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CF-Andrew Park FS-SY 870921
PAWA'Winkelmann & Associates, Inc. September 21, 1987 2 Ms. Maryetta Cunningham Natural Hazards Program Specialist Federal Emergency Management Agency - Region ¥I Federal Center 800 North loop 288 Denton, Texas 76201-3698 re: Improvements to Andrew Brown Community Park Denton Creek Floodplain - City of Coppell, Texas Dear Ms. Cunningham: The City of Coppell desires to make improvements to its existing Andrew Brown Community Park, which is located in the common floodplain of Denton Creek and Cottonwood Branch, just west of Denton Tap Road. Improvements will involve minor cut and fill operations (within 3 ft above or below existing grade) for proposed playing fields. Concession buildings may also be placed, which will be floodproofed or considered as enclosures. The proposed actions are partially within the designated regulatory floodway of Denton Creek. However, the impacts of the proposed project have been analyzed and found to' have no effect upon 100-yr water surface elevations or floodway widths. The following sections briefly describe the proposed project and its ramifications. Maps of the vicinity and the specific site details are also provided for clarification. BACKGROUND & STUDY APPROACH The existing conditions HEC-2 encroachment model for Denton Creek is based on the currently effective l~lood Insurance Study (FIS) computer model. Field surveyed cross sections have been added, based on data supplied by Ginn, Inc. Section extensions were supplemented by aerial topographic information with an original scale of 1 in = 200 ft, and are plotted in Appendix 3. The proposed park improvements are located in the right overbank area of Denton Creek, from stream station 327+25 to stream station 342+00. In the existing conditions scenario, the Manning's "n" value assigned for the right overbank through the project reach length was 0.055. 12660 COlT ROAD, SUITE 200. DALLAS, TEXAS 75251 · 2141661-9406 Ms. Cunningham, 9/21/87, Page 2 of 3 The existing conditions HEC-2 encroachment model of Appendix 1 is based on the principle of equal conveyance reduction in both overbanks, based upon the Method 1 and Method 4 options of the HEC-2 model. The results indicate floodway widths through the project site ranging from 110 ft at stream station 327.25 to 968 ft at stream station 342+60. It should be noted from this computer model that the 100-yr discharges vary between the natural profile and the encroached profile. This is due to the common floodplain with Cottonwood Branch that occurs in the natural profile for Denton Creek. In the encroached profile representation, the floodway determination procedure of the HEC-2 model is based on the placement of vertical walls on each side of the channel such as to optimize the target rise in water surface elevation. Thus, the channel sections of the two streams must be separated, and the discharge conveyed by each determined. This has been accomplished by way of a split flow analysis such that the energy grade line elevations of each stream are approximately equal, with their combined flow being equal to the total base flood discharge. EVALUATION The proposed conditions model for Denton Creek is included as Appendix 2 of this report. The geometry of the sections has been modified to account for the proposed park improvements in the right overbank of Denton Creek. These modifications are shown on the cross sections plotted in Appendix 3. The Manning's "n" value has been lowered from 0.055 to 0.050 to account for the more manicured condition of the playing fields in the right overbank. As with the existing conditions model, the discharges vary between the natural and encroached profiles due to the functioning of the split flow action between Denton Creek and Cottonwood Branch. Comparison of the floodway widths and encroached water surface elevations presented in Appendices 1 and 2 indicate no adverse impacts of the proposed park improvements. Floodway widths in the proposed conditions model are less than or equal to those of the existing conditions model. The encroached base flood water surface elevations also compare in a similar fashion. Ms. Cunningham, 9/21/87, Page 3 of 3 CONCLUSIONS & RECOMMENDATIONS The proposed improvements to the Andrew Brown Community Park within the City of Coppell, and partially within the regulatory floodway of Denton Creek, present no adverse impacts upon the floodway conditions. Regulations of the 44 CFR Parts 59, et.seq, as administered by the FEMA state that, *'Once the floodway has been adopted, encroachments, including fill, new construction, substantial improvements, and other development within the adopted floodway that would result in any increase in flood levels within the community during the occurrence of the base flood discharge is prohibited." Conditions and Criteria for Floodway Revisions, (FEMA, August, 1984). Documentation is hereby supplied illustrating that no increase in flood levels during the occurrence of the base flood discharges will result from implementation of the proposed improvements. To the best of our knowledge, the attached data should suffice for FEMA review of the proposed project. If additional data are required, or if you have any questions, please advise. Sincerely, PAWA-Winkelmann & Associates, Inc. Carl V. Anderson, PE Vice President attachments: Appendix 1 - extended FIS HEC-2 encroachment model Appendix 2 - proposed conditions encroachment model Appendix 3 - cross sections Appendix 4 - maps of project area enclosure: grading plan cc: John Karlsruher, PE - City Engineer with Ginn, Inc. Shohre Daneshmand - City of Coppell APPENDIX 1 DENTON CREEK CITY O1~ COPPELL, TEXAS EXTENDED FIS HEC-2 ENCROACHMENT MODEL * NATER SURFACE PROFILES * VERSION OF NOVEMBER 1976 * UPDATED FIAY 1984 * II~I-PC-XT VERSION * RUN DATE Bg/21/87 TIIflE 14:$$:53 * U.S. ARMY CORPS OF ENGINEERS * * THE HYDROLDGIC ENGINEERINO CENTER * * 6B9 SECOND STREET, SUITE D * # DAVIS, CALIFORNIA 95616 * # (916) ~-21e5 (FTS) ~+8-21~5 * ~9/21/87 14:35:54 X X XXXXXXX XXXXX X X X X X X X X X X~O000( XXXX X X X X X X X X X X X X XXXXXXX XXXXX XXXXX X X X X)O00( X X X)(X)(XXX PAC~E 1 HEC2 RELEASE DATED NOV 76 UPDATED [~AY 1984 ERROR CORR - MODIFICATION - 58,51,52,55,54,55,58 IBM-PC-XT VERSION THIS RUN EXECUTED 89/21/87 14:33:54 C T1 T2 T3 DENTON CREEK - F.I.S. UPDATE DENTON CREEK - FIS 1B~ YR DISCHARGE PROFILE DENTON CREEK, TEXAS Jl ICHECK INQ NINV J2 NPROF IPLOT PRFVS 1.B~B .BE8 -1.~ 33 (54785 - DNEXTET) IDIR STRT METRIC HVINS Q NSEL FQ ~. .~8080 .~8 .B ~. 45G.148 .B~8 XSECV XSECH FN ALLDC IBN CHNIM ITRACE VARIABLE CODES FOR SUltRY PRINTDUT J5 LPRNT NL~ISEC ********REQUESTED SECTION NUMBERS******** .BOB .B~ ~T 8.~ 16~.~ ~59~.~ NC .~8~ .8~ .~8 NH 5.~ .~6~ 2319.8~0 NH 54B~.~ .~0~ .~ ET .~ 2519.~Z 2685.~Z~ FEHA CROSS SECTION X1 2887~.~ 37.~E~ 2319.~ 6R 47~.~e~ 9~E.E~E 465.~ee 6R 465.~ 2~.~ ~65.~ GR 465.~ 251g.8~ 457.~ BR 457.~ 2521.B~ 457.2~ GE 451.5~ 2~7~.~ GR 459.3~ 52~.~ 459.5~ SE 459.3~ 468~.~ 459.3~ GR 469.4~ 521~.B~ 473.~B NC .8~ .~ .~e~ NH 5.8~ .~55 2~6~.73~ NH 51~.~ .~ ,~ ET .~ 2~g3.~ 24~8.~ 1 ~9/21/87 14:33:54 1495.~ 465.88B 1695.B~B 465.~8 1798.8~8 465.8~8 195~.~ 2~7~.~ 465.~ 21~.~ 465.~ 214~.~ 465.~ 21g~.~ 231g.~ 437.5~ 2397.~ 437.5~ 242~.~ 437.5~ 2443.~ 2521.8~ 454.7~ 258~.~ 437.6~ 26~.~ 436.3~ 263~.~ 275e.~e 459.3~ 281E.EEe 459.3e~ 3EIE.Ee~ 459.3~E 3Eg~.Ee8 327E.EEe 459.~Ee 33~.E~8 459.3~ 434E.Ee~ 459.$e~ 462E.Ee~ 485e.~ 46E.E~e 488~.ee~ 461.4~ 4gse.~oe 467.3eE 5EIE.EE8 54~8.8~ .~e .~ .~e~ .~8~ .~ .1~ .3~ .8~ .~ .~ .~ .~ .~35 2253.~ .855 2296.~ .835 2448.8~ .855 .~ .8~ .~ .8~ .~ 2.11~ .~ PAGE FEMA CROSS SECTIO~ X1 29618.8~8 $8.~ 2~6~.738 GR 47~.~ 52~.8~8 468.588 GR 465.~ 1~.~ 465.~ GR 465.~ 15~.~ 465.~ GR 465.~ 2Z0~.~ 465.~ GR 437.83~ 2168.~ 459.15~ GE 458.6~ 244~.~ 458.7~ GR 458.7~0 3~3~.8~ 458.7~ GR 465.3~8 49~.B~ 467.8~ NH 5.8Z~ .855 3445.18~ NH 71~.B~ .~Z~ .~ ET .~ 546~.8~ 3835.~ FENA CROSS SECTION X1 5~57~.