ oo §§ ...... go oo go ~ .... oo §§ oo §g oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o ~§ oo ~o oo ~ oo ~§ oo ~§ oo §o oo o oo o oo oo oo oo o oo ..... ~o oo ~ .......... g~ oo o oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo ~ ~ oo ~ ....... ~ oo o~ .... ~o ......... o oo oo oo oo oo oo o ..... §§ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o ....... § oo ~§ oo §§ oo §~ oo §o oo ~ ~ ~ ~ .... ~ ....... °! ~ oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o § oo §§ oo oo S§oo°° §§oo°° §§oo°° §§ oo °§oo°° .............. ??o .... oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo ~ ~ ..... o ~ ~ ~ oo ~ .... o§oo §§oo ~§oo §§ ~ o°§ oo .... oo §~ §~ oo°° ~§ ~ ~ ..... ~ oo o~ o ...... ~ ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo §§ oo ~ .. ~ . o o o °°o o oo o go° o ~ m o oo o~ ...... §~ .... oo o oo oo oo oo oo ~ oo o§ oo ~ oo § ..... oo §~oo°° g§ o o o o oo°° §Oooo°° ~§ oo ~ ~ oo oo oo oo oo oo oo oo oo ~ ~X~ §§ ~§ oo §§oooo oo ~ ~ ~ .......... o §§oo°° §§oo°° §§oo°° o°§ oo°° §§oo°° §~ oo ~ ~§o o~o o~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo §§ oo §~ oo §§ oo oo oo §§ oo §§ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo ~§ H §§oo°° ~§oo°° §§oo°° §§oo°° §§oo .... §§ .... oo ~§ ........................oo ~ .... oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo ~ ~ oo oo oo oo ~ oo oo oo oo oo oo oo oo ~ ~ oo oo Oo Oo O0 O0 O0 oo O0 Oo oo O0 O0 oo oo O0 oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ....... § oo o§ .......... §§ ...... oo oo oo o oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o o [ §§ oo §§ §§ §~ §§ 8§oo oo .... oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo 0 oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo .... §8 oo o8 oo ~§ oo o§ oo ~§ ...... oo oo oo o oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo o o o o oo oo oo oo oo oo oo oo oo oo oo oo oo oo o o o o o oO§ oo o o o o o o o o o o o o o o o o oo ~ oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo §oo ~ ro c.~ (xl o o o o o o o o c* o o o o o om::] o o oo oo oo oo oo oo oo oo oo oo oo ........... § o§ oo ox oo oo oo §o oo §o oo §o oo §o oo §o oo o §§ §o 8o oo oo oo oo oo oo oo oo oo oo oo o§ oo §§ o§ oo §2 oo .... o oo oo oo oo oo oo oo oo oo oo oo o2 oo §§ oo §o oo ~ oo oo o oo oo oo oo oo oo oo oo oo oo oo oo ~§ oo o~ oo §o oo oo o oo o oo o o o o o o o o o o o o §2oo°° §§oo°° ~§ oo°° o°§ ~ .... ~oo oo OoO oo ooo o oo oo oo oo oo oo oo o oo oo oo oo oo oo oo o oo ..... § oo §§ oo oo oo oo o oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo o oo oo oo oo oo oo oo o o oo gE E§ §§ E°o oo°° §°o gE °°oo §E .... ~o o§ oo E§ oo o§ oo o§ °° E§ oo oo oo oo oo oo §§ §Oo oo°° §§ oo §~ oo §o o~ ~ §o o§ oo §o oo o o oo o oo oo oo oo oo o~ oo oo oo oo o oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ .............. §§ oo ......... ~ .... ~ ~ oo oo oo oo oo oo oo H oo oo oo oo oo oo oo oo oo §~ oo §o oo o§ oo ~o o~ oo oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo ~ oo oo oo oo oo oo oo §§oo°° §~oo°° §~ o o §~oo°° ~Oo oo°° §§ ~ ~ oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o ............. §§oo°° §§oo°° ~§ o oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo o oo ~o oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo o oo oo oo oo oo oo oo oo oo oo oo ~ oo~ o~ H oo oo oo oo ....................... o° oo oooo oo oo oo oo oo oo oo oo oo oo oo .................... §~oo°° §§ oo°° ......... ~ o~ o~ o~ o~ o~o~ §~ o~ oZ oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo o§ §~ oo § ....... oo o oo o oo oo ~o oo oo ~ oo ~ ~ ~ oo o oo o ° oo ~ooo §~ oo §oo ~§ .... §§ ~ oo oo o o oo ~ ~ o~ ~ 88 88 oo oo o ~ oo ~ooo oo oo oo ~ ° oo oooo oo oo oo o Oo o0o0 Oo O0 O0 0 0 O0 0000 O0 APPENDIX 'E' Digital Input Data Files on Disk