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ST8601-SY 900905
The City With A Beautiful Future P.O. Box 478 Coppell, Texas 75019 214-462-0022 FILE COPY ~pteatber 5, 1990 Mr. Matthew Miller, P.E. R~sk Studies Division Federal Insurance Administration Federal Emergency Management Agency 500 C Street, SW Washington, D.C. 20472 Coppell Revised Flood Insurance Study Case No. 6 - 89 -236 Dear Mr. Miller~ Enclosed please find revised floodway models for a section of Denton Creek prepared by our consultant, Mr. Ron W. Morrison of Klmley-Horn & Associates, Inc. In his letter, dated September 5, 1990, Mr. Morrison explains that Dannenbaum Engineers, Inc. (presently Carter & Burgess Engineers, Inc.) had obtained a revision of an area ln Lewisville adjacent to coppell along Denton Creek..., etc. (See attached letter). Mr. Morrison has completed revised floodway models using a split flow analysis, which matches the Dannenbaum Channel on one side, while the other side follows the banks of Denton Creek, leaving an island between the two areas. We respectfully request that you incorporate this floodway refinement in the Flood Insurance Study revision that you are presently reviewing for the City of Please call Ron Morrison or myself, if you have any questions. Sincerely, ~ . ] XSD/bd Steven G. ~oram, Director of Public Works 'John Karleruher, Ginn, Inc. Ron W. Morrison, Kimley-Horn & Associates, Inc. R~VFIS. MSD I Kimley. Horn I Kimley-Hom and Associates, Inc. ENGINEERS · PLANNERS * SURVEYORS 12660 Colt Road, Suite 200 Dallas, Texas 75251 2~4 386-7007 Facaimlle 214 239-3820 September 5, 1990 Mr. Matthew Miller, P.E. Risk Studies Division Federal Insurance Administration Federal Emergency Management Agency 500 C Street, SW Washington, D.C. 20472 Re: Coppell Revised Flood Insurance Study Case No. 6 - 89 -236 Dear Mr. Miller. This letter is in regard to the ongoing review of the City of Coppell Flood Insurance Study. During conservations with Dannenbaum Engineers Inc. (now Carter and Burgess Engineers, Inc.) we discovered that there is a particular area of concern along Denton Creek. Dannenbaum had obtained a revision of an area in Lewisville adjacent to Coppoll along Denton Creek. Our Coppell analysis floodplain contained these changes. However, Dennenbaum's model and revision showed Denton Creek outside of the floodway. This would allow filling of Denton Creek, which is not keeping with the desires of the City of Coppell. To correct this matter we have completed a revised floodway model. This model incorporates n split flow floodway. One side of the floodway matches the Dannenbaum channel while the other side follows the banks of Denton Creek, leaving an island between the two areas. We have completed a separate floodway model through this area. Since it is not possible to model a continuous floodway model with this split flow, we have