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HomeMy WebLinkAboutOrdinance 4265 ORDINANCE NO, 4265 AN ORDINANCE AMENDING CHAPTER 168: FLOOD DAMAGE PREVENTION CODE, OF THE CODE OF FAYETTEVILLE, TO ADOPT THE FLOOD HAZARD STUDY, PHASE II, PROVIDED BY THE U.S. ARMY CORPS OF ENGINEERS FOR USE IN MANAGING FLOODPLAINS WITHIN THE CITY OF FAYETTEVILLE; AND TO UPDATE THE FLOOD INSURANCE STUDY. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF FAYETTEVILLE, ARKANSAS: Section 1 . That Chapter 168: Flood Damage Prevention Code, Section B., of the Code of Fayetteville, is hereby deleted and the following shall be inserted in its stead: B. The Flood Insurance Study for the City of Fayetteville, Arkansas, dated July 21 , 1999, with accompanying Flood Insurance Rate Map, as may from time to time hereafter be amended, is hereby adopted by reference and made a part hereof as if set out fully herein. Three copies of said map shall be maintained in the office of the City Clerk C. The Flood Hazard Study, Phase II, provided by the U.S. Army Corps of Engineers, is hereby adopted by reference and made a part hereof as if set out fully herein. Three copies of said study shall be maintained in the office of the City Clerk. "0! AND APPROVED this V day of August 2000. APPROVED: y Fed Hanna, Mayor ATTES ~S By: Bather woo ni , City CleyW 0 1 0 NAME OF FILE: l%i5/1�1�//�ic2 A0 CROSS REFERENCE: Date Contents of File Initials - ree N "OD h r� FAYET EVILLE THE CITY OF FAYETTEVILLE, ARKANSAS 113 W. Mountain St. Fayetteville, AR 72701 Telephone: 501-575-8264 PLANNING DIVISION CORRESPONDENCE TO: Fayetteville City Council FROM: Sara Edwards, Floodplain Administrator DATE: July 14, 2000 SUBJECT: Adoption of Flood Hazard Study, Phase II In January of this year, the Corps of Engineers completed an updated Flood Hazard Study for the City of Fayetteville. Attached you will find a letter from the Corps addressed to Mayor Hanna which details the items included in this study. In order for the City to use this data, it is necessary for the City Council to approve an ordinance approving the new study as a supplement to the City's Flood Insurance Study which was adopted by ordinance January 7, 1997. H:I USERSICOMMOMDAWN712000CorrespondenceWood__memo.wpd • • 4 DEPARTMENT OF THE ARMY LITTLE ROCK DISTRICT, CORPS OF ENGINEERS Poar orPlcE eox eer LITTLE A •�87 REPLY TO anuary22000 ATTENTION OF Planning , Environmental and Regulatory Division ,JAN 2 6 2000 Planning Branch CIT Y OF FAYEiTEVILLE MiAYOR.'6 OFFICE Honorable Fred Hanna City of Fayetteville 113 West Mountain Fayetteville , Arkansas 72701 Dear Mayor Hanna : The following Fayetteville , Arkansas , Flood Hazard Study , Phase II , data are submitted for your use in managing the flood plains in your city . a . Flood Hazard Study Map ( digital original and one copy) . b . Flood Profiles ( originals and three copies ) . C . Floodway Data Table ( originals and three copies ) . d . Hydrology and Hydraulic Data ( digital and paper copies ) . e . Hydrology and Hydraulic write - up . f . Elevation Reference Marks ( four copies ) . g . Study Certification If you have any questions on this submittal please feel free to contact Mr . Conrad Battreal at ( 501 ) 324 - 5037 . y rely , ��/� / Ro r C . Hicklin Enclosures Chief , Planning Branch STAFF REVIEW FORM • X AGENDA REQUEST CONTRACT REVIEW GRANT REVIEW For the Fayetteville City Council meeting of Aucrust 1 , 2000 FROM : Tim Conklin Planning Public Works 5 Name Division Department �Q ACTION REQUIRED : (AD 00-26) Approval of an ordinance adopting the Flood Hazard Study, Phase 11, provided by the US Army Corps of Engineers for use in managing floodplains within the City of Fayetteville as a supplement to the previously adopted Flood Damage Prevention Code (Chapter 153 of the UDO, adopted by ordinance #4011 - January 7, 1997). COST TO CITY : Cost of this Request Category/ Project Budget Category/ Project Name Account Number Funds Used To Date Program Name Project Number Remaining Balance Fund BUDGET REVIEW : Budgeted Item Budget Adjustment Attached Budget Manager Administrative Services Director CONTRACT/GRANT/LEASE REVIEW : GRANTING AGENCY : Accounting Ma Date Internal Auditor Date ag I 1 q Oo Cit} Att rney Date ADA Coordinator Date 1 U � 1011- 00 Purchasing Officer Date STAFF RECOMMENDATION : Pursuant to Section F (2) of the City of Fayetteville Flood Prevention Code, the Floodplain Administrator hereby recommends that the City Council adopt the Flood Hazard Study, Phase 11 completed by the US Army Corps of Engineers and forwarded to the CityJanuary 2000 as the most current data available for managing floodplains within the City of Fayetteville. 