~ 6~.~ $445.18~ GR 465.~8 21~.~0~ 465.8~0 GR 465.~ 26~.~ 465.~ GE 465.~ 51~.~ 465.~ GR 457.43~ 3445.18~ 438.25~ 8,9 455.9~ ~756.~8~ 459.8~ GR 451.4~ 3884.~ 455.5B~ 6~.8~ 466.80~ 7~.~ 465.~0 8~.~8~ 465.8~e 11~.8~ 465.8~8 12~.~8~ 465.B~ 15~.~88 465.~ 14~.~ 16~.8~ 465.~ 17~.~8 465.~8B 188~.8~ 465.~8 19~.~ 2~55.~ 455.6~ 2~55.~ 455.65~ 2~68.73~ 437.83~ 2132.~ 2253.0~ 46~.~ 2296.~ 437.4~ 2356.8~ 437.6~ 2389.8~ 247~.~ 458.7~ 253~.~ 458.7~8 265~.~ 458.7~0 279~.~8~ 3~7~.~8 458.7~8 314~.~8~ 46~.~ $21~.8~8 464.~80 3248.8~ .835 3642.39~ .855 $756.~ .~35 585~.8~ .855 .~ .~ .8~ .8~ .e~ 2.11~ 22~.~ 465.~ 23~.~ 465.~ 24~.~ 485.~ 25~.~ 27~.~ 465.~8 28~.~0 465.~ 2g~8.~ 465.~ 3~.~ 32~.~ 465.~ 33~.~ 465.~ 34~.~ 465.~ 3~45.~ 5522.~ 438.23~ 3558.~ 459.35~ 3642.$98 459.5~ $7~8.~ 3778.~ 459.8~ 3812.~ 456.7~ 585~.8~8 458.28~ 587~.~Z 5924.~Z0 459.2~ 394~.~0~ 46~.~ 395~.~B 46B.~B 4~2~.~ SR 46~.1B~ 5$~B.BGB 46~.1B~ 54~.~ 46~.8~ 55~.~ 468.~ 5517.~ 46~.8~ 56~.~8~ 6R ~6~.~ 57~.~ 46~.~ 58~.~ 46~.~ 59~.~ 46~.~ 6~.~ 46~.~ 61~.~ GR 46~.~ 62~.~ 46~.1~ 63~.~ 46~.4~ 64~.~ 461.~ 65~.~ 462.2~ 66~.~ GR 462.9~ 67~,~ 464.1~ 68~.~ 465.4~ 69~.~ 467.6~ 7~.~ 47~.1~ 71~.~ ~T 8.e~e 9~.~ 113~.~ 323~.~ NC .855 .~55 .~35 .Ee~ ET .~ 3487.~2~ 3737.~2~ .~ FEHA CROSS SECTION X1 3123E.Eee 36.eee 3387.e3~ 3837.eee &9 47~.~e le~.~ 47~.~0~ 11~.~e~ 6R 47~.~ 15~.~ 47~.~ 16~.~ 6R 47~.~ 18~.~ 47~.~0 1819.~ r~ 47~.~88 218~.~ 47~,~ 22~.~8~ GR 47~,~8~ ~213.~ 47~.~ 3234.~ 6R 438,558 3472.~8~ 438,55~ 35~8.~ 6R 438.1~8 3661.~0~ 4~8.5~8 3672.8~8 GR 46~.3~ 3869.~8 .~ ,~ 1 89/21/87 14=33~54 551~.~ 62~.888 478.888 478.888 478.888 457.196 459.488 .888 9688.888 1288.888 1834.888 2272.888 3388.888 3582.588 3788.888 13888.888 .888 .888 478.888 478.888 478.888 478.888 456.888 468,888 28378.888 .888 1388.888 1755.888 1988.888 2888.888 3387.888 3614.888 3888.888 .888 478.888 478.888 478.888 478.888 459.798 438.688 468,888 1488,888 1778.888 2888.888 3154.888 3387.838 3837.888 PAGE ~T 8.888 98.888 113~.888 3238.888 5518.888 g688.~88 13888.888 28888.888 14988.888 NC .855 .855 .835 .888 .888 .888 .888 .888 .888 ET .888 3417.588 3587.588 .888 .888 .888 .888 .888 2.188 FENA CROSS SECTION END OF THE ADDITIONAL PROOPOSED CHN~EL X1 32158.888 27.888 3488.888 GR 478.888 1888.888 478.888 GE 478.888 2288.888 478.888 6R 478.888 2658.888 478.8~8 GR 459.888 3188.888 468.888 GR 437.888 3448.888 437.888 GE 468.888 3525.888 461.588 988.888 478.888 478.888 478.888 461.588 437.888 958.888 1888.888 2328.888 2988.888 3388.888 3475.888 928.888 478.888 478.888 468.588 437.888 2888.888 2628.888 3848.888 3488.888 3489.888 478.888 478.888 459.888 437.888 447.888 .888 ~T 8.888 98.888 113~.888 3238.888 5518.888 9688.888 13888.888 19358.888 14988.888 NC .855 .855 .815 .~88 .588 .888 .888 .888 .888 NH 3.888 .855 3398.588 .815 3539.588 .855 36~8.888 .888 .888 ET .888 3428.888 3518.888 .888 .888 .888 .888 .888 2.118 58.888 463.888 478.888 478.888 FERA CROSS SECTION END OF PARKS OF COPPELL DENTON TAP ROAD .888 3688.888 2888.888 2438.888 3888.888 Xl 32288.888 36.888 3398.588 3539.588 58.888 58.888 BT 3.888 3388.888 465.888 463.888 3552.888 465.888 GR 472.888 988.888 478.888 1318.888 478.888 1788.888 6R 478.888 2281.888 478.888 2221.888 478.888 2222.888 GR 478.888 2618.888 478.888 2611.888 478.888 2635.888 466.888 478.888 478.888 478.888 .888 2188.888 2648.888 3848.888 3427.888 3585.888 .888 2288.888 2528.888 3858.888 ~ 461.18E 3E58.eEe 462.ee~ 328~.eee 465.~e~ 538~.~E~ 468.~Ee 5381.~E~ 461.5Ee 3398.5Ee GR 45~.E~ 3425.e~ ~6.5~ 3~$2.~ 463.Ee~ 3~32.~1~ ~63.~ 3434.99~ 445.~ 3~35.~ GE 435.Ee~ 3455.8~8 435.Ee~ 3475.e~8 445.E8~ 3495.~88 463.e~ 3~95.81~ 463.~e 3497.998 GR 446.588 3498.888 458.888 3585.888 461.588 3539.588 468.888 3558.888 465.888 3552.8B8 ~T 8.888 98.888 1138.888 3238.888 5518.888 9688.888 13888.888 19388.8~8 14988.888 ET .888 3428.888 3518.888 .888 .888 .888 .~88 .888 2.118 FENA CROSS SECTioN Xl 32238.888 X2 .888 .888 .888 .888 58.888 58.888 58.888 .888 .888 .888 1138.888 3238.888 5518.888 9688.888 13888.888 17968.888 3512.588 .888 .888 .888 .888 .888 ~T 8.888 98.88~ NC .855 .855 ET .888 3412.588 FEMA CROSS SECTION 89/21/87 14:33:54 PAGE X1 32258.888 25.888 3488.808 GR 478.888 1888.888 461.888 GR 457.888 228~.888 457.888 GR 457.888 2658.888 456.588 GR 461.588 3388.888 468.588 6R 437.888 3475.888 437.888 .888 459.888 455.888 468.888 437.888 461.588 ~T 8.888 98.888 1138.888 3238.888 NH 5.888 .858 1323.888 .855 NH 3858.888 .888 .888 .888 ET .888 2162.588 2272.588 .888 5518.888 9688.888 13888.888 17558.888 14988.888 1748.888 .868 2118.888 .845 2325.888 JACK R. DAVIS (J.R.D.) CROSS SECTION START OF THE RIGHT BA~ FILL AND IMPROVEMENTS X1 32385.888 33.888 2118.888 2325.888 55.888 55.888 55.888 .888 X3 18.888 .888 .888 .888 .888 .888 .88~ .888 GR 478.888 58.888 478.888 58.888 478.888 58.888 478.888 58.888 GE 467.888 58.888 466.888 135.888 465.888 228.888 465.888 1323.888 6R 461.888 1358.888 461.888 1375.888 461.888 1748.888 462.888 1825.888 6R 464.888 1975.888 465.888 2845.888 465.888 2118.888 464.888 2125.888 GR 468.888 2168.888 455.888 2175.888 458.888 2284.~8 445.~ 2218.~8B GR 437.788 2232.888 438.888 2239.888 448.888 2245.888 445.888 2253.888 8R 455.888 2281.8~8 468.888 2325.8~8 461.888 3858.888 .888 .888 QT 8.~88 98.888 1138.888 323~.888 551~.8~8 9688.B88 13888.888 11388.E88 14988.888 NH 5.888 .~58 1273.888 .855 1568.888 .868 1948.888 .845 2158.888 NH 3358.888 .888 .888 .888 .888 .888 .888 .888 .888 ET .888 1998.888 2188.888 .888 .888 .888 .888 .888 2.188 J.R.D. CROSS SECTION Xl $2725.~ $1.~ 19~.~ 215~.~ ~R 47~.B~ .~ 465.~ .~8~ ~R 461.~ 1285.~ ~61.e~8 1568.~ GR 463.~ 194~.~ 46~.~ 196~.~ ~ 44~.~ 2~25.~ 43g.~ 2~3~.~ ~R 445.~ 2~7~.~ 45~.~ 2~8~.~ 455.8~ 438.28~ 455.8~ 468.8Z~ 52~.~ 1273.~ 1592.~ 1981.8~ 2~4~.B~B 2~9~.88~ 2435.~ 42~.~ 461.~8~ 453.~ 458.~ 439.~ 46~.e~ 459.6~ J.R.D. CROSS SECTION Xl 33145.~E~ 49.~ 1752.B~ 196~.~ 385.~e~ 298.~8~ 6R 47~.~ .~ 465.~ .~ 465.~ 13~5.9~ GR 45~.33~ 1315.~ 46~.55~ 135~.1~ 46~.64~ 139~.~ GR 451.75~ 1515.~ 452.~ 1545.~ 453.~ 162~.~ GR 463.~8~ 1752.~ 462.~ 1779.~ 461.8~8 1789.Z~ 1 ~9/21/87 14:~$:54 42~.~ee 468.$3~ 453.~e 463.~e~ 468.~E~ .eee 1285.~ 1842.~ 2~2.~ 2~5~.~e 2124.88~ 2575.e~ 481.~8~ 445.888 448.888 461.888 458.888 14988.888 1988.888 2.188 .888 452.888 463.888 455.888 .888 1285.888 1875.888 2818.888 2853.888 2158.888 2875.888 .888 .855 · 888 .888 .888 1315.888 1485.888 1788.888 1818.888 PAGE GR 458.888 1825.888 445.888 1835.888 448.888 1848.888 439.888 1852.888 438.488 1862.888 8R 4~9.888 1878.~88 448.88~ 1878.888 445.888 1889.888 458.888 1898.888 455.888 1983.888 GR 468.888 1938.888 461.888 1938.888 462.888 1951.888 463.888 1968.888 462.888 1974.888 8R 462.888 2816.888 461.888 2856.888 468.888 2288.888 468.888 2298.~88 468.488 2356.888 ~R 468.688 2496.888 468.888 2578.888 459.288 2615.888 468.888 2748.888 468.558 2855.888 GE 468.888 3639.888 461.888 3699.888 462.888 3787.888 463.888 3712.888 .888 .888 QT 8.888 98.888 1138.888 3238.888 5518.888 9688.888 13888.888 NH 4.888 .855 1318.888 .868 1368.888 .845 1685.888 ET .888 1831.58~ 1931.588 .888 .888 .8~ .888 J.R.D. CROSS SECTION 21888.888 .855 14988.888 3621.888 2.188 Xl 33478.888 58.888 1568.888 1683.888 315.888 268.888 325.888 .888 .888 .888 GR 478.888 .888 465.888 .888 465.888 968.888 459.728 975.858 459.728 975.858 GR 459.728 975.858 468.888 1818.888 468.288 1135.888 453.888 1228.888 462.888 1518.888 GR 462.888 1368.888 461.888 1382.888 468.888 1391.888 455.888 1419.888 458.888 1432.888 ~R 445.888 1432.888 448.888 1468.888 439.888 1465.888 439.588 1475.888 439.888 1485.888 GR 448.888 1491.888 445.888 1518.888 458.888 1528.888 455.888 153~.888 468.888 1565.888 GR 461.888 158~.~8~ 462.~8 1592.888 463.8~ 1683.888 462.8~8 1623.8~8 461.~8 1633.~8~ ~ 468.888 1643.888 459.888 1658.888 459.888 1693.888 468.88~ 1785.88~ 468.~8 1745.888 ~R 468.888 1783.888 468.888 1838.888 468.888 1998.888 461.888 2148.888 461.888 2285.888 SR 46~.2~ 2378.~8~ 46~.~8~ 2475.