completed four models to represent this split flow area. They are: 1. Floodway model downstream of the floodway split. (Attachment 1) 2. Floodway model from Cross Section 223+70 (start of split flow) through the Dannenbaum (Lewisville side) floodway, ending at Cross Section 255+30 (end of the split flow). (Attachment 2) 3. Floodway model from Cross Section 223+70 (start of split flow) through Denton Creek (Coppell side) ending at Cross Section 255+30 (end of the split flow). (Attachment 3) Mr. Matthew Miller, P.E. - 2 - September 5, 1990 Floodway model from the split flow upstream to the end of the floodway model. (Attachment 4) We have included the models, floodway delineations, and other details of the hydraulic models to support this modification to our origional submittal. Attachment 5 contains the present floodway delineation and proposed modification. A summary of the results of the floodway analysis is included in Table 1 on the following page. On behalf of the City of Coppell we request that you incorporate this floodway refinement in the Flood Insurance Study revision you are presently reviewing. Please call if you have questions. Sincerely, KIMLEY-HORN AND ASSOCIATES, INC. Ronald W. Morrison, P.E. Senior Hydrologist pw Attachment APPFNDIX I Kimley. Horn Kimley.-Horn ~nd A~.~at~s, Inc. ENGINEERS * PLANNERS * SURVEYORS 12660 Colt Road. Sui~ 200 Dalla~ Texas 75251 214 386-7007 Facsimile 214 239-3820 September 5, 1990 Mr. Matthew Miller, P.E. Risk Studies Division Federal Insurance Administration Federal Emergency Management Agency 500 C Street, SW Washington, D.C. 20472 Re'- Coppell Revised Flood Insurance Study Case No. 6 - 89 -236 This letter is in regard to the ongoing review of the City of Coppell Flood Insurance Study. During conservations with Dannenbaum Engineers Inc. (now Carter and Burgess Engineers, Inc.) we discovered that there is a particular area of concern along Denton Creek. Dannenbaum had obtained a revision of an area in Lewis~ille adjacent to Coppell along Denton Creek. Our Coppell, analysis floodplain contained these changes. However, D-a_nnenbaum's model and revision showed Denton Creek outside of the floodway. This would allow filling of Denton Creek, which is not keeping with the desires of the City of Coppell. To correct this matter We have completed a revised floodway model. This model incorporates a split flow floodway. One side of the floodway matches the Dannenbanm channel while the other side follows the banks of Denton Creek, leaving an island between the two areas. We have completed a separate floodway model through this area. Since it is not possible to model a continuous floodway model with this split flow, we have completed four models to represent this split flow area. They are: I. Floodway model downstream' of the floodway split. (Attachment I) 2. Floodway model from Cross Section 223+70 (start of split flow) through the Dannenbaum (Lewisville side) floodway, ending at Cross Section 255+30 (end of the split flow). (Attachment 2) 3. Floodway model from Cross Section 223+70 (start of split flow) through Denton Creek (Coppell side) ending at Cross Section 255+30 (end of the split flow). (Attachment 3) .