7 T ion Head Date Cross Reference New Item : Yes tDartmen Direct r Date,� Prev Ord/Res # ' r t Services Director DOrig Contract Date : ate Orig Contract Number : FAYETTE ALE THE CITY OF FAYETTEVIEEE, ARKANSAS DEPARTMENTAL CORRESPONDENCE To: Tim Conklin, Planning Director From: Heather Woodruff, City Clerk Date: August 9, 2000 Attached is a copy of the resolution amending Chapter 168 : Flood Damage Prevention Code. The original will be microfilmed and filed with the City Clerk. cc: Ed Connell, Engineering Clyde Randall, Engineering John Goddard, Info. Tech. Scott Caldwell, Info. Tech. Jim Beavers, Engineering • CEIVED STATE OF ARKANSAS County of Washington ss. A G 16 2000 ACCTG. DErI I, JEFF JEFFUS, hereby certify that I am the publisher of THE NORTHWESTrARK61.i \SiTIMES; a daily newspaper having a second class mailing privilege, and being not 'less than four pages of five columns each, published at a fixed place of business and at fixed (daily) intervals continuously in the City of Fayetteville, County of Washington, Arkansas for ORDINANCE NO. 4265 more than a period of twelve months, circulated and distributed from an AN ORDINANCE AMENDING CHAPTER 168:NC FLOOD DAM-. established place of business to subscribers and readers generally of all AGE PREVENTION CODE. OF classes in the City and County for a definite price for each copy, or a fixed THE CODE OF FAYETTE- VILLE, TO ADOPT THE price per annum, which price was fixed at what is considered the value of the FLOOD HAZARD sruov, PHASE II, PROVIDED BY THE publication, based upon the news value and service value it contains, that at U.S. ARMY CORPS OF ENGIN least fifty percent Of the subscribers thereto have paid for their subscriptions NEERS FOR USE IN WITHIN Or recognized INC FLOODPLAINS WITHIN 9 9 t0 the newspaperOr Its a agents through news dealers over a THE CITY OF FAYETTEVILLE; period of at least six months and that the said newspaper publishes an AND TO UPDATE THE FLOOD INSURANCE STUDY. average Of more than forty percent news matter. BE IT ORDAINED BY THE CITY COUNCIL OFTHE CITY OF FAYETTEVILLE, I further Certify that tae legal notice attached In the matter of ARKANSAS: Sectional . Thee Chapter 166: ,^n yy �' n A ' 1 Q 4abs Flood Damage Prevention Code, Section B., of the Cotle of Fayetteville, is hereby delet- ed ted the following shall be in- was published in the regular daily Issue of said newspaper for sorted in its stead: P 9 Y B. The Flood Insurance Study consecutive insertions as follows: for the City of Fayetteville, Ar- kansas. dated July 21 , 1999 I with accompanying Flood insur- The first insertion on the da of 20 y-11—r ante Rate Map, as may from Y time to time hereafter be amended, is hereby adopted by the second insertion on the reference and made a part day of 20 — hereof as if set out fully herein. Three copies of said map shall be maintained in the office of - the third insertion on the day of 20 the City Clerk C. The Flood Hazard Study, Phase 11, provided by the u.S. the fourth insertion on the — Army Corps of Engineers, is hereby adopted by reference and made a part hereof as if set out fully herein. Three copies Of said study shall be maintained V Pub isher/General Manager in the office of the City Clerk. PASSED AND APPROVED this 1st day of August, 2000. Swom to and subscribed before me on this — day of APPROVED: By: Fred Hanna, Mayor ATTEST: 20 Clerk By: Heather Woodruff, City ( ((((((([ e04 Plkapsa otary Public rb:ias °�Cono�oyz�IO�L i My Commission Expires: o t coo c`LtLccc �� 7)tttA4 co «ccccc� _ Fees for Printing......................... ...`....................$ Costof Proof.....................................00......................$ 80 Total..........................................................................$ i FAYETTEVILLE, ARKANSAS PHASE II FLOOD HAZARD STUDY STUDY CERTIFICATION This is to certify that all work accomplished in the conduct of the Fayetteville, Arkansas, Flood Hazard Study, Phase II, was in accordance with sound and accepted engineering practices. This Flood Hazard Study included Cummings Creek, Cummings Creek Tributary, Town Branch Tributary 1 , Town Branch Tributary 2, Town Branch Tributary 3, Town Branch Tributary 4, Tin Cup Creek, Tin Cup Tributary, Town Branch Tributary 5, College Branch, Town Branch Tributary 6, Cato Springs Branch, East Fork Cato Springs, Cato Springs Tributary, West Branch, and Town Branch Tributary 7. AMES C. BATTREAL, P.E. Flood Plain Manager f [ azarcj, udy I C O � p i b x a N a X I �3 � C i C coo T m ti i %mac DEPARTMENT OF THE ARMY ��99 T� LITTLE ROCK DISTRICT, CORPS OF ENGINEERSMT7�LC �' RFI�iT�L MED POST OFFICE BOX 867 LITTLE ROCK, ARKANSAS 72203-0867 REPLY TO January 26 , 2000 ATTENTION OF Planning , Environmental and Regulatory Division ,JAN 2 b 2000 Planning Branch CI TYvF �EViLL� MAYOR'S OFFICE Honorable Fred Hanna City of Fayetteville 113 West Mountain Fayetteville , Arkansas 72701 Dear Mayor Hanna : The following Fayetteville , Arkansas , Flood Hazard Study , Phase II , data are submitted for your use in managing the flood plains in your city . a . Flood Hazard Study Map ( digital original and one copy ) . b . Flood Profiles ( originals and three copies ) . C . Floodway Data Table ( originals and three copies ) . d . Hydrology and Hydraulic Data ( digital and paper copies ) . e . Hydrology and Hydraulic write - up . f . Elevation Reference Marks ( four copies ) . g . Study Certification