~ 459.788 2538.8~8 468.888 2668.888 468.888 2778.8~8 6R 461.888 3597.888 462.888 3685.888 46~.888 5618.e~ 464.888 $613.888 464.888 ~621.88~ QT 8.8~8 19838.888 19838.888 NH 4.888 .855 1281.888 ET .888 897.158 1865.458 14988.888 .855 19838.888 .845 14988.888 2488.888 2.188 19838.888 1592.888 .888 J.R.D. CROSS SECTION Xl 342B~.~ ~2.~ 128~.~ 1392.E~ 83~.888 25~.~ ~R 47~.~ .~ 465.~ .~ ~65.~ 853.~ GR 452.~0~ 1~08.8~ 451.5~8 1837.58~ 452.8~ 1875.8~ GR 453.88~ 1166.448 461.64~ 1281.88~ 461.~80 128B.8~8 ~R 45~.~88 1319.888 445.888 132~.~80 44~.~8 1337.B~ ~R 439.888 135~.~ 448.88~ 1357.848 445.88~ 1363.~0B GR 468.888 1~92.808 459.8~8 1488.80~ 458.88~ 1412.880 ~R 456.~8~ 1518.888 457.~8 1523.~4~ 458.8~ SR 461.5~ 2~9~.8~ 478.8~ 24~8.88~ .~48 .~ NH 5.808 .~5~ 648.88~ .855 NH 176~.8~8 .~88 .~88 .880 ET .808 838.868 152~.88~ .~8~ J.R.D. CROSS SECTION 461.28~ 452.888 439.~ 461.~8 868.~ 1875.~8~ 1291.~88 1372.88~ 155~.~08 · 845 .888 453.~88 452.8~8 438.888 455.e~8 456.88~ 461.~ 1528.888 .8~ 2.188 .E~ 1345.880 1685,~8 .855 · 848 GR 478.88~ .~04 465.~8 .8~8 465.8~ 648.88~ 465.8~8 648.~8 465.888 648.888 GR 465.~8 64B.8~ 465.~0 648.888 461.888 668.~80 461.~88 885.788 461.~8 1885.~ GR 462.888 1~38.~8~ 463.~ 121~.888 464.8~8 1278.88~ 464.38~ 131~.B8~ 46~.88~ 1~8.~ GR 455.~8~ 1341.~8 458.~4 138~.~ 445.~88 1388.808 44~.~80 139~.~88 439.3~ 1394.8~ GR 448.~8~ 141~.~8 445.888 1428.8~8 45~.8~ 1435.888 455.888 1442.~8 468.~g~ 1465.~ 1 ~9/21/87 14:33:54 PAGE GR 465.8~ 1520.~8~ 466.808 1532.848 467.8~ 155~.88~ 468.8~ 1578.888 469.~88 1598.~8~ GR 47~.888 1618.888 471.8~8 1638.88~ 472.~48 1648.~8 473.~8~ 1671.~8 474.880 1691.88~ GR 475.~8 171~.~8~ 476.~ 174~.8~ 477.798 1768.8~ .8~ .888 .888 .88~ Nil 5.8~8 .~5~ 1355.~88 .855 NH 276~.888 .~8 .88~ .~8~ ET ,~8~ 1316.788 252~.8~0 .888 J.R.D. CROSS SECTION END OF THE RIGHT BAI~ FILL AND I~PROVEMENTS Xl 3495~.8~e 38.~88 2518.8~8 2528.8~8 118.848 98.~8~ GR 478.80~ B2~.8~0 465.~ 62~.8~ 464.8~8 748.8~ GR 463.488 1~.8~8 463.B8~ 1~62.BGB 462.~88 1198.880 GR 462.8~ 2838.8~8 463.880 2218.88~ 464.~8~ 227~.~88 GR 455.80~ 2341.8~ 458.8~8 2388.~8~ 445.8~0 2388.888 GR ~,~.8~0 241~.~ 445.~ 2428.~ 45~.~80 2435.0~ GR 465.8~ 252~.~ 466.88~ 2532.~ 467.88~ 2558.888 GR 47~.8~8 261~.~8 471.~8~ 263~.~8~ 472.08~ 2648.8~8 GR 475.~8 271~.~8~ 476.~88 274~.~8~ 477.798 276~.~8 QT 8.8~8 1~58.~ 2998.880 5188.8B0 895~.8~ 12848.888 Nil 6.898 .86~ 12~.~8 .~58 2155.~ .868 NH 3968.~48 .~5~ 4878.~0~ .80~ .8~ .~ ET .8~8 29Ee.0~8 3923.24E .80~ .8e8 .8E8 463.~ 464.3~8 44~.800 455.~8 468.~ 473.~88 1785~.8~8 298~.~08 ·845 768.~8~ 1355.888 2398.~8~ 2442.888 2578.88~ 2671.888 .8~ 1568~.888 .~45 2528.808 2.18~ 463.8~ 461.~8 439.38~ 468.~e~ 469.~o 156ce.cee 2.1E8 .855 · 880 2338.80~ 2394.888 2465.808 2598.8~8 2691.8~8 .868 FE~ CROSS SECT]ON Xl 36979.~Ee 31.E~E ~ 483.~Ee lEeB.EeE b'~ 473.~E 181~.~E ~R 442.7~E 297~.EE~ GR 466.5~ 477.588 1050.888 475.888 1288.8~8 475.~8~ 474.8~8 2155.~88 469.888 2358.~88 458.888 2938.888 453.588 2938.888 444.~88 458.688 2975.~88 454.888 2985.~88 465.88~ 328~.~8 462.~88 3488.~88 462.~ 459.88~ 3748.888 459.888 3878.~88 461.588 NH 5.8~8 NH 3870.888 ET .~88 1677.1~ Xl 38288.~8~ GR 473.288 GR 468.~ GR 462.~88 BR 441.888 SR 462.~88 2295.808 GR 46~.~88 2488.888 GR 451.~88 SR 468.880 GR 4?8.888 2848.888 1 89/21/87 14:33:54 2723.498 21~8.~8~ 472.888 125~.888 47~.888 136~.888 468.888 466.888 1578.E98 464.888 2858,888 466.888 2878.~88 467.488 462.888 2135.~88 468.888 2142.~88 458.~88 444.888 22~8.888 458.888 2215.889 46~.~88 462.888 2348.088 464.880 2398.888 464.~8 458.888 2588.888 456.888 2515.~88 454.~88 452.E~8 462.8~8 2755.888 464.8~8 472.888 PAGE 7 NH 5.8~8 NH 2318.888 ET .888 Xl 39298.~88 GR 474.888 GR 464.888 GR 464.888 GR 441.888 8R 458.888 6R 466.~88 NH NH ET FENA · 858 1275.888 .855 1548.~ .845 1675.808 .855 2175.8~8 1522.688 2118.688 .888 .~8 .8~8 .~88 .~ 2.18~ 38.808 1525.888 1675.888 988.8~8 1118.880 1898.~8~ 1~8~.8~8 472.088 1838.888 47~.888 1878.888 468.~88 1115.~8 466.88~ 1275.888 462.88~ 1328.888 468.388 1345.~88 462.~8 1525.888 462.888 154~.88~ 468.888 1558.~88 458.~88 1580.888 445.888 1688.008 458.888 1615.~88 468.~88 1675.888 1758.888 458.880 1958.88~ 468.888 288~.888 462.8~ 215~.888 464.8~8 2175.~8~ 2188.8~ 468.8~8 219~.~8~ 47~.~8~ 2288.~8 472.~8~ 224~.8~8 474.~88 · 868 1858.898 · 855 6848.88~ 3871.828 4566.968 CROSS SECTION Xl 39448.888 OR 462.58~ OR 481.588 6R 485.888 NH 6.888 .858 1898.888 .858 2388.888 .855 3768.888 .845 4678.888 NH 4958.888 .855 6288.888 .888 .888 .888 .888 .888 .888 ET .888 3883.898 4614.188 .888 .888 .888 .888 .888 2.188 .858 · 8~18 .888 FEMA ~ROSS SEOTION X1 39498.888 33.888 4838.888 4318.888 58.888 58.888 58.888 .888 GR 582.888 1888.888 491.588 1898.888 479.808 2388.888 478.588 2488.888 P.~ 477.588 3868.888 478.288 3175.888 477.888 3328.888 477.888 3478.888 GR 465.888 3782.888 462.788 3885.888 462.388 3895.888 463.888 3914.888 GR ~62.888 3985.888 467.588 4838.888 463.8~8 4845.888 454.388 4155.888 6R 442.888 4193.888 443.588 4217.888 462.588 4257.888 468.588 4318.888 8R 464.888 4635.888 478.288 4678.888 478.588 4958.888 6R 495.888 5948.888 499.888 6128.888 588.888 6288.888 .888 .888 478.888 2678.888 478.888 3768.888 464.888 3965.888 442.888 4183.888 478.588 4585.888 483.588 5588.888 483.588 5528.888 QT 8.888 1888.888 2868.888 4888.888 8588.888 12388.888 17188.888 15488.888 15488.888 NH 6.888 .858 1858.888 .855 2888.888 .855 4848.888 .845 4158.888 NH 4718.888 .855 6848.888 .888 .888 .888 ,888 .888 .888 ET .888 3864.118 4589.918 .888 .888 .888 .888 .888 2.188 FEMA CROSS SECTION X1 39548.888 54.888 4848.888 4158.888 58.888 58.888 58.888 GR 582.888 1888.888 491.688 1858.888 498.888 1168.888 487.888 GR 484.888 1888.888 483.888 2888.888 488.888 2188.888 488.888 SR 477.888 3458.88~ 477.388 3618.888 471.588 3738.888 465.888 GR 464.888 4888.888 468.888 4825.888 464.888 4~48.888 444.888 I 89/21/87 14:33:54 487.888 1538.888 477.888 2488.888 463.888 3988.888 442.888 4118.888 PAgE 8 8R 462.588 4158.888 468.588 4218.888 462.888 4488.888 GR 481.588 4888.888 483.888 4978.888 484.888 5888.888 GR 485.888 5688.888 488.888 5738.888 493.588 5838.888 464.888 4688.888 466.588 482.888 5388.888 482.888 588.888 6848.888 .888 QT 8.888 1888.888 2868.888 4888.888 8588.888 12388.888 1718~.088 18288.888 18288.888 NH 6.888 .868 1288.888 .855 3758.888 .868 4738.888 .845 4815.888 NH 5418.888 .848 6288.888 .888 .888 .88~ .888 .888 .888 ET ,888 4598.338 5824.848 .888 .88~ .888 .888 .888 2.188 · 845 .888 .888 FEMA CROSS SECTION X1 48658.888 32.888 4738.888 4815.888 1488.888 GR 488.588 2958.888 489,888 3248.888 487.888 GR 468.288 4328.888 465.888 4588.888 465,888 ~ 451.288 4778.88~ 448.888 4788.888 44~.888 SR 463.~B q86~.~88 467.e~ 4878.888 464.888 GR 482.588 5418.888 484.288 5558.888 483.888 ~ 497.8~8 615~.808 499.888 6288.8~8 .888 .888 498.288 473.888 464.888 457.888 471.888 495.588 QT 8.888 625.888 1798.888 385~.888 5378.888 7788.888 18788.888 9888.888 9888.888 NH 6.888 .868 1548.888 .855 2338.888 .855 2378.888 .845 2445.888 NH 3358.888 .868 5288.888 .888 .888 .888 .888 .888 .888 ET .~SB 1793.41~ 2917.228 .88~ .888 .888 .888 .888 2.188 .888 FEMA CROSS SECTION Xl GR GR GR GR GR 498.4~I~) 5~121). JBS~l 32.~e 237~.EE~ 2445.~88 5788.888 583.ESE 1388.8~8 498.888 1458.~88 482.288 465.6~ 1718.~88 464.888 1748.888 464.588 459.~88 2355.888 457.888 2378.888 445.688 448.588 2485.888 454.88~ 2418.88~ 462.388 ~65.588 2858.888 ~67.888 )868.8~8 ~67.8~ 48?.888 $58~.~ ~89.8~ 5578.888 491.888 581.5~8 5288.888 .888 QT 6.888 558.~88 NH 6.~ .858 NH 4585.~8~ .868 ET .888 3783.788 FENA CROSS SECTION Xl 5135~.~8~ ~ 479.8~ 2858.888 OR 471.388 $14~.8~8 8R 478.58~ 4~8.88~ ~R 482.~ 4615.888 1 89/21/87 14:~:54 38.888 416E.888 4515.888 3688.888 492.688 472.88~ 468.788 478.~8~ 469.488 1498.88B 482.5~8 154~.~8 474.~88 159~.~8 1888.888 467.28~ 1898.~88 469.~88 2)75.888 446.888 2385.~88 446.888 243~.~8 466.588 2445.888 471.~88 2588.888 317~.~8~ 475.888 3248.888 474.5~8 398~.8~ 491.~88 433~.~88 48B.5~ 474~.~ 6788.88~ 9328.888 9488.888 9488.88~ .855 4168.888 .845 4515.888 .~58 · 888 .~8~ .88~ 2.188 37~0.E88 3358.888 .888 .888 .888 1488.888 498.588 1688.888 487.888 185~.888 2478.888 4?2.588 2698.888 474.