~aheim * Chattot~ * ~ · Po~ Laudett~e * Fo~ Mye~ * ~ * Orlando * P'noe~x Releigi'l * $~n Diego * Stulrt * Tl, ml~. "VelO Be~ch ,, VJr~inll Rel¢I~ · Welt Pilm 8eicll since 1967' Building client ;el&tio n sl~iP $ Mr. Matthew Miller, P.E. -2- September 5, 1990 4. Floodway model from the split flow upstream to the end of the floodway model. (Attachment 4) We have included the models, floodway delineations, and other details of the hydraulic models to support thi~ modi/~cation W our orig/onal subm/ttal. Attachment 5 contains the present floodway delineation and proposed modification. A summary of the results of the floodway analysis is included/n Table I on the following page. On behalf of the City of Coppell we request that you incorporate this floodway refinement in the Flood Insurance Study revision you are presently reviewing. Please call if you have questions. Sincerely, KIMLEY-HORN AND ASSOCIATES, INC. Ro~d W. Morrison, P.E. Senior Hydrologist pw Attachment '"'" TABLE i h::S..~l-. OF ~E.~c.~ ~.OODWAY ANALYSIS COPPELL SI~ c,.l'. ELRU. Q MIl. FI. CF-C, ~lO 457.58 20600 ~.~0 453.5 5000 ~800 452.?8 20600 23800 4~.47 5000 < 4100 4~.45 20600 :54700 4~.75 5000 ( Z~O 453.67 2~30 25~0 454.2 5000 SECT. ELEU. gl NO. Fl'. CFS 11)440 452.12 20600 18440 4~.12 20600 19~0 452.25 20600 !?~0 4~.23 20600 !9930,u~.~.'~n ~ 20600 19930 4~.~ 20600 21560 ~n -- ~.~; 20600 ~60 ~.~ 20400 22370 ~52.58 20600 ~370 453.5 20400 SECT. ~EV. Q ~. FT. CFS 22~0 4~.~8 20600 > 22370 ~53.5 15600 23800 4~.78 20600 > 23800 453.62 15600 24700 4~.45 20600 > 24700 {5).87, 15400 25~0 4~.67 -> 2~30 45~.2 15400 25~0 453.67 20600 25530 ~' ~ ~34'.. 20600 26830 454.74 20600 26830 4.j~.41 20600 2B080 '~ ~' ~ '~^ 2U870 ~f6.04 23H00 27870 456.64 21300 30570 4~6.J2 2!!00 ~0~0 4~,28 21300 31230 ' ~ *13QO 31230 {57,44 21300 ~00 32230 32250 ~2~05 ~145 J~470 ~470 g4260 3426O 34~0 39290 39440 395~0 ~8000 ¢8000 457.89 456.89 457.~,4 4~.14 ~57.61 45? 459.22 4~8. :~ 45B.2B ..~6! · ~62. !8 462, ~ 7 462,49 462 463,09 464. i ~4.1~ 466. ~ 2 466.7B 467.5! 467.07 467.79 466.81 ,~67.22 ~67.92 ~67 ' ~67.79 460.2~ 470, ~71.~ 472 21300 21300 21300 21300 21300 21300 21300 21300 21500 21300 21500 21~00 ~00 14900 14900 14900 14900 14900 !4~0 14900 14900 !~900 15600 15600 15600 156(~ !5600 15600 15600 15600 15600 !~00 102~0 10200 9800 '800 9400 ~E~S!ON OF ~OVE~ER,, ~976 UPDATED MAY i?