If you have any questions on this submittal please feel free to contact Mr . Conrad Battreal at ( 501 ) 324 - 5037 . Sinc rely�24��`-- i Ro r C . Hicklin Enclosures Chief , Planning Branch 1 FAYETTEVILLE, ARKANSAS PHASE II FLOOD HAZARD STUDY STUDY CERTIFICATION This is to certify that all work accomplished in the conduct of the Fayetteville, Arkansas, Flood Hazard Study, Phase II, was in accordance with sound and accepted engineering practices. This Flood Hazard Study included Cummings Creek, Cummings Creek Tributary, Town Branch Tributary 1 , Town Branch Tributary 2, Town Branch Tributary 3, Town Branch Tributary 4, Tin Cup Creek, Tin Cup Tributary, Town Branch Tributary 5, College Branch, Town Branch Tributary 6, Cato Springs Branch, East Fork Cato Springs, Cato Springs Tributary, West Branch, and Town Branch Tributary 7. AMES C. BATTREAL, P.E. Flood Plain Manager / 1 1 L FAYETTEVILLE , ARKANSAS Phase II Tributaries Town Branch 1 - 7 Cato Springs Branch Cato Springs Trib College Branch Cummings Creek Cummings Creek Trib East Fork Cato Tin Cup Creek Tin Cup Trib West Branch FLOOD HAZARD STUDY ii 1. TABLE OF CONTENTS 1. Introduction ....................................... 3 2. General 2.1 Scope of Work ................................. 3 2.2 Basin Description ............................. 4 2.3 Available Data ................................ 6 2.4 Previous Studies .............................. 6 3. Hydrologic Analysis 3.1 Design Storms and Design Floods ............... 6 3.2 Loss Rates .................................... 7 3.3 Hydrologic Models ............................. 7 3.4 Routing Procedures ............................ 9 3.5 Design Discharges ............................. 9 4. Hydraulic Analysis 4.1 General ....................................... 10 4.2 Existing Conveyance Systems ................... 10 4.3 Cross Sections ................................ 12 4.4 Hydraulic Models .............................. 16 4.4.1 Special Situations .................... 17 4.5. Water Surface Profiles ........................ 18 4.6 Floodway...................................... 18 5. Data Management .................................... 18 Table 1 Study Reaches ............................. 3 Table 2 Drainage Area ............................. 5 Table 3 Hypothetical Design Storm Precipitation ... 6 Table 4 Basin Characteristics ..................... 8 Table 5 Design Discharge .......................... 9 Table 6 Stream Characteristics .................... 11 Table 7 Surveyed Cross Section Station Locations .. 12 Table 8 Manning's " n" Values ..................... 16 Table 9 Data File Listing ......................... 19 1. Introduction The City of Fayetteville, Arkansas, has requested our assistance in preparing a Flood Hazard Study for Tributaries 1, 2, 3, 4, 5, 6, and 7 to Town Branch, Cato Springs Branch, Cato Springs Tributary, East Fork Cato Springs, Cummings Branch and Tributary, Tin Cup Creek and Tributary, College Branch, and West Branch in Fayetteville, Arkansas. This report presents results of a Hydrology and Hydraulics study to determine the 10-, 50-, 100-, and 500 -year flood profiles and 100 -year floodways for the above named streams. 2. General 2.1 Scope of Work This study involves determining the 10-, 50-, 100-, and 500 -year design storm rainfall and excess, developing corresponding design floods, and computing a 100 -year floodway. The reaches studied are shown in Table 1. TableIM j� r l Study, Reaches=`f= a yq ,.�'{ ss V��t .".W•..}e{. rPy1':t m. {. Ai^i1} I,iJte il� Y tT Study Stream Station Station Start End Trib 1 0+00 41+92 Trib 2 0+00 14+85 Trib 3 0+00 19+23 Trib 4 0+00 14+26 3 . 1 r Trib 5 0+00 33+50 Trib 6 0+00 41+96 Trib 7 0+00 17+45 Cato Springs 0+00 41+38 Cato Trib 0+00 14+12 East Fork Cato 0+00 90+81 Cummings 0+00 51+25 Cummings Trib 0+00 15+64 Tin Cup 0+00 77+30 Tin Cup Trib 0+00 41+25 College 0+00 85+70 West 0+00 10+08 2.2 Basin Description The city of Fayetteville is located in Washington County in North Western Arkansas. The drainage area for each basin is shown in Table 2. The drainage basins studied range from mostly heavily timbered areas draining into pasture land with typical rural development including single family dwellings, and small businesses, such as the Cato Springs basins, to mostly urban basins, such as College Branch and Tin Cup Creek. The other drainage basins studied combine heavily timbered areas with rural and urban development. C1 I All study streams directly or indirectly drain into Town Branch, which flows eastward through the southern portion of Fayetteville into West Fork White River. Cato Branch and it's tributaries, along with Town Branch Tributaries 1, 4, 5, 6, and 7 flow northward into Town Branch. Town Branch Tributaries 2 and 3, Cummings Branch and Trib, Tin Cup and Trib, College Branch, and West Branch flow southward into Town Branch. Drainage Ar-eas (sq. Trib 1 0.23 Trib 2 0.14 Trib 3 0.29 Trib 4 0.18 Trib 5 0.12 Trib 6 0.34 Trib 7 0.28 Cato Springs 1.66 Cato Trib 1.13 East Fork Cato 1.08 Cummings 0.38 Cummings Trib 0.21 Tin Cup 1.33 Tin Cup Trib 0.71 College 1.24 West 0.34 E 2.3 Available Data All of these streams are ungaged. No stream flow data was available for the study reaches. High water marks are not available. 