~88 293~.888 $688.888 468.5~ 38~8.~8 468.5~8 387~.~88 4168.~8 446.5~8 4288.8~8 447.588 4258.~88 4415.888 478.2~ 4515.888 483.888 4585.888 5215.888 588.88~ 533~.88~ 5~5.588 5428.8~8 PAGE 9 NH 6.88~ .~5~ 1388.888 .~55 NH 6128.888 .855 6238.888 .888 ET .888 4283.888 5678.888 .888 FEMA CROSS SECTION · 858 5578.88~ .~45 567~.~8~ .~58 Xl 53358.888 34.~88 5578.888 5678.888 1658.888 GR 518.8~8 1888.88~ 498.888 12~8.~88 492.888 GR 474.888 2188.888 472.58~ 2588.888 474.88~ 2758.888 472.8~ 3488.888 GE 469.888 3518.8~8 472.588 37~8.888 472.588 374~.E~8 GR 475.~8~ 5178.~8~ 478.888 53~.8~ 473.888 5368.888 472.~8 5478.888 GR 45~.~88 5588.~ 448.~ 559~.~ 45~.~ 56~0.~ 45~.00~ GR 46~.~ 565~.~ 467.~ 567~.~0~ 473.B~ 578~.0B0 472.~B8 59~.~ GR 478.888 61~8.888 481.488 6128.~88 498.8~8 NH 6.888 .84B 1)ee,ee~ .~55 1988.~8 NH 448~.~8~ .855 454~.88~ .~8~ .~ ET .~88 3539.87~ 4348.888 .888 .888 FENA CROSS SECTION 476.8~ 467.888 3458.888 472.888 4788.888 456.888 5578.888 451.~8 563~,~ 475.~ 6~0.~0~ X1 55598.888 23.888 425~,888 4348.888 2888,~88 22~8.888 2248.~88 .888 .8~ .88~ GR 581.5~8 188~.888 493.888 118~.888 487.888 158~.~88 484.88~ 15~.8~8 486.~88 1558.888 .~88 .8~ .888 2,188 ,~8 ~ 489.B~0 GR 472.000 6R 452.400 GE 473.000 NH 6.000 .050 1850.000 .052 NH 4630.000 .060 48E0.000 .~00 ET .~00 $859.870 4415.000 .000 FEfWtA CROSS SECTION Xl 56940.000 33.000 4335.0~0 GR 502.000 1000.008 499.400 GE 474.500 2330.00~ 474.600 SR 472.000 3300.00~ 475.000 GR 469.000 3920.00~ 474.0~0 GR 462.008 4335.000 454.500 ~ 452.088 4370.000 467.0~0 GR 476.0~ 4630.000 500.080 EJ .~e .000 .000 1 09/21/B7 14:33:54 475.0~0 25~0.000 475.000 260~.000 471.000 3000.00~ 473.000 4000.0~0 476.~00 4240.000 470.0~0 4250.~0~ 472.000 434~.000 474.000 439~.~ 472.5~0 4410.00~ 412~.000 .055 4335.000 .045 4415.000 1250.000 125e.000 135~.~09 494.500 1720.0~e 490.80~ 472.400 2828.000 475.600 475.000 376~.000 473.40~ 475.800 398~.000 475.300 451.000 4345.000 449.200 474.000 4415.000 473.e0~ PAGE HEC2 RELEASE DATED NOV 76 UPDATED MAY 1984 ERROR CC)ER - 01,~2,03,04,05,~6 MODIFICATION - 50,51,52,53,54,55,56 IBM-PC-XT VERSION THIS Rt.fl EXECUTED 09/21/87 14:35:19 T1 T2 T3 DENTON CREEK - F.I.S. UPDATE DENTON CREEK - FIS 1~8 YR DISCHARGE PROFILE DENTON CREEK, TEXAS J1 ICHECK INQ NINV J2 NPROF IPLOT PRFVS 15.~ .~ -1.~ 1 09/21/87 14:33:54 ( ENCROACHMENT RUN ) (54705 - DNEXTET) IDIR STRT XSECV XSECH METRIC HVINS Q blSEL FQ .08 .~ 0. 456.648 .~ FN ALLDC IBW CHNIM ITRACE PAGE 11 THIS RUN EXECUTED 09/21/87 14:35:55 10 HEC2 RELEASE DATED NOV 76 UPDATED NAY 1984 ERROR (;ORR - ~1,82,83,84.85,86 MODIFICATION - 51),51,52,53,54,55,56 IBM-PC-XT VERSION NOTE- ASTERISK (N) AT LEFT OF CROSS-SECTION NL~ER INDICATES flESSA~E IN SUFI~RY OF ERRORS LIST DENTON CREEK, TEXAS SUlt~ARY PRINTOUT TABLE 118 SECNO CWSEL 28878.888 456.14 28878.888 456.64 29618.8~8 456.69 29618.88~ 457.89 38578.88~ 457.39 38578.888 457.78 ~1238.888 457.95 31238.888 458.39 3215~.88~ 458.24 32158.~88 458.95 522~8.888 457.82 322~8.8~8 458.68 32238.888 457.97 32238.88~ 458.72 32258.88~ 468.21 32258.888 459.57 325~5.888 458.66 32385.88~ 458.56 32725.8~8 462.22 32725.~e~ 461.58 33145.888 462.31 33145.888 46~.12 89/21/87 14:33:54 SECNO CNSEL DIFKt.~S EO TOPWID QI_OD QCH OROB PERENC STENCL STCHL STCHR STENCR 456.69 366.2~ .88 21118.82 457.14 3~9.28 .88 21157.38 189.98 .88 .88 2319.88 2678.~8 .88 142.63 366.88 2~19.88 2~19.88 2678.8~ 2685.88 · 88 457.22 318.88 4.18 21295.81 · $9 457.68 256.83 .88 21388.88 · 88 .88 .88 286~.73 244E.~ .ee .88 315.88 2893.88 286e.73 244e.E~ 24~8.~ .88 457.96 376.33 .39 458.41 284.57 .88 21388.88 .Se 21388.88 .88 .88 .88 3445.18 3948.88 .88 .88 375.8~ 3468.88 3445.18 3948.~8 3835.88 · 88 458.58 311.18 · 45 458.96 219.25 · 88 3387.83 5837.8~ .88 3487.82 3387.83 3837.8~ 3737.82 · 88 459.9~ 119.78 · 71 459.98 98.80 · 88 348~.88 3525.88 .~ 3417.58 3488.88 3525.~8 3587.5~ .88 468.45 12~.97 .~8 19358.8~ .8~ .86 468.33 84.83 .88 149~.~8 .88 3398.58 3539.5~ 3398.58 3539.58 3518.8~ .88 468.52 121.83 .88 19388.88 .88 .75 468.36 84.83 .88 1498~.8~ .88 3398.58 3539.58 3398.58 3539.58 · 8~ 468.73 1584.58 5898.86 14868.77 -.64 468.44 188.88 .88 14988.88 · 37 .8~ .88 3488.88 3525.08 .e~ · 88 188.88 3412.58 3488.88 3525.88 3512.58 · 88 461.57 149.29 .88 1755~.80 -.11 461.~7 1~8.17 .~ 149~.8~ .88 .88 .88 2118.88 2325.88 .~ .~ 118.8~ 2162.5~ 211~.~ 2325.~0 2272.5~ .88 462.27 1993.11 4287.25 4948.22 2152.53 -.64 462,73 11~.~8 .88 149~.~ .~ · 8~ .~8 1948.88 2158.88 .~ 11~.88 1998.~8 194~.~8 215~.~ 21~.8~ .88 462.58 2267.96 7888.75 8637.98 4561,27 .82 463.48 686.96 4417.46 9789.17 773.37 .88 .88 1752.88 1968.~8 686.96 1519.25 1752.88 1968.88 2286.21 PAGE 12 DIFKNS EG TOPWID QLOB QCH QROB PERENC STENCL STCHL STCHR STENCR 11 3347~.~ 462.58 3347~.E~E 463.48 3426E.E~ 463J7 3426~.~ 463.84 3485~.~ 463.~1 3485~.~ 463.78 5495~.~ 463.65 5495~.~ 464.36 36978.80~ 466.~7 3697~.8~B 466.38 382~8.808 466.76 382~8.~80 467.~6 39290.080 467.~4 39298.BB~ 467.34 39440.800 466.78 3944B.88B 467.~5 39490.~0 467.19 39490.000 467.49 39540.8~0 467.18 3954~.~B8 467.4~ 4~650.0~8 468.22 4~658.~8 468.52 48888.800 478.7~ 48~8.~8 471.39 5135~.~0~ 472.B0 5135~.BB0 472.74 53350.~B~ 472.57 53350.~B0 473.36 55598.008 473.25 55590.0~0 474.85 5694B.BSB 474.5B 5694B.BBB 475.55 ~9/21/87 14:33:54 .~ 462.78 2627.58 31B8.2~ 11454.89 6436.91 .BE .~ 1368.~B 16~3.8~ .88 · 9~ 463.65 9~.00 3032.~5 1~2~1.6~ 1666.34 9~0.~ 1~31.5~ 136~.8~ 16~3.~ 1931.5~ .~ 463.16 1286.79 7457.66 4773.66 2668.68 .~ .e~ 128B.~ 1392.88 .88 .77 463.95 968.3~ 74~4.18 4752.26 2743.56 968.3~ 897.15 128~.~0 1392.~ 1865.45 · ~ 463.75 736.98 1645.21 13254.79 · 77 464.42 619.4~ 1625.79 13274.21 .~ .~ .E~ 131E.E~ 152E.~8 .~0 .ES 689.14 830.86 131~.~8 152~.E~ 1528.00 · ES 463.98 1692.49 4475.77 1~424.23 · 71 464.61 1196.24 584e.67 9859.33 · ~E .E~ .~E 231e.EE 2528.0~ .ES .~8 12B3.22 1316.78 231e.~8 252~.~ 2528.88 .~ 466.31 1394.37 .31 466.62 1~85.72 18.8~ 8765.32 6815.88 .~ .EO 290~.~0 3~6~.~0 .80 .~ 895~.14 6643.87 1~23.24 29~.~B 29~.E~ 3E6~.~0 3923.24 .~ 466.84 1226.12 2458.98 5938.7~ 7218.32 .E8 .E8 2188.Ee 2278.88 .80 · 3e 467.14 1~34.27 23~2.~7 6~83.66 7214.27 1~46.39 1677.1~ 21~0.0~ 2278.~8 2723.49 · ~B 467.14 1029.42 15~4.48 7254.41 6861.11 .~ .B8 1525.B8 1675.~0 .~0 · 3~ 467.45 796.~8 1239.61 7476.61 6883.78 796.~8 1322.68 1525.8~ 1675.~8 2118.68 · ~0 467.4~ 852.68 1379.21 12114.41 2186.39 .~ .~0 4~4~.~ 415~.~ .BO · 28 467.72 623.91 113~.74 12487.84 1981.42 695.94 3871.~2 4~4~.~8 415~.~0 4566.96 · ~0 467.49 552.76 1795.10 13731.92 .29 467.8~ 427.39 1237.02 14359.36 72.99 .~0 .~ 483~.~ 4310.00 .~8 3.63 730.21 3883.89 4~38.~ 431~.~8 4614.10 · 00 467.59 876.65 1472.18 11212.86 2715.83 .~ .~ 4~40.80 415~.8~ .80 · 3~ 467.91 671.99 1252.57 1158~.59 2666.84 725.8~ 5864.11 4~40.~ 4158.~ 4589.91 .~ 468.46 827.59 1~98.72 6876.88 2232.48 .~0 .~8 473~.~ 4815.88 .88 · 29 468.85 434.51 633.27 7687.47 1879.27 434.51 4598.33 473~.~ 4815.~8 5~24.84 .~ 478.78 1539.17 3513.71 4253.65 2~32.64 .~ .~8 237B.~8 2445.~8 .88 .69 471.5~ 1123.81 542~.03 4667.75 1712.22 1123.81 1793.41 237~.~E 2445.~8 2917.22 · ~ 472.~8 1458.86 284~.27 6555.34 .74 472.85 731.22 1522.85 7877.15 4.58 .BO .~ 416B.0~ 4515.B8 .B8 · ~0 731.22 3783.78 4168.B0 4515.~8 4515.B8 .~ 472.69 2184.87 3183.20 6151.63 · 79 475.49 1167.~8 2869.84 6538.96 65.17 .~ 1466.4~ 4283.6~ 557~.~B 567~.88 5678.88 .8~ 473.68 1412.99 1867.49 7511.69 .8~ 474.55 641.71 1189.51 8210.49 28.83 .~B .8~ 425B.~0 4348.88 .80 .~ 8~0.93 3539.~7 4258.80 4348.8~ 4340.~8 .~ 474.79 1465.94 2737.22 6635.3~ 27.48 .85 475.68 416.5~ 2257.69 7142.51 .~ 555.13 3859.87 4335.~0 4415.~8 4415.88 PAGE 13 12 St, M~RY OF ERRORS AND SPECIAL NOTES I ~9/21/87 14:33:54 PA~E 14 FLOODWAY DATA, DENTON CREEK. TEXAS PROFILE NO. 2 STATION ....... FLOO[:X,4A¥ ....... WATER SURFACE ELEVATION WIDTH SECTION MEAN WITH WITHOUT DIFFERENCE AREA VELOCITY FLOODWAY FLOODWAY 2887~.~8 365. 3766. 5.7 456.6 456.1 .5 2961~.~ 315. 345~. 6.2 457,1 456.7 .4 3~57~.~ 375. 3355. 6.3 457.8 457.4 .4 ' 3123~.8~ 219. 2475. 6.~ 458.3 457.9 .4 3215~.