~4 - U.S. ARMY CORPS OF ~NG~t.,'R~ THE HYDROLOGIC ENGtHEERING CENTER ) RUN D~Tr 19-'.?A-DQ TIME 2!:I7:30 St; 609 SECOND STREET, SUITE D t~ (9t6) 440-2105 (FTS) ,t40 -2!05 AT MAOARTHUR BLVD BRIDGE X ........... XXXXX X X YYYXTM vvvvy X X X X X X X X X X X X ,LOgX, J<XXX XXXX X XX×XX XXXXX X X X X -:' X X v y X ~ X X X X,,.;,;,..,^X .:/~,a,X ,,^,',.,,X,-,,, F,,~C~ RELEASE DAT~ !'t0'," ;A ~.., ~.,,,-, ,-;~ MAY .... n~, rnDD - 0!,02,~ ~a,nS,06 ~TT~T~Ttr,~ - =~ ~ ~ ~ ~ [~H--~'C-XF VERSION AUGUST 1985 THIS '"'N ..--,~r,,'r~- !2-26-89 COTTOD!H,q. oD ~RAHCH HASTER DRAINAGE PLAX lOO YEAR FF.'FQUERCY FLOOD EXISTING CONDITIONS -r T Jl T ,"',,.ir ,",'!HQ UT'm ID!R ST~T ME,R.C HVINS · b, ,, O. ~. O. O. .(~O000O .00 .0 I'~ )dor-,,,,' IF'LOT ~,~, , ~ ~, - r, FN .... r ~v.~ ~ ~ ~,FU.. ~.~c.g X.=E ~H ALLDC 1.000 .000 -!.000 .000 .000 .000 .000 ]3 UARtAPLE CODES FOE: SUMM, AF,:Y F'R!HTOUT 110.®0 200.~0 .000 .000 .000 .000 .000 .000 ]5 LPRHT NUMSEC ,t~+~x~.~R_~u .. ..... HUMBERS-~X~!~ HSEL FQ O. 463,370 .000 CHN!M ITRACE .000 .000 .000 .000 .000 lOC.:')O0 .000 .000 -LO,O00 ,OOO ,OOO '~00 .000 .000 .000 .000 ~ .v~v ,000 ,000 .000 ,000 ,000 ,000 ,000 NC E9 ,000 S/50,000 7650,000 2,100 ,000 7,100 37~0,000 X! !8~0,000 31,000 ~H~BO.O00 5B%000 10000,000 ~500,000 5BBO,O00 ,0O0 ~R 460,000 !000,000 448.000 t~O0.O00 448.000 1800.000 4~7.000 350.000 ,035 .055 ,045 ,100 ,SO0 ,000 ,000 ,000 ,000 8.000 20600.000 20600.000 20600.000 20600.000 206O0.000 ~600.000 20600.000 20600.000 .000 GR 440.000 ~LO.O00 440.000 ~00.000 445.000 2600.000 ~R 450,000 5350,000 ~51,000 5~60,000 449,000 5480,000 OR 434.000 5~5.000 431.~00 ~45.000 431.400 55~.000 ~R 450.000 ~700,000 450,000 58~0,000 448,000 &O00,O00 ~R 450.000 6ZO0.O00 447.000 6780.000 ~6.000 6780.000 ~R 470.000 7~50.000 .~00 .000 .000 .000 ~48,000 2~0.000 ~46.000 5515.000 447.000 5560.000 450.000 62Z0.000 450.000 6940.000 .000 .000 .300 .000 650.000 650.000 ~8,000 1070.000 44~.000 2600.000 4-t4,000 2900.000 445.000 3040.000 447. O00 3~00. 000 446.000 3850,000 ~6,000 ~-150,000 4~7.300 .~0~0.000 .000 .000 .000 7.100 ~000.000 5%5.000 ~50.000 .000 447.~00 1~0.000 443.000 2670.000 443.000 2920.000 443.000 3070.000 446.000 3550.000 447,000 ~740.000 445,000 4550,000 448.000 5040.000 NC . O~ .055 ,035 . tO0 E! .OOO 4000,000 B250,000 2.100 XI !9330,000 61.000 ~!,800 5965.000 ~'R 4u4. vvO lOOO.OOQ 450.000 1050. 000 GR 446.000 2{10.000 445.000 2450.0O0 GR 4~5.000: 2710.000 445.000 2860.000 GR ,946.000 29Z0.0~ 446.000 3020.000 GR 446.700 325~.000 447.000 3~0.000 6R 447.000 3650.000 446.000 37!0.000 gR 446.000 .~80.OOO 446.000 t, 160.000 OR 447.000 4740.000 4~7,000 4800.000 ! 01-10-% 16:40:37 .000 {45.000 2300.000 .448.000 5250.000 440,000 451.000 ~85,000 =. 65~.000 460.000 74~0.000 ~OQO .OQO ,000 ,000 .000 . · ,000 .000 .OO0 .000 .000 .000 .000 447.uv0 445.000 26B0.000 445.000 2960,000 447.0.0'0 3100.000 " 444.000 ~600,000 447.000 40~0,000 ~46.000 4700.000 448.000 52B0.000 PAGE 2 GR 448.000 5490.000 448.000 55'51.