2.4 Previous Studies No previous studies exist on the study streams. 3. Hydrologic Analysis 3.1 Design Storms The design storms required and developed for all study streams were the 10-, 500-, 100-, and 500 -year storm. Precipitation - depth -duration -frequency information for this study was taken from National Weather Service publications TP-40, and Hydro -35. See Table 3 fora summary of precipitation data. 9 tHypothet a.L Des gnStorm° Precipitaytiion .r 'T.T ^21 ita Y, y C� _. ..,r. Y �x �-avYi � r �te •iTp. \i- r i � w._ •, :rz�ra [_�.r(inches) .=t ;,� 'n, t' ��'�yc,. fa ,, }. T3.a '� N . ^aM1 [j tP'�`.N a..__-i 9e C� r• v- J 4 w C.. �, � �' ��v y-.-� _/ S C.Y L�Ya�'.'iYv I��:'J'�� IJ .r • - .CIS• Hydro -35 TP-40 Freq 5-mmn 15 min 60 -min 2 -hr 3 -hr 6 -hr 12- 24 -hr hr 10-yr 0.61 1.30 2.52 3.28 3.63 4.47 5.31 6.16 50-yr 0.78 1.66 3.30 4.25 4.68 5.69 6.91 8.03 100-yr 0.85 1.81 3.64 4.73 5.25 6.25 7.57 8.93 500 y 1.07 2.12 4.44 5.85 6.68 7.85 9.00 11.05 N 3.2 Loss Rates The SCS curve number method was used to provide the loss rates used for all basins except Middle Fork. The United States Department of Agriculture, Soil Conservation Service National Engineering Handbook, Section 4: Hydrology, dated March 1985, supplied the guidance for selecting the curve numbers. The soil survey maps in the Soil Survey of Washington County, Arkansas, published by the SCS in March 1969, provided the soil type classification for the basin. Soil coverage for the basin area was determined by planimeter or grid estimation. A wet antecedent soil moisture condition (AMC III) with a short duration storm was used as the starting condition to distribute the precipitation excess because of the short times to peak of the basin. 3.3 Hydrologic Model The Corps of Engineers' "HEC-1 Flood Hydrograph Package" was used to distribute the precipitation, to determine the excess, and to compute the discharges for the study basins. Table 4 contains a listing of the hydrologic coefficients used. All sub -basin areas were calculated by planimetering outlined areas on the USGS 7.5 minute quadrangle map. Basin characteristics required by the model were determined from a 7.5 minute quadrangle map and Modified Fort Worth Method Curves developed by the Little Rock District from known flood events at gage locations in and near the District. 7 Ll .A n 1 � i .� C'i # Tabl" 4---'C - ... L ' p c v', r, , a h ,Cr' a' ry Faye��lal ttrie'Easi nChracteristl.cs .v ` 1 W i .,%re I:..4e Sub Basin CN III Area (m12) L (mi) Lc, (mi) S,F (ft/mi) Ct 640 Cp Cp tp TBT1A 80 0.47 0.28 412.7 0.275 425 0.66 0.1 TBT1B 83 1.17 0.53 98.4 0.65 385 0.60 0.6 TBT2 83 1.23 0.66 164.3 0.5 380 0.59 0.5 TBT3 88 1.80 0.80 126.5 0.6 370 0.58 0.7 TBT4 84 1.14 0.59 249.4 0.375 390 0.61 0.3 TBT5A 87 0.45 0.24 392.5 0.275 440 0.69 0.1 TBT5B 91 0.70 0.33 112.9 0.6 400 0.63 0.4 TBTGA 88 0.81 0.40 303.8 0.35 405 0.63 0.2 TBT6B 90 1.23 0.72 100.8 0.65 375 0.59 0.6 TBT7A 83 0.57 0.22 166.5 0.5 420 0.66 0.3 TBT7B 85 0.85 0.43 137.3 0.55 395 0.62 0.4 EFC1 83 0.68 0.33 272.3 0.35 410 0.64 0.2 EFC2 86 1.61 0.53 111.6 0.6 375 0.59 0.6 EFC3 86 1.33 0.66 77.6 0.75 375 0.59 0.7 CSB1 82 2.23 1.12 126.8 0.55 360 0.56 0.7 CSB2 83 1.33 0.59 78.2 0.75 375 0.59 0.7 CSBT1 83 1.59 0.59 134.0 0.55 375 0.59 0.5 CSBT2 83 1.80 0.97 131.7 0.55 365 0.57 0.7 CC1 82 1.42 0.70 212.5 0.4, 380 0.59 0.4 CC2 81 0.40 0.19 64.4 0.85 420 0.66 0.4 CCT1 84 0.68 0.30 537.6 0.225 .420 .066 0.1 CCT2 82 0.80 0.45 147.7 0.5 395 0.62 0.4 TCC1 92 0.76 0.28 340.8 0.3 415 0.65 0.2 TCC2 91 1.57 0.80 152.9 0.5 375 0.59 0.5 TCC3 87 0.78 0.47 69.3 0.8 390 0.61 0.6 TCCT1 96 0.76 0.27 213.9 0.4 410 0.64 0.2 TCCT2 93 1.80 1.04 97.2 0.65 360 0.56 0.8 CB1 91 0.89 0.42 172.1 0.45 395 0.62 0.3 CB2 92 1.27 0.40 94.8 0.65 385 0.60 0.5 CB3 91 1.23 0.76 41.2 1.15 365 0.57 1.1 WB 88 1.17 0.66 65.8 0.85 375 0.59 0.8 LI 3.4 Routing Procedures. The Modified Puls routing method was used utilizing the normal depth storage routing procedure in the HEC-1 model. Routing steps were calculated based upon average stream velocity for each reach. 3.5 Design Discharges. Design discharges for all study were obtained from the HEC-1 output. Table 5 shows the design discharges used in this study. r n • w� .� k. xva , n?