~8 9~. 183~. 8.1 458.9 458.2 .7 322~.~ 9~. 1446. 1~.3 458.7 457.8 .9 3223~.~ 9~. 1449. 1~.3 458.8 458.~ .8 3225~.~ 1~. 1993. 7.5 459.7 48~.2 -.5 323~5.~ 1~8. 117~. 12.7 458.7 458.7 .~ 32725.~ 11~. 1731. 8.6 461.7 462.2 -.5 33145.~ 687. 3877. 3.8 463.1 462.3 .8 3347~.~ g~. 536~. 2.8 463.5 462.6 .9 3426~.~8~ 968. 7243. 2.1 463.9 463.1 .8 3485~.~0~ 876. 276~. 5.4 463.8 463.~ .8 3495~.E~ 1196. 4863. 3.1 484.3 463.6 .7 3697E.~ 1~23. 4859. 3.2 466.4 468.1 .3 382~.~ 1~46. 7716. 2.~ 467.1 468.8 .3 3929~.~ 796. 6827. 2.3 467.3 467.~ .3 39448.B~8 696. 3271. 4.8 467.1 466.8 .3 3949~.~ 73~. 3629. 4.3 467.5 467.2 .3 3954~.~e8 726. 3594. 4.3 467.4 467.1 .3 4~658.~8 435. 2812. 3.6 468.5 468.2 .3 488~.~8 1124. 5448. 1.8 471.4 47~.7 .7 5135~.~ 731. 39~2. 2.4 472.7 472.~ .7 5335~.~ 1466. 44~4. 2.1 473.4 472.6 .8 5559~.~ 8~1. 2318. 4.1 474.1 473.3 ,8 5694~.~ 555. 246~. 3.8 475.3 474.5 .8 1 ~9/21/87 14:36:~3 PAGE 1 HED2 RELEASE DATED NOV 76 UPDATED MAY 1984 ERROR CORR - 81,~2,~3,04,~5,~6 MODIFICATION - 5~,51,52,53,54,55.56 13 THIS RUN EXECUTED ~9/21/87 14:36:~3 APPENDIX 2 DENTON CREEK CITY OF COPPELL, TEXAS PROPOSED CONDITIONS HEC-2 ENCROACHMENT MODEL # WATER SURFACE PROFILES * · VERSION OF NOVEMBER 1976 # UPDATED MAY 1984 * · IBM-PC-XT VERSION · RUN DATE 119/21/87 TIME 16:25:AY+ * * U.S. ARFIV CORPS OF ENGINEERS * * THE HYOROLOOIC ENGINEERING CENTER * * 6~9 SECOND STREET, SUITE O * * DAVIS, CALIFORNIA 95616 * * (916) ~Y+~-21~5 (Fl'S) 448-21~5 * I e9/21/87 16:23:45 X X XXX)OO(X X)O00( X X X X X X X X X XXX)O00( XXXX X X X X X X X X X X X X ~ XXXXX XXXXX X X X XXXXX X X XXX)O(XX PAGE I HEC2 RELEASE DATED NOV 76 UPDATED MAY 1984 ERROR CORR - ~1,82,~3,84,~5,~6 MODIFICATION - 5~,51,52,53,54,55,56 IBM-PC-XT VERSION THIS RUN EXECUTED 89/21/87 16:23:45 C T1 T2 T3 DENTON CREEK - PROPOSED CONDITIONS DENTON CREEK - FIS 1~ YR DISCHARGE PROFILE DENTON CREEK, TEXAS Jl ICHECK INQ NINV J2 NPROF IPLOT PRFVS 1.~ .E~ -1.~ (54785 - DN) IDIR STRT METRIC HVINS Q WSEL FQ 8. .8~88~ .~8 .~ 0. 456.148 .~e XSECV XSECH FN ALLDC IBW CHNIM ITRACE VARIABLE CODES FOR SLI~MARY PRINTOUT 118.~ 28~.~88 .~8 .~8 J5 LPRNT NUMSEC .~88 .B~ .8~ .88~ **"******REQUESTED SECTION NUMBERS******** ~T 8.~e~ 16~e.~e 459~.Ee~ 783~.Ee~ 1375~.~e 1973~.e~e 2743~.~ee 2138~.Eee 213~e.Eee NC .~ .~ .E~ .1~ .3~e .~ .E~ .e~ NH 5.88~ .86~ 2319.EEE .835 2521.~e .~6~ 258~.~ .845 2758.Ee~ NH 5488.888 .888 .888 .888 .888 .888 .888 .888 ET .888 2319.888 2685.888 .888 .888 .888 .888 .888 2.118 FEMA CRC~ SECTION Xl 28878.888 37.888 2319.888 2678.~ 618.888 988.888 618.888 .888 68 478.888 988.888 465.888 1495.888 465.888 1695.888 465.888 1798.888 68 465.888 2888.888 465.888 2878.888 465.888 2188.888 465.888 2148.888 6R 465.888 2319.888 457.888 2319.888 437.588 2397.888 437.588 2428.888 GE 457.888 2521.888 457.288 2521.888 454.788 2588.888 437.688 2688.888 68 451.588 2678.888 459.388 2758.888 459.388 2818.888 459.388 3818.888 OR 459.388 3288.888 459.388 3278.888 459.388 3388.888 459.388 4348.888 GE 459.388 4688.888 459.388 4858.888 468.888 4888.888 461.488 4958.888 GE 469.488 5218.888 473.888 5488.888 .888 .888 .888 .888 .888 .888 465.888 1938.888 465.888 2198.888 437.588 2443.888 436.388 2638.888 459.388 3898.888 459.388 4628.888 467.388 5818.888 NC .888 .888 .888 .188 .388 .888 .888 .888 .888 NH 5.888 .855 2868.738 .835 2253.888 .855 2296.888 .835 2448.888 NH 5188.888 .888 .888 .888 .888 .888 .888 .888 .888 ET .888 2893.888 2488.888 .888 .888 .888 .888 .888 2.118 1 89/21/87 16:23:45 · 888 · 855 PAGE 2 FEMA CROSS SECTION Xl 29618.888 38.888 2868.738 2448.888 658.888 888.888 68 478.888 528.888 468.588 688.888 466.888 788.888 68 465.888 1888.888 465.888 1188.888 465.888 1288.888 GR 465.888 1588.888 465.888 1688.888 465.888 1788.888 6R 465.888 2888.888 465.888 2855.888 455.588 2855.888 OR 437.838 2168.888 459.158 2253.888 468.888 2296.888 68 458.688 2448.888 458.788 2478.888 458.788 2538.888 68 458.788 3838.888 458.788 3878.888 458.788 3148.888 68 465.388 4988.888 467.888 5888.888 478.888 5188.888 658.888 .888 .888 465.888 888.888 465.888 465.888 1388.888 465.888 465.888 1888.888 465.888 455.658 2868.738 437.838 437.488 2356.888 437.888 458.788 2658.888 458.788 468.888 3218.888 464.888 NH 5.888 .855 3445.188 .835 3642.398 .855 3756.888 NH 7188.888 .888 .888 .~88 .888 .888 .888 ET .888 3468.888 3835.888 .888 .888 .888 .888 · 835 3858.888 .855 .888 2.118 .888 FEMA CROSS SECTION Xl 38578.888 68.888 3445.188 3948.888 988.888 6R 47~.288 1688.888 468.288 1788.888 466.888 6R 465.888 2188.888 465.888 2288.888 465.888 OR 465.888 2688.888 465.888 2788.888 465.888 OR 465.888 3188.888 465.888 3288.888 465.888 68 457.438 3445.188 438.238 3522.888 438.238 68 455.988 3756.888 439.888 3778.888 439.888 68 451.488 3884.888 455.588 3924.888 459.288 465.888 2488.888 465.888 465.888 2988.888 465.888 465.888 3488.888 465.888 459.338 3642.398 459.588 456.788 3858.888 458.288 468.888 3958.888 468.888 468.288 5288.888 468.888 5688.888 468.888 6188.888 462.288 6688.888 478.188 7188.888 qT 8.888 98.888 1138.888 NC .855 .855 .835 ET .888 3487.828 3737.828 FEMA CROSS SECT[ON Xl 31238.888 36.888 3387.838 3837.888 628.888 788.888 628.888 .888 .888 .888 8R 478.888 1888.888 478.888 1188.888 478.888 1288.888 478.888 1388.888 478.888 1488.888 GR 478.888 1588.888 478.888 1688.888 478.888 1788.888 478.888 1755.888 478.888 1778,888 OR 478.888 2188.888 478.888 2288.888 478.888 2272.888 478.888 2888.888 478.888 3154.888 8R 478.888 3213.888 478.888 3234.888 478.888 3388.888 478.888 3387.888 459.798 3387.838 8R 438.558 3472.888 438.558 3588.888 457.196 3582.588 456.888 3614.888 438.688 3646.888 8R 438.188 3661.888 438.588 3672.888 459.488 3788.888 468.888 3888.888 468.888 3837.888 8R 468.388 3869.888 .888 .888 .888 .888 .888 .888 .888 .888 89/21/87 16:23:45 PAOE QT 8.888 98.888 1138.888 NC .855 .855 .835 ET .888 3417.588 3587.588 FENA CROSS SECTION END OF THE ADDITIONAL PROOP~ED CHiWYEL Xl 32158.888 27.888 5488.888 3525.888 OR 478.888 1888.888 478.888 1688.888 GR 478.888 2288.888 478.888 2228.888 GR 478.888 2658.888 478.888 2688.888 GR 459.888 3188.888 468.888 3288.888 OR 437.888 3448.888 437.888 3478.888 OR 468.888 3525.888 461.588 3658.888 QT 8.888 98.888 1138.888 3238.888 NC .855 .855 .815 .388 NH 3.888 .855 3398.588 .815 ET .888 3428.888 3518.888 .888 FEI~ CROSS SECTION END OF PARKS OF COPPELL DENTON TAP ROAD 5518.888 .888 .888 988.888 478.888 478.888 478.888 461.588 437.888 3539.588 9688.888 .888 .888 958.888 1888.888 2328.888 2988.888 3388.888 3475.888 9688.888 .855 13888.888 928.888 478.888 478.888 478.888 468.588 437.888 13888.888 .888 3688.888 .888 28888.888 .888 .888 2888.888 2628.888 3848.888 3488.888 3489.888 14988.888 .888 2.188 .888 478.888 478.888 459.888 437.888 447.888 14988.888 2.118 .888 2188.888 2648.888 3848.888 3427.888 3585.888 Xl 32288.888 36.888 3398.588 3539.588 58.888 58.888 58.888 .888 BT 3.888 3388.888 465.888 463.888 3552.888 465.~88 463.888 3688.888 OR 472.888 988.888 478.888 1318.888 478.888 1788.888 478.888 2888.888 OR 478.888 2281.888 478.888 2221.888 478.888 2222.888 478.888 2438.888 8R 478.888 2618.888 478.888 2611.888 478.888 2635.888 478.888 3888.888 GR 461.188 3es~.eB~ 462.~E~ $288.E~ 465.EeE 336~.~ee GR 45~.EE~ 3425.EeE 446.580 3432.~e 463.89~ 3432.818 GR 435.~ 3455.E~E 435.88~ 3475.8~ 445.~ 3495.~ GR 446.5~ 3498.~ 458.~ 35~5.~8~ 461.588 3539.5~ 46~.EeE 3381.~ee 461.5~E 339~.5~ 463.~E~ 3434.99E 445.EeE 3435.E~E 463.EE~ 3495.~1~ 463.eee 3497.99~ 468.888 3558.888 465.888 3552.888 5518.888 9688.888 13888.888 19388.888 14988.888 FEHA CROSS SECTION X1 32238.888 X2 .888 QT NC ET 98.888 1138.888 3238.888 5518.888 9688.888 13888.888 17968.888 14988.888 3412.588 3512.588 .888 .888 .888 .888 .888 2.188 FEHA CROSS SECTION 89/21/87 16:23:45 PAGE 4 X1 32258.888 25.888 3488.888 3525.888 ~ 478.888 1888.888 461.888 1688.888 BR 457.888 2288.888 457,888 2228.888 ~R 457.888 2658.888 456.588 2688.888 F_~ 461.588 3388.888 488.588 3488.888 GR 437.888 3475.888 437.888 3489.888 1.888 1.888 1.888 .888 461.888 1888.888 458.888 2888.888 459.888 2328.888 456.588 2628.888 459.888 2988.888 459.888 3188.888 437.888 3427.888 437.888 3448.888 447.888 3585.888 468.888 3525.