~00 GR 448.000 5860.000 445.000 5870.000 GR 45~.000 5965.000 4b'3.000 5975.000. gR 449.000 7035.000 449.000 7135~000 GR ~60,000 8250.000 ,000 ,000 431.700 5617.000 ~3!.700 5777.000 440.000 5880.000 ,431.700 5897.000 452.000 6205.000 451.000 63!%000 450.000 7~85.000 4~J.vO0 7?!J.~QO ,000 ,000 ,000 ,000 ~H 5.000 .045 5704.000 .035 5996.000 NH ~50.000 .000 .000 .000 .OOO ET .000 52~.000 T~50.OOO 2.!00 .000 448.000 5B42.200 440.000 5915.000 {50.000 6435.000 ,~u.vvv U~.OOO ,000 ,000 ,045 6070.000 .035 6170.000 .000 .000 .000 .000 7.I00 5D8.000 6!90.000 .000 .055 ,000 ,000 ~(! 19930.000 55.000 '57'04.000 6190.000 t;R 454.300 1000.000 450.'~00 !040.000 "'~ 448. OOO 1220. 000 ~. 000 t.]2O. 000 gR 44%000 i~,'.~OO ,., L'-2 447.000 2540.000 4!7, ..'..900 ~070. 000 -SR 4~5. OOO ~70. 300 446, OOO GR ~.47. 000 4090.000 4~'8-'000 4150.000 "'" ~8.,~00 jl.:,O..)OQ .~o O 5400.000 '= ,-,", i":"~ OOn '.-" " ,~..,---.OvO ,,,: ....... u7:0.Oc, O ,m ^ ~" 437.:,'.00 ..:,1 :v,vOO 432.000 ...... 64tn OOn ,,.J,.OvO =~ qSO.'~vO 8720.90'.9 ~.~.vO0 800,000 550,000 ~8,000 !160.000 447,000 !~0.000 ,4~.~00 d~O.vOv .i46.300 32~0.000 ~47.000 ~460.000 ~4~.~00 {200.000 ~4].~'~ 5~0.000 %!B JO0 ?96.000 4~7.000 ~!~0.~00 %v.vO0 6650.000 600.000 .000 449.000 ll?O.OQO 450.000 I~0.000 446.2~ 2280,900 ~46.000 ~350.000 447.500 ..,W50.000 !~8.500 4660.000 ~8,o00 ........ 448,~v0 6050,000 ~SLO00 51%.000 ~,~00 5BAO,O00 .~53,0~0 NC .055 .055 .035 .!00 .300 .000 .000 .000 'A ..... ~.00 ~JOO.vQO ,- An0 Jolo.OOO 6540.000 2,~0 ,000 7.100 Xt '21560.000 ~!,O00 4939.810 5ZO0.O00 1600.000 1!50,000 !450.000 ,000 5R 460.000 ivvv..;vv ....... ' 0~0 i=l ~0n .... nna ~50.000 !480.000 4{9.000 ,~-n ,,n^ .000 .000 449.000 1210.000 {50.000 :u~O.O00 446,400 2~20.000 i45.000 ~60.000 447.000 ~8,~vO 4960.000 448.500 5704.000 xz~ =aa ~070.000 .449.000 6900.000 ~60.000 7350.900 .000 .000 .OOO ,OOO .000 .000 45~.000 {48.000 1800.000 uR ~0.~00 ~O.O00 4170,000 GR 4~1.000 4~20.000 ~52.000 ¢500.000 gR 432.700 51~.000 43~.~o0 5140.000 ~R 454.000 5~0.000 455.~0 ~00.000 ;R 453.000 5~30.000 45~. ~00 ~80.000 GR 453.~0 5880.000 4~.000 5920.000 gR 453.000 6270.000 455.000 6~. 000 449.000 ~50.000 447.000 452.000 432.460 455.000 452.000 453.000 460.000 27~0.000 448~0 3700.000 ~4": ~250,000 450,000 4820,000 452,~00 5180.000 432.400 ~0.000 455.000 5790.000 451.000 5970,000 452.000 5450.000 465.000 ~O[O.O00 ~9.OO0 3260.000 3800,000 ~47,000 3900.000 4280.000 45!,000 4S40.000 4~.I?,610 ~32,700 5020,000 ~O0.v~O 438,000 5220,000 5360,000 454°000 5460,000 58~0,000 4~I,000 6~50,000 ~52,000 6~0,000. 6540.000 .000 .000 NH 5.000 .050 1300.000 .060 5094.000 .035 5460.000 .09 66!0.000 .050 NH 67B0.000 .000 .MO ,000 .000 .000 .000 .000 .000 .OOQ Er .000 5094.000 ~780.000 2.100 .000 7.[00 5094.000 5460.000 .000 .000 II 22~0.000 2B.OOO 5074.~00 5460.000 BO0.O00 ~0.000 BO0.OOO .000 .000 .000 ~R 460.000 !000.000 449.000 !300.000 447.000 1750.000 448.000 !950.000 ~48.000 2~0.000 ~R 450.000 ~:n.o00~, ~. 450.000 ~670.000 ~9.000 4010.000 44B.v.~O 4070.