_ . t ' ,f. ;•, . ` Table 5 j$$iDeesign Dischar-gesi^n;= cfa Stream Name 10 -year 50 -year 100 -year 500 -year Trib 1 0-2570 248 352 404 561 2570-4192 140 201 236 365 Trib 2 0-1485 162 232 266 367 Trib 3 0-1923 307 425 481 644 Trib 4 0-1426 281 401 460 650 Trib 5 0-2070 190 255 280 370 2070-3350 116 158 183 274 Trib 6 0-2244 255 350 410 610 2244-4196 251 342 391 555 Trib 7 0-1180 412 567 642 878 1180-1745 242 347 399 569 Cato Springs 0-1112 2403 3357 3826 5171 1112-2280 2247 3242 3704 5083 2280-4138 1100 1591 1827 2521 Cato Trib 0-1412 1156 1650 1877 2563 East Fork Cato 0- 777 1066 1509 1730 2369 777-4239 1034 1461 1676 2293 4239-7455 829 1162 1323 1809 7455-9081 343 490 566 823 9 Cummings Creek 0- 708 469 668 770 1055 708-2420 487 692 789 1073 2420-3841 316 442 502 669 • 3841-5125 288 402 468 709 Cummings Trib 0-1564 175 253 291 406 Tin Cup Creek 0-2050 1693 2322 2592 3484 2050-3945 1700 2284 2549 3380 3945-6430 810 1093 1222 1629 6430-7730 462 621 703 983 Tin Cup Trib 0-2535 890 1194 1335 1751 2535-4125 590 777 873 1205 College Branch 0-1775 727 987 1100 1411 1775-4577 526 714 804 1049 4577-5110 1464 1931 2147 2731 5110-8570 765 1039 1172 1609 West Branch 0-1008 332 461 522 696 4. Hydraulic Analysis 4.1 General The hydraulic analysis consisted of developing water surface profiles for the study streams using HEC-RAS computer program with surveyed and estimated cross -sections. A Floodway was developed which increased existing 100 -year water surface profiles 1 -foot or less. 4.2 Existing Conveyance System The streams studied are mildly to steeply sloped, meandering streams with a considerable amount of vegetative cover on steep to mild side slopes. All streams consist of areas of pools and shoals throughout the study reaches. All streams have rocky or gravely stream beds with a moderate growth of brush and trees on 10 the side slopes. The over banks range from dense trees and brush to pasture land. Average stream slopes, stream widths, and depths are shown in Table 6. There are no signs of erosion on any study stream. z. t r fStream Characteristics xyA , '' Stream Approx. Stream Slope (ft/mi) Avg. width (ft) Avg. depth (ft) Trib 1 80 20-30 5 Trib 2 85 6 4 Trib 3 40 15-25 4-6 Trib 4 125 10-15 2-6 Trib 5 110 20 4 Trib 6 65 15-25 4 Trib 7 65 20-30 4-6 Cato Springs 45 30-40 6-9 Cato Trib 50 30 6 East Fork Cato 55 30 5 Cummings 85 20 4 Cummings Trib 80 15 4 Tin Cup 90 25 7 Tin Cup Trib 80 35 8 College S. 50 30 6 West 30 30-40 6 11 4.3 Cross Sections Surveyed channel cross sections with vertical control and detailed bridge descriptions were obtained for use in the HEC-RAS model. Surveyed cross sections were extended where necessary using USGS 7.5 minute quadrangle topographic maps. Estimated cross -sections were inserted when necessary. Tables of cross sections and locations by river mile are given in Table 7. --}M Y-♦.-• y no`»{ fy }iayji. :Surveyed Cross a f R aQ an. Y y:¢ 4 h1 t' n 1 i w AnY��: rM 5'S lh'.c F. Section�Station.-Locations'. ♦ Afkl F, hA +b ]'.^w.pg ... ..s ll IjIJX+t" Section Station Comments Trib 1/ TBT1- 1 1+07 2 10+78 3 12+00 Pump Station Rd. - 4 24+42 - 5 25+07 Old Railroad - 6 40+87 Hwy. 156 - 7 41+92 Trib 2/ TBT2- 1 0+41 - 2 11+70 - 3 12+77 15 St. - 4 14+85 Trib 3/ TBT3- 1 0+62 - 2 15+00 - 3 16+20 15tb St. - 4 19+23 Trib 4/ TBT4- 1 2+00 - 2 7+10 - 3 8+46 Old Railroad 4 12+86 Gravel Road - 5 13+44 Gravel Road - 6 14+26 Trib 5/ TBT5- 1 0+90 - 2 5+70. - 3 6+30 Gravel Road Is 4 13+90 5 14+40 20th St. 6 16+70 7 20+70 8 21+20 Cato Springs Rd. 9 29+00 Moved 60' u/s -10 30+05 School St. -11 30+54 Trib 6/ TBT6- 1 1+55 - 2 10+56 - 3 11+58 Old Railroad -3A 12+16 Walk -3B 17+65 Walk - 4 22+44 - 5 22+94 Cato Springs Rd. - 6 41+96 Trib 7/ TBT7- 1 1+00 - 2 2+60 lstn St. - 3 3+20 - 4 11+80 5 12+30 Arrowhead St. 6 15+41 7 15+70 S. Custer Ln. 8 17+45 Cato Springs CS- 1 0+00 - 2 4+20 Shiloh Dr. - 3 10+95 6 12+30 Hwy. 71 N. - 9 22+80 -10 41+38 Cato Trib CST- 1 1+36 - 2 5+51 - 3 14+12 East Fork Cato EFC- 1 0+83 2 16+25 - 3 30+02 193 -3A 30+85 Dirt Road - 4 44+33 - 5 44+82 Hwy. 71 B 6 58+85 - 7 60+48 Greenwood St. - 8 68+51 - 9 69+32 Irene St. -10 72+42 -11 73+36 School Ave. -12 86+60 -13 87+31 Skelton Dr. -14A 89+13 -14 90+81 Cummings Ck. CC- 1 1+89 - 2 20+63 - 3 21+11.5 lstn St. 4 38+41 5 51+25 Cummings Trib CCT- 1 4+55 - 2 10+63 - 3 15+64 Tin Cup Creek CC- 1 1+00 - 2 9+25 - 3 10+25 lstn St. - 4 27+50 5 39+45 6 40+25 Block St. - 7 42+50 - 8 43+30 7 St. - 9 45+25 -10 46+75 6CflSt. -11 52+40 -12 53+90 College Ave. -13 56+20 -14 57+70 Washington Ave. -15 62+80 -16 63+80 Huntsville Rd. 14 -17 68+50 -18 69+50 Rock St. -19 72+70 -20 73+90 Mountain St. -21 76+30 Center St. -22 77+30 Tin Cup Trib TCCT- 1 2+00 - 2 4+45 - 3 5+80 School Ave. - 4 14+70 - 5 15+70 RailRoad - 6 18+00 - 7 19+50 6t St. - 8 23+85 - 9 24+85 Prairie Ave. -10 39+40 -11 40+40 Gregg Ave. -12 41+25 College Br. CB-lA 1+00 - 1 7+70 - 2 9+30 15 St. - 3 17+75 - 4 26+60 - 5 27+60 11 St. 6 33+00 -7A 40+50 -7B 41+50 Old RailRoad - 7 42+20 - 8 43+30 RailRoad -10 45+00 RailRoad -11A 51+10 -11 51+90 Paris Ave. -12 54+00 6tn St. -13 59+00 -14A 62+60 Campus Road -14 63+10 66+30. Foot Bridge 15 69+30 Foot Bridge -15 71+40 77+10 Btw Leroy Pond Rd & Razorback Dr. -19 85+70 West Branch WE- 1 0+00 -lB 1+45 - 2 6+62 - 3 10+08 4.4 Hydraulic Model Water surface profiles were computed for the stream using the HEC-RAS computer program. Manning's "n" value ranges are shown in Table 8 for average stream conditions. Y. V{ J '• ' C• x"� ^� 'ser %"+-Ftm,. �z�'G'�s S r.?xrc<..�,.