~88 459.888 2188.888 455.888 2648.888 468.888 3288.888 437.888 3478.888 461.588 3658.888 QT 8.888 98.888 1138.888 3238.888 5518.888 9688.888 13888.888 17558.888 NH 5.888 .858 1323.888 .855 1748.888 .868 2118.888 .845 NH 3858.888 .888 .888 .888 .888 .888 .888 .888 ET .888 2162.588 2272.588 .888 .888 .888 .888 .888 JAC~ R. DAVIS (J.R.D.) CROSS SECTION START OF THE RIGHT 8AJ~ FILL AND IMPROVEMENTS Xl 32385.888 33.888 2118.888 2325.888 55.888 55.888 SE 478.888 58.888 478.888 58.888 478.888 58.888 GR 467.888 58.888 466.888 135.888 465.888 228.888 GR 461.888 1358.888 461.888 1375.888 461.888 1748.888 6R 464.888 1975.888 465.888 2845.888 465.888 2118,888 GR 46~.BeB 2168.~ 455,~ 2175.8~ 45~,B~ 22~4.~ GR 437.788 2232.888 438.888 2239.888 448.888 2245.888 ~=R 455.888 2281.888 468.888 2325.888 461.888 3858.888 55.888 .888 .888 .888 .888 .888 .888 .888 478.888 58.888 478.888 58.888 465.888 1323.888 461.888 1315.888 462.888 1825.888 463.888 1898.888 464.888 2125.888 463.~88 2148.888 445.~88 2218.~ 448.~ 2225.~e 445.888 2253.888 458.888 2263.888 qT 8.888 9~.888 113~.888 3238.88~ 5518.888 9888.888 13888.888 11388.888 14988.888 NH 5,~88 .85~ 1275.88~ .~55 1568.~8~ .868 194~.~8 .845 215~.8~8 NH 3358.888 .888 .888 .888 .888 .888 .888 .888 .888 ET .888 1998.888 2188.888 .888 .888 .888 .888 .888 2.188 · 85i~ .888 .888 J.R.D. CROSS SECTION START OF ANDREW BROb~I COI~MUNII'Y PARK Xl $2725.~0 34.~e 194B.~ 215~.~88 $88.808 528.~0~ 42~.~ .GB~ .888 6R 478.8~ .8~8 465.888 .8~8 465.808 1273.88~ 461.8~ 1285.8~8 ~61.8~ 1285.~ GR ~61.~E8 1285.80~ 461.8~8 1568.880 ~53.~08 1592.~ ~53.8~E 1842.8~ ~64.808 1875.8~ 6R 463.~88 1948.888 468.8~8 1968.8~0 455.888 1981.~8~ 45~.E08 2882.888 445.888 GR 448.~88 2825.~ 439.880 283~.8~8 438.288 2848.088 439.808 285~.888 448.E88 GR 445.8~ 287B.8~8 458.~88 2888.808 455.080 2098.~8 468.888 2124.888 461.E~0 2158.~88 GR 46~.E88 2225.8~8 461.~88 2485.~8~ 462.~8~ 2585.808 46~.888 2788.B~8 463.8~ C4~ 462.8~8 2828.88~ 461.8~8 2848.80~ 460.000 2875.0~0 459.888 3358.800 .888 ~T 8.8~8 98.8e~ 1138.8Ee 3238.8E8 5518.~8e 968e.888 13880.~88 2lEeS.SeE 14988.880 NH 5.808 .858 1305.908 .855 1428.6~ ,86~ 1752.800 .845 1960.8~0 ET .~8~ 1512.58~ 1931.58~ .888 .E00 .~80 .888 .808 2.188 J.R.D. CROSS SECTION 89/21/87 16:23:45 PAGE X1 33145.~0~ 5~.80~ 1752.888 1968.888 $85.888 298.888 GR 478.888 .~80 465.~88 .888 465.~88 1385.98~ GR 480.338 1315.888 488.558 1358.1~0 468.64~ GR 451.758 1515.888 452.888 1545.8~8 453.888 162~.8~ GR 463.~0~ 1752.~08 462.808 1779.888 461.880 1789.~00 GR 45~.~88 1825.888 445.888 GE 439.~ 187~.~ 44B.~ 1878.~ 445.~ 1889.~ GR 460.0~0 193~.~Z~ 461.~0 1938.~8~ 462.~88 1951.8~ GE 462.8~0 2~16.~80 461.~ 2~26.~ 461.~ 2~46.~ GR 459.~ 2286.8~ 459.~8~ GR 46B.2~8 253~.808 461.808 2615.~ GR 461.8~8 3699.~08 462.888 QT 8.0~0 98.808 NH 4.888 .855 ET .88~ 1831.588 1138.~88 1931.588 J.R.D. CROSS SECTION 5518.888 1368.8~ 968~.88~ .~45 46~.33~ 463.808 468.888 439.888 458.8~8 461.9~ 461.~ 460.55~ 1315.E~ 1428.688 1795.8E~ 1852.880 1898.8~ 196~.~ 2146.888 2855.88~ 46~.33~ 452.808 463.88~ 438.488 455.8~e 462.800 461.8~0 5621.888 2.1E~ 1485.888 1862.888 19B~.88~ 1974.8~ 2266.8~ 2460.880 Xl 33478.888 58.8~8 136~.8~8 1683.808 315.~8~ 26~.888 325.808 .~80 .888 GR 478.888 .8~8 465.888 .80~ 465.~ 96~.B8~ 459.728 975.858 459.72B 975.858 GR 459.728 975.858 468.~88 1~18.88~ 46~.28~ 1135.808 453.88~ 1228.888 462.808 1318.808 GR 462.800 136~.~0 461.88~ 1382.~80 468.~08 1391.8~8 455.~ 1419.~ 45~.~ 1432.~8 GR 44-5.~ 1432.~ ~.~ 146~.~ 439.~ 1465.~ 439.5~ 1475.~ 439.~ 1485.~ GR 448.880 1491.888 445.808 1518.080 45~.88~ 152~.888 455.888 15~4.~88 46~.80~ 1565.888 C4~ 461.888 1588.888 462.888 1592.~8 463.~0~ 16~5.8~ 462.8~B 1625.888 461.808 1635.8~ ~ 45~.~ 16~.~ 459.~ 1658.~ 459.~Z 169~.~ 46B.B~ 17~5.B~ 46~.~8~ 1745.~8~ GR 46~.88~ 178~.888 46~.~8~ 19Z3.~8 459.088 1915.~8 458.8~8 1938.808 458.~88 195~.~Z 6R 459.888 196B.808 468.88~ 198~.80~ 461.880 2~1~.~0 461.908 2128.80B 461.~8Z 2225.~8B GR 46~.888 2250.888 460.~88 2285.80~ 461.880 231~.8~0 461.6~8 2388.808 461.~8 2455.~80 6R 468.080 2585.888 468.888 2668.808 468.888 277~.888 461.808 3597.8~8 462.~ GR 463.~8~ $618.80~ 464.~08 3615.888 464.8~0 5621.888 .80B .888 .~88 .880 QT 8.888 19838.888 NH 5.888 .855 NH 2488.888 .888 ET .888 852.888 J.R.D. CROSS SECTION APPROXIMATE END OF PARK LIHITS .855 Xl 34268.888 ~6.888 1288.888 1392.888 838.888 258.888 798.888 .888 .888 .888 SR 478.888 .888 465.888 .888 465.888 853.888 461.288 868.888 453.888 988.888 8R 452.888 1888.888 451.588 1837.588 452.888 1875.888 452.888 1875.888 452.888 1875.888 GR 453.888 1166.488 461.648 1281.888 461.888 1288.888 468.888 1291.888 455.888 1384.888 6R 458.888 1319.888 445.888 1328.888 448.888 1337.888 439.888 1348.888 438.888 1345.888 8R 439.888 1358.888 448.888 1357.888 445.888 1363.888 458.888 1372.888 455.888 1381.888 8R 468.888 1392.888 459.888 1488.888 458.888 1412.888 457.888 1421.888 456.888 1438.888 8R 456.888 1518.888 457.888 1523.888 458.888 1533.888 459.888 1555.888 468.888 1685.888 GE 461.888 1858.888 461.888 1688.888 459.888 1728.888 458.888 1778.888 458.888 1615.888 8R 459.888 1638.888 468.888 1855.888 461.888 1985.888 461.888 2838.888 461.588 2898.888 6R 478.888 2488.888 .888 .888 .888 .888 .888 .888 .888 .888 1 89/21/87 16:23:45 PAGE NH 5.888 .858 648.888 .855 1885.888 .868 1318.888 .845 1528.888 NH 1768.888 .888 .888 .888 .888 .888 .888 .888 .888 ET .888 838.868 1528.888 .888 .888 .888 .888 .888 2.188 J.R.D. CROSS SECTION X1 34858.888 38.888 1318.888 1528.888 528.888 648.888 598.888 .888 .888 GE 478.888 .888 465.888 .888 465.888 648.888 465.888 648.888 465.888 GR 465.888 648.888 465.888 648.888 461.888 668.888 461.888 885.788 461.888 8R 462.888 1838.888 463.888 1218.888 484.888 1278.888 464.388 1318.888 468.888 GR 455.888 1341.888 458.888 1388.888 445.888 1388.888 448.888 1398.888 439.388 GR 448.888 1418.888 445.888 1428.888 458.888 1435.888 455.888 1442.888 468.888 GR 465.888 1528.888 466.888 1532.888 467.888 1558.888 468.888 1578.888 469.888 GE 47~.888 1618.888 471.888 1638.888 472,888 1648.888 473,888 1671,888 474,888 SE 475.888 1718,88~ 476,888 1748.888 477.798 1768,888 ,888 ,888 ,888 NH 5.888 .858 1355.888 .855 2885.888 .868 2318.888 .845 2528.888 NH 2768.888 .888 .888 .888 .888 .888 .888 .888 .888 ET .888 1316.788 2528.888 .888 .888 .888 .888 .888 2.188 O.R.D. CROSS SECTION END OF THE RIGHT BN~ FILL AND IMPROVEMENTS .855 6~8.888 1885.888 1338.888 1394.888 1465.888 1598,888 1691.888 .855 · 888 .888 Xl 34958.888 38.888 2318.888 2528.888 118.888 98.888 188.888 .888 8R 463.488 1888.888 463.888 1862.888 462.888 1198.888 461.888 1355.888 GR 462.888 2838.888 463.888 2218.888 464.888 2278.888 464.388 2318.888 GE 455.888 2341.888 458.888 2388.888 445.888 2388.888 448.888 2398.888 ~ 448.888 2418.888 445.888 2428.888 458.888 2435.888 455.888 2442.888 GR 465.888 2528.888 466.888 2532.888 467.888 2558.888 468.888 2578.888 GR 478.888 2618.888 471.888 2638.888 472.888 2648.888 473.888 2671.888 QT 8.488 1858.888 2998.888 5188.888 8958.888 12848.888 17858.888 15688.888 15688.888 NH 6.488 .868 1288.888 .858 2155.888 .868 2988.888 .845 3868.888 ET .888 2988.888 $923.248 .888 .888 .888 .888 .888 2.188 FENA CROSS SECTION Xl 36978.888 31.488 2988.888 3868.888 GR 483.888 1888.888 477.588 1858.888 6R 473.888 1818.888 474.888 2155.888 GR 465.888 2988.888 458.888 2938.888 GR 442.788 2978.888 GE 466.588 3148.888 GE 463.888 3678.888 1 89/21/87 16:23:45 456.888 2998.888 462.888 3438.888 461.588 3968.888 475.888 1518.888 466.888 2858.888 448.888 2937.888 465.888 3868.888 464.588 3578.888 463.588 3998.888 PAGE 7 NH 5.888 .858 1548.888 .868 2188.888 .845 2278.888 .855 2755.888 468.888 1488.888 462.888 1658.888 467.488 2188.888 458.888 2168.888 468.888 2255.888 464.888 2448.888 NH 3878.888 .888 .888 ET .888 1677.188 2725.498 X1 38288.888 49.888 2188.888 GR 473.288 1888.888 472.888 8R 468.888 1548.888 466.888 GR 462.888 1938.888 464.888 GR 464.888 2125.888 462.888 GR 441.888 2185.888 444.888 GR 462.888 2295.888 462.888 GR 468.888 2488.888 458.888 GR 451.888 2568.888 452.888 GR 468.888 2728.888 462.888 GR 478.888 2848.888 472.888 2.188 .888 468.888 1458.888 461.888 1768.888 466.888 2128.888 444.888 2178.888 462.888 2278.888 462.888 2468.888 454.888 2538.888 452.888 2535.888 456.888 2628.888 458.888 2678.888 466.888 2888.888 468.888 2828.888 474.488 3878.888 .888 .888 NH 5.888 .858 1275.888 NH 2318.888 .888 .888 ET .888 1322.688 2118.688 X1 39298.888 38.888 1525.888 GE 474.888 1888.888 472.888 GR 464.888 1275.888 462.888 GE 464.888 1525.888 462.888 GE 441.688 1588.888 445.888 GE 458.888 1758.888 455.888 GR 466.