~00 449.500 4370.000 GR 4~0.~00 4970.000 450.S00 5094.000 ~34.040 5!60.000 434.040 5220.000 454.040 ~280.000 GR 432.500 5320.000 435.000 5345.000 445.000 ~60.000 446.000 5380.000 452.700 5405.000 GR 454.500 5460.000 454,000 5870,000 452.500 63!0,000 452,000 6480,000 ~55.500 6550,000 GR 457.000 66!0.000 459.500 6630.000 ~6.000 ~7BO.OOO .000 .000 .OOO .000 r }!E~ ~D. EASE ~ATF. D NOV 76 L~.DATE3 MAY I?B4 E~OR CORR - 0!,02,03,04,05,06 MODIF!CATiO~ - 50,51,52,~,54,~,5~ IBM'P~-X[ V~SIO8 AUGUST !785 THIS RUN ~XECIJ~D 0!-10-90 TI D~TON CRElr](, - ENCROACHM~T T2 DE~TON CREEK - 100 YR DISCHARGE ?ROFI~ 13 DE~ON CR[~VK, TEXAS (DENC) Jl ICHECK INQ HINU IDIR SIB, T O. 6. O. O. .000000 NPR~F [PLOI PRFUS ~qrr,j ISE~H !5.000 ,000 -1.000 ,000 .000 I 0!-!0-90 16:40:39 METRIC HUINS Q ,~SEL FO .00 .0 O. 4b-3.120 .000 ~ ALLDC IBN ru,,Y-~,..m'"i~ACE .000 .000 .000 .000 .000 F HEC2 R~F.4SE DAT~ SOU 76 LIP?A.~ HAY · -.r,,,,g,,¢ ?:RR- 01, ...... '"'' MorliFiCATZON- 50,tI,52~,54,55,56 !~M-PC-X'.' 9~:SION. :hUGUST I785 THIS RIJ)') ~(ECU'FED 01-10-90 SU~HARY P~',IN, OU: C-ECNO C~SEL 18444.000 452.!2 18440.000 453. i2 !9~ZO.O00 452.25 19S30.000 453.2S t99:0.0:~9 452.25 I?~ZO.O00 457.2 21560.000 452,J9 21560.000 453.~ 22.:Y0.000 452.5~ ~o~v.O~O 45~.50 DI~SP SSTA D(DST STCPI. STC~ TOPNiD Q EI.M!N .00 ,t750,00 7046.00 5480.00 5585.00 3!57.20 20600.00 43!~40 I,~ 3Z50.00 ~85.00 5480.00 5585.00 I935.00 20600.00 431.40 .00 4000.00 =-i~ o~ ~=' ~n /~.~.o~ ~.o~ 5965.00 -5326.~5 20600.00 43!.Z0 .98 4000.00 5?65.00 5551.80 5965.00 1%5.00 20600.00 431.Z0 .00 5208.00 7084.74 ~04.00 6!90.00 1678.88 20600.00 432.00 .~ 52Q8.00 6190.00 5~04.~0 6170.00 ?82.00 20600.00 4~2.00 .00 4941.28 .94 4939.00 62Zg.OZ 4939.61 5300.00 ~,~.~-~.o^,v 4939.61 5ZO0.O0 635.4B 20600.00 432.40 328.90 ~ ~ ^ 432,40 ~06uO.vO An ~,q~a An ~106.97 5riva nn 5460.00 =-^ ~0 20600.~0 a~n ~n · 92 5094.00 5429.41 5094.00 5460.00 335.41 20600.00 ~2.50 SUmmARY OF ~:RORS AND SPcC~a~ NOTES 1 01-10-~0 16:~0:39 PAGE !7 FI.OODHAY DATA, DENTON CR._D'~,?..YILX~S P~FILE ~. 2 .... FLOODWAY STAT:ON WIDTH SECTION AREA. V?J. OC!TY ~ATM SURFACE ~_JAT:uN WITHOU~ D!FF.~CE WITH, D, OOE4AY FLOODWAY ~in nnn ,n~ VW6. ~ ~ 4~.I 452.! 1.0 :?YJO,OO0 1965, 16279. I ~ ~'" z:.,/~. ,ur 3.'I'5. 4855. NODI:ICATTON - 50,51,52.5Z,54,55.56 DM-PC-XT VEtS:ON AU~]UST RUN :.'.=~u'r ~ERSION OF .,E-:~BER I78~ * DATE 8/!7/90 T!~ !2:57:3 * [~OI~SOM ~ ASSOCIATES, INC. H~DROLOGIST AND CIVIL ~GINE~_RS 562? F,~ 1~60 ~ESI SUITE 314 HOUSTON, TEXAS ~069 .... ~n ~ ~ .... ~7~3) 4~0-47~ ENCROACHMENT MODEL FOR~ LEWlSVlLLE SI, DE OF FLOODWAY. SPLIT PAGE HEC2 RK! EASE 9ATE3 SEP ~ L~DA~J S?T THIS RU~ EXECUTED 8/17190 EPHOR CORR - ^, n- ~ MODIFICATION - TS DENTON CR~-K, - DANNENBAU~. SI~E 7~ !TRACE J3 VARIABLE CODES FOR SUMMARY PRINTOUT 1 43 50 ..'.).~ ~e~O 7000 ~H 7550 .... ','t ~J~O0 ~* ~li~ ~000 ~'~ ay AO~ 1~30 c~ 465 "'~ !!!0 .... n ~ ~n ~ .,o=~ k=n 5280 ,,.,0 l~O0 GR 450 21 gT 2 20600 15600 ~ .055 .