�f.v}�,1,. ` r 3- a•: 9 Over banks Channel Stream Name Min Max Min Max Trib•1 .05 .06 .04 .045 Trib 2 .055 .055 .04 .04 Trib 3 .055 .055 .04 .04 Trib 4 .05 .075 .045 .045 Trib 5 .085 .085 .045 .05 Trib 6 .05 .05 .035 .035 Trib 7 .07 .10 .045 .045 Cato Springs .05 .075 .04 .04 16 Cato Trib .065 .065 .04 .04 East Fork Cato .055 .065 .04 .04 Cummings .04 .10 .035 .04 Cummings Trib .04 .10 .035 .035 Tin Cup .07 .11 .035 .045 Tin Cup Trib .07 .10 .04 .045 College .05 .07 .03 .04 West .05 .05 .04 .04 4.4.1 Special Situations A diversion channel has been constructed between Tributary 6 and East Fork Cato Branch. The diversion channel provides relief for high flows at about station 42+00 and drains into East Fork Cato - Branch at about station 15+00. In the initial RAS analysis for Tributary 6, the diversion channel was modeled as the left overbank. The left overbank flow was assumed to be the flow lost to East Fork Cato. In the final RAS analysis, the diversion channel was removed from the left overbank leaving all remaining flow in the channel. 10-, 50-, 100-, and 500 -year flows subtracted from Trib 6 and added to East Fork Cato were determined to be 32, 48, 54, and 76 cfs respectively. A split flow situation exists with flow overtopping the left bank of Tributary 5 at Highway 265, station 21+00, and flowing into Tributary 6 near Highway 265, station 22+50. A rating was calculated assuming a length and depth of flow over the top bank, which was assumed to act as a weir. The computed flows for 10-, 50-, 100-, and 500 -year events were subtracted out of Trib 5 total flow and added into Trib 6 total flow at the Highway 265 bridge. The equation Q=CLH312was used to compute weir flow over the top left bank of Trib 5. "C" was assumed to be 1.5. "L" 17 used was 20, 25, 35, and 50 feet respectively for.10-, 50-, 100-, and 500 -year events. "H" used was 0.2, 0.4, 0.5, and 0.8 feet respectively. Depths were estimated from the overtopping cross section. "L" was estimated from the topo map. 4.5 Water Surface Profiles Water surface profiles were computed for the 10-, 50-, 100-, and 500 -year recurrence interval floods on each stream. 4.6 Floodway A floodway, which will pass the 100 -year flood with a maximum increase in the profile of one foot, was determined for both streams. The starting water surface elevation for the floodway calculations was obtained from the existing conditions HEC-RAS model results. .Method 4, in which the HEC-2•program selects the floodway widths by equal conveyance reduction, was used initially to estimate the floodway. The final floodway was determined using Method 1 (specifying encroachment stations), by modifying the results of Method 4 so as to approach the one foot increase in the water surface profile as nearly as possible, while maintaining realistic changes in floodway widths from one cross section to the next. 5. Data Management. Table 9 lists the data file names. The models are logged into the Little Rock District's HES book, "Record of Files for Computer Program Models", by study and stream name. Project files include both existing conditions and floodways. 18 ' �•" �' � ! ,ri-- t R' Datac%File liisting mr,gxr` 9 n Study Streams Project Files Trib 1 Tbtl.prj Trib 2 Tbt2.prj Trib 3 Tbt3.prj Trib 4 Tbt4.prj Trib 5 Tbt5.prj Trib 6 Tbt6.prj Trib 7 Tbt7.prj Cato Springs Csb.prj Cato Trib Cst.prj East Fork Cato Efc.prj Cummings cc.prj Cst Cummings Trib .prj Tincup.prj (existing) Tin Cup Tinfw.prj (encroachment) Tintrib.prj (existing) Tin Cup Trib Tintrib.prj (encroachment) Collegbr.prj (existing) College Collegefw.prj (encroachment) West Wb.prj 19 to fly�:qYt�4ji��39Cry,l�� �Bp ���[ FTh����rIFi rrrr apr+. t lj IMI!IIIPI!IPl!l!IPlPI!NIIIIFI ap I!!I!Ill!I!!IMI!!IMIP!I!!l!l!!b!llMIIII!IliIlINII!Nl!!I!!IIIP IrII9HI!H!IrIIIIII!II! II! IPiPili !I!!I!IIIII!!I!I!I!!IMI!!I!I!I!!!F! . . 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P. • q8 N. N A ��� a W N W 2 t W A -1 :g W W l, 1 , X �J yp �y a 19 1 l al 1 aRj �{ 4~1 t 'l b 4 8,. . ➢m .y T� " �., N:,3 -N 41:. 111 N N •Y}QyM• CA h (QAf] y� .tlyy F A� j t �1IN 19$x' YI a d 'yl V V pS.L i tug Y. aF a>- n -[[ NN pN� pN� NN W ONE 41 pNf ONE 4mmf � pN� NN 10 NN �V (N� W fp0 1N1� f0 (N� 41 UN fJ > Hit Y t {JN� W pAp�1 f0 V +1 WWW W V a pOp W m {O V 8+ N W W W" 0 0 0 o b + "; mO N N N _b a N N 8 NA M. J N J N MM + MM ! ! M± J ! N01 + Mp1 + N� + N + N J N + NN + N 0011 Y0WW11 >W f00 M W W W W N VW O N V+ pOW A N W m W L L 56 [[i G'. CC Oo O V VV O A OO 0qq1 V Co N Cpo O A pW O O 8 p O O 8 10 N pV1 Ei H+ O m+ W .: R.. lJ O N N > IJ O N a -'' fl fJ mVV mVV 0yp1 a W m W m VW X11 mV mV WV m Jm pW� V V W O N N V N V V V W V 10 a 88e 88 88 8 88 8� 8�1, V H J V V O O i ! p+p NW 0+� O + 1pVll + N p+ Op p+ •(Zi 8 8 O pV + 8 pO 8 a ++ + + ++ + (+� 0+� J + N N N + N + N pJ 8 !p 8 p! 8 pJ 8 L!.. W4 88 88 O 88 O fUli 88 88 �� 88 88yaa. N (N0 N (N0 p+1 0p0 q+ 0 fJ NNN N N N N NNN N + O + {+�+�+�+� 0p Op O O 8 8 :5 pV fl pO pO pO O O �1 V ` O 8 O 8 8 O O Sa, fill, a 9. e A® a JY At M '+1 I*ilI4t J �:�< ��'�<� _'mss V v a s -- - N 8m Cn 4 - W fl o b o + + N MM MM N N N N m V V N N ++ + O 3. 