~ 2188.~88 468.~8~ .~55 .888 .888 468.888 1115.888 462.888 1488.8~8 458.888 1568.888 468.888 1675.888 462.88~ 2158.888 472.8~B 224~.E~ NH 6.888 .868 1~58.888 NH 4718.888 .855 6848.888 ET .888 3871.828 4566.968 · 845 4158.888 .868 · 888 .888 .888 .88e 2.188 .888 FEMA CROSS SECTION Xl 39448.888 34.888 4848.888 4158.888 158.888 288.888 158.888 eR 582.~88 1888.888 491.688 1858.888 eR 484.888 1888.888 483.888 2888.888 eR 477.888 )458.888 477.)88 )610.888 eR 464.888 4888.888 468.888 4825.888 eR 462.588 4158.888 468.588 4218.888 eR 481.588 4888.888 48).888 4978.888 eR 485.888 5688.888 488.888 5738.888 498.888 488.888 471.588 464.888 462.888 484.888 49).588 487.888 1338.888 487.888 1538.888 488.888 2288.888 477.B88 2488.888 465.888 3798.888 46).888 3988.888 444.888 4898.888 442.888 4118.888 464.888 4688.888 466.588 4718.888 482.888 5388.888 482.888 5468.888 NH 6.888 .858 1898.888 NH 4958.888 .855 6288.888 ET .888 3883.898 4614.188 .855 3768.888 .888 .888 .888 .888 .845 4678.888 .858 .888 .888 .888 .888 2.188 .888 FEIIA CROSS SECTION Xl 39498.888 33.888 4~38.888 4318.888 eR 582.888 1888.888 491.588 1898.888 ~R 477.588 3868.888 478.288 3175.888 GR 465.888 3782.888 462.788 3885.888 GR 462.888 3985.888 467.588 4838.888 GR 442.888 4193.888 443.588 4217.888 1 89/21/87 16:23:45 58.888 58.888 479.888 2388.888 477.888 3328.888 462.388 3895.888 463.888 4845.888 462.588 4257.888 58.888 ·888 .888 .888 478.588 2488.888 478.888 2678.888 477.888 3478.888 478.888 3768.888 463.888 3914.888 464.888 3965.888 454.388 4155.088 442.888 4183.888 468.588 4318.888 478.588 4585.888 PAGE 8 8R 464.888 4635.888 478.288 4678.888 eR 495.888 5948.888 499.888 6128.888 478.588 4958.888 588.888 6288.888 483.588 5388.888 483.588 5528.888 .888 .888 .888 .888 ~T 8.888 1888.888 2868.888 4888.888 8588.888 12388.888 17188.888 15488.888 15488.888 NH 6.888 .858 1858.888 .855 2888.888 .855 4848.888 .845 4158.888 ET .888 3864.118 4589.918 .888 .888 .888 .888 .888 2.188 FENA CROSS SECTION Xl 39548.888 34.888 4848.888 4158.888 8R 582.888 1888.888 491.688 1858.888 6R 484.888 1888.888 483.888 2888.888 eR 477.888 3458.888 477.388 3618.888 GE 464.888 4888.888 468.888 4825.888 GR 462.588 4158.888 468.588 4218.888 GE 481.588 4888.888 483.888 4978.888 8R 485.888 5688.888 488.888 5738.888 58.888 58.888 58.888 .888 498.888 1168.888 487.888 1338.888 488.888 2188.888 488.888 2288.888 471.588 3738.888 465.888 3798.888 464.888 4848.888 444.888 4898.888 462.888 4488.888 464.888 4688.888 484.888 5888.888 482.888 5388.888 493.588 5838.888 588.888 6848.888 .888 487.888 477.888 463.888 442.888 466.588 482.888 QT 8.88~ 1888.888 2868.888 4888.888 8588.888 12388.888 17188.888 18288.888 18288.888 NH 6.888 .868 1288.888 .855 3758.888 .868 4738.888 .845 4815.888 NH 5418.888 .848 6288.888 .888 .888 .888 .888 .888 .888 ET .888 4598.338 5824.848 .888 .888 .888 .888 .888 2.188 · 888 · 845 .888 FENA CR055 SECTION Xl 48658.888 32.888 47)8.888 4815.888 1488.888 888.888 1118.888 ~ 581.888 1888.888 497.888 1288.888 49t.588 1888.888 489.888 ~R 488.588 2958.888 489.888 3248.888 487.888 3758.888 488.888 ~R 468.288 4328.888 465.888 4588.888 465.888 4688.888 465.588 SR 451.288 4778.888 448.888 4788.888 448.888 4888.888 449.888 .888 .888 498.288 2788.888 473.888 4188.888 464.888 4738.888 457,888 4815.888 8R 483.888 4868.888 467.888 4878.888 8R 482.588 5418.888 484.288 5558.888 GR 497.888 6158.888 499.888 6288.888 464.888 5888.888 465.888 5128.888 483.888 5798.888 486.888 5958.888 471.888 495.588 QT 8.888 625.888 1798.888 3858.888 5378.888 7788.888 18788.888 9888.888 9888.888 NH 6.888 .868 1548.888 .855 2338.888 .855 2378.888 .845 2445.888 ET .888 1793.418 2917.228 .888 .888 .888 .888 .888 2.188 FENA CROSS SECTION 6R 465.688 1718.888 464.888 1748.888 6R 459.888 2355.888 457.888 2378.888 GR 448.588 2485.888 454.888 2418.888 GR 465.588 2838.888 467.888 3868.888 GR 487.888 3388.888 489.888 3578.888 GR 498.488 5828.888 581.588 5288.888 I 89/21/87 16:23:45 32.888 2378.888 2445.888 5788.888 2988.888 7358.888 .888 482.288 1498.888 482.588 1548.888 464.588 1888.888 467.288 1898.888 445,688 2375.888 446.888 2385,888 462.388 2438.888 466.588 2445.888 467,888 3178.888 475.888 3248.888 491,888 3988,888 491.888 4338,888 474.888 469.888 446.888 471.888 474,588 488,588 PAGE 9 QT 8.888 558.888 1568.888 2668.888 4688.888 6788.888 9328.888 9488.888 9488.888 .888 NH 6.888 .858 1488.888 .858 2938.888 .855 4168.888 .845 4515.888 .858 NH 4585.888 .868 5428.888 .888 .888 .888 .888 .888 .888 .888 ET .888 3783.788 4515.888 .888 .888 .888 .888 .888 2.188 .888 FERA CROSS SECTION Xl 51358.888 GR 589.888 1888.888 584.888 1188.888 492.688 1488.888 GR 479.888 2838.888 474.588 2238.888 472.888 2478.888 GR 471.388 3148.888 469.688 3488.888 468.788 3688.888 GR 478.588 4888.888 478.588 4188.888 478.388 4168.888 GR 478.388 4288.888 471.888 4315.888 469.488 4415.888 GR 482.888 4615.888 484.888 4675.888 498.888 5215.888 38.888 4168.888 4515.888 3688.888 3788.888 3358.888 .888 .888 498.588 1688.888 487.888 472.588 2698.888 474.888 468.588 3888.888 468.588 446.588 4288.888 447.588 478.288 4515.888 483.888 588.888 5338.888 585.588 NH 6.888 .858 1388.888 .855 3488.888 .858 5578.888 .845 5678.888 .858 NH 6128.888 .855 6238.888 .888 .888 .888 .888 .888 .888 .888 ET .888 4283.688 5678.888 .888 .888 .888 .888 .888 2.188 .888 FEI'lA CROSS SECTION Xl 53358.888 6R 518.8~8 1888.888 498.888 1288.888 ~R 474.888 2188.888 472.588 2588.888 ~ ~8§.~ 351~.~ ~72.5~ 37~.~ (~R 475.888 5178.888 478.888 5388.888 GR 458.888 5588.888 448.888 5598.888 ~ 468.888 5658.888 487.888 5678.888 GR 478.888 6188.888 481.488 6128.888 5578.888 479.888 1858.888 476.888 1988.888 472.888 3488.888 467.888 3458.888 472.888 5478.888 456.888 5578.888 458.888 5628.888 451.888 5638.888 472.888 5988.888 473.888 6888.888 518.888 6238.888 .888 .888 NH 6.888 .848 1388.888 .855 1988.888 .868 4258.888 .845 4348.888 .868 FENA CROSS SECTION ~ 581.588 1888.888 493.888 1188.888 487.888 1388.888 484.888 1588.888 486.888 8R 489.888 1988.888 488.888 2888.888 475.888 2588.888 475.888 2688.888 471.888 GR 472.888 3688.888 472.888 3988.888 473.888 4888.888 476.888 4248.888 478.888 GR 452.488 4388.888 452.488 4525.888 472.888 4348.888 474.888 4398.888 472.588 GR 473.888 4448.888 483.888 4488.888 582.888 4548.888 .888 .888 .888 NH 6.888 .858 1858.888 .852 NH 4638.880 .860 4800.088 .080 ET .888 3859.878 4415.888 .888 FENA CROSS SECTION 09/21/87 16:25:45 4415.808 .858 2.188 .880 PAGE 18 X1 56948.888 33.888 4535.888 4415.888 1258.888 1258.888 1358.888 .888 .888 .880 GR 582.888 1888.888 499.488 1878.888 494.588 1728.888 498.888 1858.888 477.808 2898.888 6R 474.580 2338,888 474.688 2488.888 472.488 2828.008 475.688 2988.888 473.688 3128.888 GR 472.888 3388.808 475.888 3648.888 475.888 3768.888 473.488 3858.888 469.888 3888.888 6R 469.888 3928.888 474.888 3938.888 475.888 3988.888 475.388 4128.888 472.888 4298.888 GE 462.888 4355.888 454.588 4348.888 451.088 4345.888 449.288 4355.888 449.888 4368.888 GR 452.888 4378.888 467.888 4488.888 474.088 4415.888 473.888 4448.808 473.888 4445.888 GR 476.888 4630.080 508.800 4768.888 582.088 4888.888 .~88 .888 .808 .880 I 89/21/87 16:25:45 PAGE 11 HEC2 RELEASE DATED NOV 76 UPDATED NAY 1984 ERROR CORR - 81,82,83,84,85,86 HODIFICATION - 58,51,52,53,54,55,56 IB~I-PC-XT VERSION THIS RUN EXECUTED 89/21/87 16:25:82 T1 T2 T3 31 ICHEC~ 32 NPROF DENTON CREEK - PROPOSED CONDITIONS OENTON CREEK - FIS 180 YR DISCHARGE PROFILE DENTON CREEK, TEXAS (54705 - DNPRET) INQ NINV IDIR STRT 9. 