~.-0=5 .035 .1 - =09 .... .05 ~H ~, .05 !300 .06 ~ ~ .035 5460 .vJ~ 66!0 NH 6780 El 5.1 7.1 7.! 5094 6780 5094 5460 Xt '22!70 18 5094 5460 800 400 900 ~R 460 I000 ~9 1~00 449 !750 448 1950 ~48 2550 GR 450 ,!950 450 3670 449 40!0 448 4070 449.5 4370 ...... Jvg? .... 5160 ........ ~0 ~n 4o-.~,~ 4970 450.5 ,-~ i ~ ~ 5520 ="~.~-, 5745 ~45 5760 '~ 454.5 5460 =i ..... 6480 '~ ~:R 457 6410 ,.~,... 6630 ~66 ~780 35 LPRNT NLIMSEC ;~%%;%%REQUES,TED SECTION -!0 -!0 454 5280 5694.28 450. 4170 5:80 6410 451.42 454 ~55 4240 5468.04 5940 6510 ~34.,~, -!780 5575 5970 6610 450. 5~25 6620 ;~/~. 7/?0 ;R NH. ×I ~R ~R ~R gR ~C ET X! ~R ~R ~R ~R 440. 453 · 055 5. 6690. 24700. 465. 45Z. 451. 452. 454. 455. 455. 453. .055 2557W 469.5 449.? 451 455 .~ 454,8 452, ~ 452 66~0 7070 7470 .055 ,055 5.~ 53. !000, I410, 2!80, :180. 4110. 4450. 4850. 5!70. ~I30. 6580. · 5,1 45 500 tO00 2000 2475.2 2742,67 3200 ::i700 4200 454 47O 4!88.16 7.1 5060. 462. 455, 450. 452, 453, 451. 456, 454· 452. 460. .0.]5 7.1 2495.2 ~0.~ 451.4 45~.4 436 455.6 452.9 452.4 451,5 6660 7239 7550 .! 7,1 5200. 1120. !~0. 2250. ~0. 4!88.!6 4480. 5000 · 5200. ~0~. 6670 · .I 7,! ?.742.67 6O0 1!00 2100 2570 2BO0 3800' 454 .3 4424.38 4187. 740. 462. 454. 452. 4~5.04 455. 4~1. 456. 45~. 452. 462. 24?4 700 4~.6 450.8 451.6 454.2 436.&3 454.7 452.7 452.2 6680 .055 3!0. 1140. !650. 26.30. 3~0. 4260, 45t0. 5060. 5240. 5800. 64!0. 6690. 4600 560 700 !200 1~0 ~00 26')J.2 2900 3400 3900 450 450 5060. 4187. 900. 460. 453. 45!. 435.04 454. 440. 4~. 454. 4~. 2494. 700 452.? 451.3 45!.5 454.3 434.5 4~.8 451.~ 451,9 _a: O0 7~0 !48~, 1230. !970. 29!0, 3800. 4350. 4780. 5140. 5390. = 8~0. 6480. 2Z43. 800 1300 !800 2300 2630 3000 3500 4O00 4500 5200. 460, 452. 451. 453. 453.~3 454. 433.9 45a. 451, 450.4 450.8 452,7 455 434,40 453.2 452.8 ~51.7 455.8 7000 7350 1300. rOB0. 2980, ~000. 4424.78 4800, 51~. 5430. 6050, 6500. 900 !400 !900 2400 2670 IlO0 3600 4100 4600 TI DEN[ON CRES~ - DA~ENBAUM SIDE r~ FcOODWAY - I00 YR DISCHARGE PROFILE T3 DENTON CREW. TEXAS (DCDAN) 07/!4/90 .Jr !CHECK IN~ NINU IDZR S1RT METRIC HU!NS 0 3 0 0 0 0 0 J2 NPRDF !PLOF P~US ×SECU ×SErJ( ~ ALLDC Q 0 iBW CP. NIH. ITRACE PAGE HEr:2 RELEASE DATa SEP B8 UPDAmTr~ SEPT !987 THIS RUN ~(ECUTED 81!7/90 12:.57: .7- ERROR CORR - 01,02,03 NnT.'-'- ~ .......... ~ Ar I~¢T HF ,'"m,',' -~rY, n.~ NUMB£R ~ '' ~ MESSAGE T.N ~DDnRq LIST DEN ;'ON 0~£!<. TEXAS · ¢J~M;~RY F'RINT~T SE~O ~.SEL Q DIFWSP · ~.~/0,000 4~,~8 ~0600,00 22~70,000 453,50 15600,~ ~800.000 452.78 20600.00 23800.000 ~"".~,~= l" IMO0.O0 ~4700,000 453.45 ~0600.00 ~4100.u~O 453.89 15600.00 .00 .92 .00 ,64, .00 .44 -%% ~5530.000 4.~.,57 20600.00 .00 ~5S0.000 4~4.-'0 15600.~ .~ ~..f~.. SPECIAL SUGARY OF c~,~:.,,~ ~NB UF_.RSI~ OF SEPT~,~,..R !788 ~ROR: 01, 02,0~ RUN DATE ~/!F/?O TIM~ !5: 7.