10 0) u v W a I.flN0� 0) 1)1 V Ol + (gip pro V all. 10 N O fJ fJ W Qi 001MM MM MM N YI N N NN N U•? • MM MM MM MM 88 88 88 88�Ai v �v tiff C) N 8 8 8 8 r• ij (a N IWA OI Ot 0) 0) N N + p+ pN Np +p + pN pN '•. L.., 88 8:8 88 A A N N ++ N N 88 88 88 88 8 8 8 8 A ii IiiIiitt!iP , pN+� :O QJa� O� �(l1J1i + 'a � . i• + °d' J � J � � y�f (�� {.✓ � � SR p ±{ O wOi ON N �q� qN O� N Of N 01' r. 01 Jp Ol r. !p O pJ O .( dbbi gyp �Y R•. 1GP� 1 + MM a J MM + n ! MM J ! N ! N ! MM ! + + M J J N ! MM J 0 ! MM J J J M ! MM ! J N ! N '• ��` V Ol 001 N > —M (M�y OI y Oo {M W V V L y yM� > { 41 N +yy $4 OVO b yTy L OV O W W �L�pp W V N V S pWppp Oap� fWJ yNy 0 0 0 0 b 0 0 0 0 0 0 ! kd y? In ! N ! y N J N ! N J yN a N + N ! N ! N ! N + (N� + N� a tN� J N ! yN� J N + N + 1 NJ + N ! 4 Nf J yN J ( N� J (N� ! N + V OI V A OI O>nl Onl Opapl N 1p fpWpD 0 W V H N N L fJ fppJ $ W V + IAiI N > f0 OI {aA{��i A OI N tp N �V�pp N IOA io p>p�� GI 01 pIpf� O tD lD N + N> N !t�1 a N+ W W Oo V 8> L+ OD N N N 1p V p pS. Q V J N 0 ! q m p O N - (0 o N (a N f�Jp yyy t�pJ N �'aMp �p 01 10 O fli Opp f0 M p�tn nMi Ci MM N N W a t0 8N V 1D $� 10 8II lO MW 8= MM 8 fJ 88 N y s Itlj. W 0 N N O N V N W + N:: O W MW W (0th + -. V V O N+ -a pOppop 'a > O Vi W 0 N O a a N 0 N Y V O O O G O O O O O S ,z... yy (✓s !po� !o rpo� J ! �!p ! J NJN Wy� + q!q 0 p!� O mJ Op mJ J ! ! 0 J 0 WJ (0 ! (00 ! (d (.1(s) pJ� Wp fOfp f!fpp N w W V 0 V t0 O (0 O pO 8 pOp 0 pO 8 pO 8 8 0) 8 V V O pO O pN 8 pNp 0 0 0 S S S S pN S S t• r a4 a MM MM •y+� MMJ! ++ d+ d+ MMN MM MM MM (N� {. N� MMNp (pO N N n S3 ro pp V V Vyi pN y!y� pN pN 8 O V O lO N pVo b pVo b 00 N N pOp 8 pO 8 8 p O mp pmp : N N O O 4 A 8 W W V O O O N + J N N N N N N N yNy�� O pNp 10 $ N O� .- N 8 S 8 8 8 8 8 l'. auI of25° PP u.u. tWO A a a N + o w�i J N N {MN P4� N NN N N r r{O 1s0 OO b nCI V V 1 V Oo�,1J�So N 0f 00 10 O V N COW C oo. 2 V A a -I 40 MM P4(0 (00tDy V N VA V V V N 8 10 ++ g N It tab. N— {J' N W r P4(0 .a N (11W P tp ((pp �pJp 10 10 �p �1 rp b �O ,i0Y 88 88 8� O O O A N 8 8 8 8 8 88 88 '0 88 88 s._ MM MM MM M4 (0 V S MM O 1I V V 0.0 V V 00 00 A W $ Oa- 00 8 8 N N N N N V V V O V 8 8 8 8 HEC-RAS Plan: floodway River: Cummings Creek Reach: Reach I i Y CR O. 7 MED L C dEFYaKfL W3. -+1.:.J c 11 �� • 1 1 1 :c aasii - •v. 1 x...:�af 11 1 1 • • 1 IG . e `N� ; 11 �� I d' 1 1• 1 t& .. x x.SIIIW': III mo ...,...]C®CC- 11 rC®� CUM IINGS CREEK Fayetteville, Arkansas Flood Hazard Study Phase II SIP 1/2 HEC-RAS Plan: floodway River: Cummings Crook Reach: Reach 1 (Continued) CUHHMGS CREEK Fayetteville, Arkansas Flood Hazard Study Phase II SiP 2/2 HEC-RAS Plan: floodway River. Cummings Crk Tr Reach: Reach I R -gRFier.Sta To' W Ii Oit'. Area ".% '31IdTotet`3 W.S Elev yBase WS< JProf Oeffa WS. Ce-N \ . a.�° d tt �. J r R i rv�. . a; ,. .�..:A Q. r R!5 'fit {� :t�;a5a`• ft ..�..:. :AJ (ft)I Reach`tk O ;t 'a 213.34 107.00 2.72 1208.85 1208.85 Reach 01 18.00 44.60 6.52 1209.85 1208.85 1.00 Reachl <. < f 32;' 91.43 61.06 4.77 1210.77 1210.77 ReacMMfr:tt"((f[[`. 132�ppa°pp 84.00 96.93 3.00 1211.20 1210.77 0.43 I .. Reach,t"' 4$5"°'r:'i 285.49 130.88 2.22 1214.97 1214.97 ,Re ch�it'e:•�x'ai° 455` a`s 28.00 42.00 6.93 1215.67 1214.97 0.70 Reach 1 rt 1063 `K ': 241.33 109.91 2.65 1223.34 1223.34 Reicch V , a' 1063:2�W-•<:`„i 18.00 41.76 6.97 1224.20 1223.34 0.86 Reach'1 " 15641 189.84 107.62 2.70 1233.26 1233.26 Reae1C1 = 1564- 16.00 34.75 8.37 1233.51 1233.26 0.24 CUNNINUS CREEK TRIBUTARY Fayetteville, Arkansas Flood Hazard Study Phase II S2P Li 9 C HEC-RAS Plan: fw RNer. Town Branch Tub Reach: TOT? TaTI Reach! f-R1ver Sta,' I5Top Wd h"Act! "�°?Area, LtVel,T' .; zg4V:SiEIev . isase"WS"'. EProf'DefaWS'& J a wan » �° � ft)C el ,� x.l, ft : 4l � �. ft/s 6f% bI �':,2`a \ tt�.,,� ft R &J .. ft1�.: TBT7 . . 000.. 30.12 57.31 7.05 1186.28 1186.28 T'BT7. u9 0DO 4 38.39 91.72 4.40 1187.28 1186.28 1.00 TBT7t*4' 107-e•._,.- - . 32.44 65.72 6.15 1188.05 1188.05 T74 ,. ;:S' 107, -'! 30.91 60.11 6.72 1187.87 1188.05 -0.18 frtht71k 36.53 55.13 7.33 1194.57 1194.57 T'8T7-'572�`# 24.00 56.37 7.17 1194.77 1194.57 0.20 TBT7-' w 1078•" 42.85 84.00 4.81 1200.22 1200.22 7'8T75'::'' t078`:'= 39.74 81.55 4.95 1200.16 1200.22 -0.06 L�c...a .ti°tiw�.� TBT7: " "e. ' 1148 " 14.00 68.02 8.18 1200.43 1200.43 TBT7,I: ,.A . 1 t 48 -:"` -- < 14.00 66.47 8.23 1200.41 1200.43 -0.02 [T877- T' 1200 ;p;`:$4,,.�` I Culvertt b s"c\T: 1BWt 12431.`3°~``' 24.00 156.10 3.19 1203.21 1203.21 TBT7 kF':, 1243'`.„ 24.00 131.79 3.19 1203.21 1203.21 0.00 %7877",`,i 1289s, 61.44 105.38 3.83 1203.22 1203.22 TBT7°Sgt 1289ea 31.00 87.64 4.61 1203.21 1203.22 -0.01 TBT7 I826flM 27.02 50.56 7.99 1210.34 1210.34 TBT7y� 182fi 24.00 49.60 8.15 1210.32 1210.34 -0.02 A 5 .. TBT7-. 2442'W 24.81 60.37 6.69 1219.25 1219.25 ;TBT7 2442., 25.00 61.40 6.58 1219.29 1219.25 0.04 TBT7-' w- 2477i9 26.21 59.72 6.94 1219.63 1219.63 TBT7 ' 2477 26.30 60.39 6.87 1219.65 1219.63 0.02 TBT7'tr �'., _ 2507 7j Culvert . ,Iye�A. .M C F'S T74" *541i?lt 373.56 366.02 1.36 1222.19 1222.19 TBT7`e 25414p ,'^.