8. 8. .888888 IPLOT PRFVS XSECV XSECH 18 ( ENCROACHMENT RUN ) HETRIC HVINS Q ktSEL · 88 .8 8. 456.648 FN ALLDC IBW CHNIM FQ ITRACE ~9/21/87 16:23=45 PAGE 12 HEC2 RELEASE DATED NOV 76 UPDATED MAY 1984 ERROR CORR - ~1,~2,~3,E4,~5,~6 IwDDIFICATION - 5~,51,52,53,54,55,56 IBM-PC-XTVERSION THIS RUN EXECUTED 89/21/87 16:25:$5 NOTE- ASTERISK (#) AT LEFT OF CROSS-SECTION NUNBER INDICATES MESSAC-E IN StJII%AR¥ OF ERRORS LIST DENTON CREEK, TEXAS SUDIMARY PRINTOUT TABLE 11~ SEONO CNSEL DIFK]~S E6 TOPWID QLOB QCH 2887~.BB~ 456.14 .~E 456.69 366.23 .B~ 2111E.~2 2687~.~ 456.64 .5~ 457.14 349.28 .~ 21157.38 29618.e8~ 456.69 .~ 457.22 318.88 4.18 21295.81 2961~.~ 457.~9 .39 457.68 256.~3 .~ 213~.B~ 3857~.~88 457.39 .88 457.96 376.33 3~57~.~88 457.78 .39 458.41 284.57 31238.~8 457.95 .B~ 458.5~ 311.18 .~8 2837~.~8 3123~.~0~ 458.39 .45 458.96 219.25 .~ 149~.~ 3215~.~ 458.24 .8~ 459.9~ 119.7~ .~E 2~.e~ 3215~.~ 458.95 .71 459.98 9~.~ .88 149~.~B 322~.~8 457.82 .~ 46~.45 12~.97 .8~ 19358.88 $22~.~ 458.68 .86 46~.33 84.~3 .~ 149~.~ 3223~.~8~ 457.97 .~ 468.52 121.83 .~8 19388.~8 3223~.~ 458.72 .75 46~.36 84.~3 .~ 149~.~ 3225~.~ 46~.21 3225~.E~ 459.57 .~8 46~.73 1584.58 3898.86 14~68.77 -.64 46~.44 188.~8 .~8 149~.88 323~5.888 458.66 .88 461.57 149.29 .8~ 17558.88 323~5.~ 458.56 -.11 461.~7 1~8.17 .~ 149~.~ QROB PERENC STENCL STCHL STCHR STENCR 189.98 .~ .~ 2319.~ 267~.~ .~ 142.63 366.~ 2319.~ 2319.~ 267~.~0 2685.~8 · B~ .E~ .~ 2~68.73 244~.8~ .E~ 315.B~ 2~93.~ 2~6~.73 2448.~0 24~6.~0 · ~ .~ .~ 3445.18 394~.B~ .~ 375.~0 346~.~ 3445.18 394~.0~ 3835.00 .B~ 25~.~ 3487.~2 3387.~3 3837.8~ 3737.02 .~ 9~.~ 3417.5~ 34~8.~ 3525.88 3587.58 .~ .~ .~ 339~.5~ 3539.58 .~ 9~.~ 342~.8~ 339~.5~ 3539.5~ 3510.00 .~8 .~ .~ 3390.58 3539.50 .~ 9~.~ 342~.~ 33g~.5~ 3539.5~ .37 .88 .~ 348~.~8 3525.~8 .~8 .~ 1~.~ 3412.58 34~.~ 3525.~0 3512.58 .8~ .~8 .~ 211~.~8 2325.~8 .~8 .~ 11~.~ 2162.5~ 211~.~ 2325.80 2272.58 11 32725.~ 462.24 32725,~ 461.58 33145.~E~ 462.34 33145.~Ee 463.~7 .BE 462.36 1798.96 4436.11 5197.99 1665.9~ .~ .~ 194~.~E 215~.~ .Be -.67 462.73 11~.~ .BE 149~.E~ .~ 11~.E~ 199~.~ 194~.8~ 2158.88 2180.~e .~ 462.55 2276.68 7995.21 8864.42 4~B.37 .BE .~ 1752.B~ 1966.B~ .~ · 73 463.4~ 419.~ 4828.~7 1~71.93 .~8 419.~ 1512.5~ 1752.~ 196~.~ 1931.5~ ~9/21/87 16:23:45 PA6E 13 CNSEL DZFKNS 3347~.~ 462.63 3347~.~ 463.48 3426~.~ 463.~8 34268.~8~ 463.82 3485~.~ 462.97 3485~.~ 463.71 34958,~8~ 463.61 3495~.8~ 464.3~ 3697~.d8~ 466,~7 3697~.~ 466.37 $82~,8~ 466.76 382~B,8~ 467,~5 3929~,~9~ 467,~4 5929~.~ 467,35 3944~.~8 466.77 3944~.88~ 467.~4 5949~,~ 467,19 3949~.~8 467,48 39548.8~8 467,18 3954~.~88 467.59 4~658,888 468.22 4~658,888 468,51 48~0.B~ 478.7~ 48888.88~ 471,39 51358.888 472.74 5335~.888 472.57 53358.888 473.36 55598.888 473.25 EG TOPWID ~LOB ~ QROB PERENC STENCL STCHL STCHR STENCR .68 462.82 2629.67 3881.99 11285.57 6712.44 .~8 .~8 136~.~8 1683.88 .80 .85 463.65 9~.8~ 2988.48 18822.82 1897.5~ 9~8.88 1831.5~ 1368.88 16~3.~8 1931.5~ .88 463.16 1287.23 6978.12 4464.18 3457.78 .88 .88 1268.88 1392.~ .88 .74 463.89 962.36 7187.98 4438.29 3281.88 968.88 852.88 1288.88 1392.88 1828.~8 .88 463.73 73~.61 1592.83 13387.17 .74 464.37 613.99 156~.58 13339.58 .88 .88 1318.88 1528.~8 .80 689.14 638.66 1318.88 1528.88 1520.~0 .~8 463.95 1689.18 44~2.98 18497.10 .69 464.56 1195.65 4964.88 9935.12 .~8 .~8 .88 2510.88 252~.08 .~0 .~ 1283.22 1316.78 2318.8~ 2528.~8 252~.00 .88 466.31 1394.12 · 29 466.61 1083,84 18.68 8766.36 6814.96 .80 .88 290~.~8 3~68.88 .~0 .8~ 8966.56 6633.44 1823.24 2988.88 2988.88 386~.~ 3923.24 .88 466.84 1226.~7 2458.58 5931.22 7218.21 .~ .88 2188.88 2278.80 .88 .29 467.13 1~33.95 2298.35 6888.62 7213.84 1~46.39 1677.18 2188.88 2278.80 2723.49 · ~8 467.14 1829.39 15~4.25 7234.76 6668.98 .~8 .88 1525.88 1675.~8 .8~ · 29 467,4~ 796.88 1237.76 7488.41 6881.83 796,88 1522.68 1525,88 1675,08 2118,68 · 80 467.4~ 852.62 1378.84 12115.35 2185.68 .88 .88 4848.88 4158.88 .00 · 27 467.71 623.39 1127.46 12497.16 1975.38 695.94 3871.82 4848.88 4150.~8 4566.96 · ~8 467.49 552.74 1794.74 13732.30 · 29 467.8~ 427.15 1234.39 14362.85 72.95 ,~8 .88 4838.80 431~.8~ .~ 3.57 758.21 3883.89 4~3~.~8 431~.88 4614.18 .~ 467.59 876.6~ 1471.77 11213.86 2714.37 .88 .88 4848.8~ 4158.80 .80 · 29 467.98 671.54 1238,88 11589,15 2668,95 725.88 3864,11 4848.88 4158,80 4589.91 · ~0 468.46 827.57 1890.56 6877.12 2232.33 .88 .88 4730.08 4815.00 .80 · 29 468.82 434.51 632.25 7698.23 1877.52 434.51 4598.33 473~.88 4815.~8 5024.84 .~ 478.78 1539.16 3513.68 4253.72 2~32.68 .~ .~8 237~.~ 2445.~e .80 · 69 471.49 1123.81 3419.57 4668.78 1711.72 1125.81 1795.41 2570.88 2445.08 2917.22 .~8 ~72.~8 1438.86 2848.25 6555.37 .74 472.85 731.22 1522.61 7877.39 4.38 .~ .~ 416~.~ 4515.e~ .~¢ .~ 731.22 5783.78 416~.~8 4515.8~ 4515.8~ · 80 472.69 2184.75 5183.11 6151.72 65.17 ,79 473,49 1166,98 2868.65 6531.35 .ce 1466.48 42~3.68 5578,88 5670,08 5670.~ 475.68 1412.87 1867.39 7511.78 2~.83 .88 .88 4258.88 4340.08 .88 12 5559~.~8 474,85 56948.888 474.58 5694~.~ 475.35 89/21/87 16:23:45 .88 474.55 641.68 1189.24 8218.76 .88 8~8.93 3539.87 4258.E8 4348.8~ 4348.8~ · 88 474.79 1466.87 2737.28 6635.24 27.48 .88 .88 4335.88 4415.E~ .80 · 85 475.68 416.44 2257.68 7142.48 .8~ 555.13 3859.87 4335.88 4415.88 4415.88 PAGE 14 SUFf'IARY OF ERRORS AND SPECIAL NOTES I J~9/21/87 16:23:45 PAGE 15 FLOODL4AY DATA, DENTON CREEK, TEXAS PROFILE NO. 2 ....... FLOODWAY ....... MATER SURFACE ELEVATION STATION WIDTH SECTION HEAN WITH WITHOUT DIFFERENCE AREA VELOCITY FLOOEMAY FLOODMAY 28878.888 365. 29618.888 315. 38578.EE8 375. 3123~.8~ 219. 32158.88~ 98. 32288.8~8 98. 32238.8~8 98. 32258.888 188. 32385.888 188. 32725,E88 11E. 33145.888 419, 3347E.Ee~ 988. 34268.8E8 962. 3485e.e88 675. 34958,888 1196. 36978.E~8 1823. 3929~.~ 796. 3944~.888 696. 39498.~88 39548.88~ 726. 48658.~8 435. 48888.888 1124. 51358.888 731. 5335~.~ 1466. 5559~.8~ 881. 56948.88~ 555. 3766. 5.7 3458. 6.2 3355. 6.3 2475. 6.8 1838. 8.1 1446. 18.3 1449. 18.3 1993. 7.5 1178. 12.7 1731. 3371. 5395. 7688. 2716. 4798. 48~,6. 7787. 6821~. 3265. 3625. 3589. 2811~. 5447. 3982. 4483. 2317. 246~. 456.6 456.1 .5 457.1 456.7 .4 457.8 457.4 .4 458.3 457.9 .4 458.9 458.2 .7 458.7 457.8 .9 458.8 458.8 .8 459.7 46~.2 -.5 458.7 458.7 8.6 461.6 462.2 -.6 4.4 465.8 462.3 .7 2.8 463.5 462.6 .9 2.E 463.8 465.1 .7 5.5 463.7 463.8 .7 3.1 464.3 463.6 .7 3.2 466.4 466.1 .3 2.~ 467.1 466.8 .3 2.3 467.3 467.~ 4.8 467.1 466.8 .3 4.3 467.5 467.2 .3 4.3 467.4 467.1 .3 3.6 468.5 468.2 .3 1.8 471.4 478.7 .7 2.4 472.7 472.~ .7 2.1 473.4 472.6 .8 4.1 474.1 473.3 .8 3.8 475.3 474.5 .8 13 ~9/21/87 16:25:~9 HEC2 RELEASE DATED NOV 76 UPDATED HAY 1984 ERROR CORR - MOOIFIOATIUN - 50,51,52,53,54,55.58 IBI~PC-XT VE~ION 14 PAGE THIS RUN EXECUTED 09/21/67 16:25:40 APPENDIX 3 DENTON CREEK CITY OF COPPELL, TEXAS CROSS SECTIONS L E U ! ! 0 N C~oss-Section 323~ 560 ........... : ..... : ...... · .... : ...... ' .... : ..... : ..... : ..... : 490 ............ * .... : ........... : ..... : ................. : ...... STAI'I OH (feet) FiLL CUT Ceess-SectJon 3272~ ~90 ........... *- ..... : ...... · .... : ............ ' .... : ............ C~oss-Section 33145 488 ........... , ..... : ..... : ..... : ..... i ...........: ..... : ...... 478 ................ : ........... : ..... i ............' .... ** ...... 458 ................. .* ......... I[ ............ ** ..... :: ..... :: ..... *- i ; i ; ; ~ 438_ 5~ 18~ l$~ 2868 25b0 38be 35be 4869 45be STi~TION (Feet) C~ss-Section 33470 51Nl ............................................................ 498 ....................... .. ................. ** ..... : ............ 489 478 ................ i ............· .... : ..... : ..... : ..... : ...... 439 L E U ! I 0 Il Ceess-$ect ion 342&9 479 469 459 440 L E U ! I 0 N C~oss-Section 34859 44~ STIITIOH (~eeet) APPENDIX 4 DENTON CREEK CITY OF' COPPELL, TEXAS MAPS OF PROJECT AREA I MATCH IHEET 0 "0 Z Z I1'1 I1'1 Z m