~. $ HYDROLOGIST AND CIVIL ENGINEERS 562? ~ !960 REST SUITE 314 HOUSTON, TEXAS 7706? ( ~1~ ) 440--~78~ Fax ( ~ ~ 440-4~4. END OF BANNER X X XXXXX×X X~XX XXXXX X X X X X X X X X X X X XXXX~C.,XX XF~X X )CXXXX X X X X -:' X X X X XX X X XXXXXXX X~XX XXXXXXX 'ENCROACHMENT MODEL FOR COPPELL S1DE .~.O F FLOODWAY. HEC2 ~P!E~SE ~6TED SEP ~8 JP~A~J SD'T !9~? J! .,? DENTON CREEK - ,:o~peil SIDE DE,', CON "R~ ! EXAS ( DCDdCS ) 07/I 0 ~ n. 0 n. ~{PROF ?LOT P~VS ~oE~V XSECH ! 0 -! ~SEL F~ 452.5B :~t%tF~gUESTED SECTION gT 2 20600 HC .055 .055 .05 .I .3 . . ~^~ .06 5094 .035 5460 ..,~., .~ ET 5.1 7.1 7.1 5094 67~0 5094 5460 ..... 7 5n~; 5460 800 ~00 800 ,7~0 ~ ~ gR 460 !0~0 ~? !~00 449 ~,~ 4~8 .%0 448 ~ 450 ~°*'~...~u ~50 3,570 ii~. , 4n~O.. 448 tC,*e " ~ 1370 r~n ~ ........ ~I0 i~ .~480 6550 ~' 457 66!0 ;59.5 6630 466 6780 ~C .',,-'--. .... n'~~, ,1 .3 ,,u ~ .~,~ ~,i~8 O~ .035 569 ~.2,-q ,~= ,~10 .035 70..qO .0.55 '"' ' "~ "I 5467 .'~' 56'.'0 .., ?'z~nn -~? 66!0 7000 ~ .......... ...... !480 454 !590 ~53 ~, ~n '~ !850 "" 450 ?~ ~n ~,¢ ~ ~ : . ~0 :~,0 'il :0 :'.:~0 6?0 454 65!0 6420 GR MC NH NH rT ~R ~C El' Xt GR gR GR GR GR · 055 5. 5690. 24700. 465. 457. 4...,!. 453. 454. 455. 640. 455. 453. 455. ,0.55 · i J4 ~0 469,S 45! .56~0 7070 7470 ES. !%0. 14tO. 2!%. JlSO. 4110. 4450. 4850. 5!70. 5550. 4.I4O. 0 -..-'C,O · ,0~ tO00 1500 2000 24~,2 2742.67 3200 .37,00 4200 454 470 4!88. .5060. 462. 4.52. 45!. 452. 460. .035 7.1 460. ~51.I 45!. 4 436 452.9 452· 4 45! 6660 7239 7550 .1 5200. !120. ~0. 4!~8.16 4480. 5200. 900. 6~0. 6670. .! 7.I ~42.67 600 !600 2!00 2570 2BO0 3300 4300 440 454 .3 4424.38 41:,~. 740. 462, 4S4. 451. 4.52. 4.5"5.04 4~. 45!. ~56. 453. 2494. 700 455.6 450.6 451.~ {~4.~ 454,7 4S2.7 452.2 452.1 6680 7240 · U.JO 6690. 310. !!40. faS0. 4280. 5060. 5240. 5800. 6410. 6690. 4600. 560 700 !200 !700 2200 2900 3400 3900 4400 450 450 .5060. 5060. 900. 460. 4~. ~53. 435.04 454. 440. ~55. 454. 453. 2494. 700 452,9 45!.3 4~I.~ 454.3 4~4.5 453.8 452.2 45!.~ 451.? ,5700 7280 .03.5 5200. I2~0. 1870. 29!0. 3800. 4350. 4780. 5140. 5!90. 5850, 6480. 800 !300 1800 2300 2630 3000 3500 ~000 4500 454 5200. 460. 451. 453, 453.63 454. 4.54. 45!. 450.4 450.8 434.40 45~.2 452.8 451.7. 4~,~ 7000 .055 !300. 2080. 2980. 4000, /*424.38 4800. 5155. 5430. 60~0. 65,D. !400 !900 2400 2670 3100 3600 4!00 4600 Jt !CHECK !NO NINV !DIR STRT 0 5 0 0 0 32 NPROF [PLOT F?.~US XSECU 'XSECH HU!NS 0 ~C 455.50 ZTRACE ..... ~AT~ SEP HEC? RE! =.'~9= .. ~O ..... SEPT !~? THIS RUN ~<ECUTED tS: ~'nZ MOD[F~C~T~DM - SE~O 22.370,000 ~0.000 ~",~00 24700.000 24700 35~30 .OOO CIISEL ~32.38 452.98 453.47 4.54.20 20600,00 5000,~ 20600,00 ZO00,O0 20600.00 20600,00 50OQ.~O DiF~SP .00 .00 .49 .00 .50 ,00 .54 ~, E.~.L HFJTES o, ~-~-- ~ ~u^~n~ nUTSTDE ~CCEF'ThSLE R~HGE ..'I PLROPOSED FLOOD · PLAIN PREVIOUS FLOODWAY MODEL APPROVED BY FEMA SUBMZTTED BY DANNENBAUM ENGINEERING CORP. IN 1985 ,..'.,. CHANNEL, PROPOSED SPLIT FLOODWAY %--._; '-.-:. ! !'. .!