§ 138.66 377.05 1.07 1223.11 1222.19 0.93 .::... is ___fit TBT74. a 2570; LMt 39.64 85.35 4.73 1222.10 1222.10 TBT7 : 257QSfl. 37.00 120.56 3.35 1223.05 1222.10 0.96 TBT7q " - 78.68 51.98 4.54 1232.45 1232.45 TB 3206 , 24.00 34.78 6.79 1232.28 1232.45 -0.17 isna 3943S 2298 34.08 6.93 1246.85 1246.85 TTBT7fl394�W 23.59 36.11 6.54 1246.94 1246.85 0.09 TBT7 z54G14ffi 14.00 35.80 8.16 1248.97 1248.97 IBT7,, 4046, _ 14.00 35.81 8.16 1248.97 1248.97 0.00 ` TBT7 : 57ja Culvert ,6 .., y::Y is✓,�,t TOWN BRANCH TRIBUTARY 1 Fayetteville, Arkansas Flood Hazard Study Phase II S3P 1/2 S • HEC-RAS Plan: fw River: Town Branch Trib Reach: TBT% (Continued) R Fthrer§la • a Top Wckb Aet.; m Area. s c YeliTotf m S..ElevBase,WSi mw m .- a T rof Deka WS.� , (ft) t#S!jjY sq q_.....ft...,Jd` FtI ft t -ft 41 31927 284.56 0.86 1256.80 1256.80 TB17 'fB- T7� 4125 125.00 305.14 0.77 1257.72 1256.80 0.93 4t3fi 53.63 . 62.05 3.80 1256.72 1256.72 �:l 0.99 TB!}7 46 86.34 131.40 1.80 1257.71 1256.72 ST7 .. f92 Lie 92.16 69.67 3.39 1257.75 1257.75 iBt7 ' '4192'.b °s, M 12.00 27.41 8.61 1258.27 1257.75 0.52 TOWN BRANCH TRIBUTARY 1 • Fayetteville, Arkansas Flood Hazard Study Phase II H3P 2/2 HEC-RAS Plan: Ni River. Town Branch Trib Reach: TBT2 ..... ♦ . •. jTx . t r ♦�. ✓ .. ♦ e♦ j YM1b 1YY . ♦. . Reach '�RlverSla`c- �'.Top;WiRti Acts Area$, �,Ve1;Tolai � - W.S.Elevx �Baae WS$ Piol DeRa.W§ «. r T: ice. C? R 4 fi �::' ®1. ftts :`F,` .,x;z ft °. - R i fl S ___ TBT2 .sl 000iIt 20.10 39.72 6.70 1190.15 1190.15 1512 ?! 00022r 22.00 61.40 4.33 1191.15 1190.15 1.00 NSF 1. _.l csn C, 041": ° � , 20.73 41.88 6.35 1190.86 1190.86 T2'- 04t`" -")';e(; 22.00 51.71 5.14 1191.31 1190.86 0.45 TBT2 "{*`- 316 W °, • 0$ 100.59 69.66 3.82 1195.21 1195.21 TBT2- ;- 316 ' -1-:,` 75.00 54.91 4.84 1195.05 1195.21 -0.16 •.TB «:'` 700 ;.'� T2=. 34.56 49.55 5.37 1200.35 1200.35 TBT2 .'t 700 t' a 46.86 63.32 4.20 1200.68 1200.35 0.34 TBT2' C, 1170,;°. 77.45 62.92 4.23 1206.91 1206.91 7BT2r"" 1170 -* 54.18 50.84 5.23 1206.79 1206.91 -0.12 TBT2:..'• 1238 14.00 67.56 8.07 1207.54 1207.54 TBT2 1238 % -._a 14.00 73.38 7.67 1207.67 1207.54 0.12 1812 ^ 1277 -.. Culvert TBT2" ": ^ 1313.:::?'in 290.57 626.88 0.42 1212.49 1212.49 TBT2 `ra: `: 1313 : *7:zs 40.00 184.30 1.44 1212.54 1212.49 0.06 TBT2:==aap( 1328•♦*• 265.09 510.95 0.52 1212.49 1212.49 TBT2; z,n 1328' 61.00 229.86 1.16 1212.56 1212.49 0.08 TBT2'-` 1485.*! 249.74 357.16 0.74 1212.50 1212.50 1812 ;; 1485 <t! 64.00 192.22 1.38 1212.60 1212.50 0.10 • TOWN BRANCH TRIBUTARY 2 Fayetteville, Arkansas Flood Hazard Study Phase II %4P HEC-RAS Plan: 1w River. Town Branch Trib Reach: TBT3 ^:^--Reach.: River Sta.A.c:7op Wdtti-.4ct. Mai: ' W S.:Ele&& Baie WS's '::Prbf Delta WS". ,:Vel'Totel'. " - 5':r, i?:; ft ". a.<a TBT3 000 .: ':.:;e 86.77 100.28 4.80 1191.05 1191.05 •TBT3 - 000 -:-:, 31.00 108.57 4.43 1192.05 1191.05 1.00 SIM. • T8T3a:. '' 062�'- 83.05 98.05 4.91 1191.54 1191.54 TBT3 -, ,. 062:4Zh 31.00 98.73 4.87 1192.25 1191.54 0.71 •.•, BT3 400'-i':h•;,': 75.21 131.98 3.64 1193.53 1193.53 400 r0: -^r"'. 7A 21.00 81.43 5.91 1193.88 1193.53 0.35 TBT3 ': 1100 >`"hj 33.24 62.17 7.74 1199.87 1199.87 TBT3 .` 1100'=P'Y 35.00 68.56 7.02 1200.06 1199.87 0.19 TBT3 .-.. 1500 -' :'- 33.34 83.93 5.73 1204.54 1204.54 TBT3 - . 1500, ' "•`' e' 22.96 75.04 6.41 1204.49 1204.54 -0.05 T8T3-::..•,:-. 1564^t 29.55 138.42 3.81 1205.18 1205.18 TBT3 .':' ;- 1564: r: - :. 25.00 132.67 3.85 1205.25 1205.18 0.07 TBT3"' . � 1620=• k' sO Culvert Lc TBT3 1676^�'.° 41.00 177.39 2.71 1208.80 1208.80 TBT3 - '.:' --• 1676'.: °;=' 19.00 134.40 3.58 1208.75 1208.80 -0.05 TBT3 1697 ;'-4 28.53 77.68 6.19 1208.59 1208.59 TBT3 . .'- 1697+"d'p'- 14.00 56.70 8.48 1208.45 1208.59 -0.14 : TMT3 - . 1923 • J 29.90 59.97 8.02 1212.11 1212.11 TBT3.- 1923`-- 30.28 61.56 7.81 1212.16 1212.11 0.05 TOWN BRANCH TRIBUTARY 3 Payetteville, Arkansas Flood Hazard Study Phase II ,5P HEC-RAS Plan: tbt4 Rker. Town Branch Trib Reach: TBT4 ReachS; RrveiSfai TopW ttiAct ?'Area::-i' AVe{tTolal W:sEf�1 Base r "- - WSJ P, ioi Oeita WS�� +r 2t R!S & .•(R14S R TBT4 .. , 000ta 54.27 107.38 5.11 1193.92 1193.92 TBT4`'..:-. oo . `N 20.00 83.33 5.52 1194.92 1193.92 1.00 TBT4 °°..�_. 2ooSS 54.31 107.64 5.11 1198.72 1198.72 :TBT4='.vim 200= t .. 20.00 58.88 7.81 1198.50 1198.72 -0.22 9 t�2°s TBT4 t3 500 .. .. 100.37 115.29 3.99 1205.55 1205.55 T4ZiA:M 500`. 20.00 55.51 8.29 1205.38 1205.55 -0.18 TBT4 710'1` W.. 80.32 112.52 4.09 1209.03 1209.03 TBT4_• 7idEL 55.00 115.91 3.97 1209.45 1209.03 0.43 TBT4^,r ' : 602 ":,kt.i'�,'. 87.83 98.56 4.67 1212.45 1212.45 78T4;: 802 20.65 50.91 9.04 1212.11 1212.45 -0.34 TBT4' t ti 846;, ",$ Culvert ;;end she;; TBT4' 886 i + ' 205.00 4116.85 0.26 1222.18 1222.18 TBT4'w 8861 80.00 764.32 0.60 1222.18 1222.18 0.00 932lSS9 178.26 527.94 0.87 1222.17 1222.17 TBT4=.. 932 35.00 282.02 1.63 1222.15 1222.17 -0.01 la :TBT4Y'1 ionVi1S 149.32 566.97 0.81 1222.21 1222.21 TBT4"T - . ' 107 55.00 309.31 1.49 1222.24 1222.21 0.02 1814$ * -•i246 1246, _ 150.22 361.54 1.27 1222.26 1222.26 TBT4* i2461C8& 50.00 205.11 2.24 1222.33 1222.26 0.07 TBT4°X'- 12751 109.76 223.33 2.06 1222.29 1222.29 TBT4ak "•. 1275 90.00 220.47 2.09 1222.43 1222.29 0.14 4 Y, f.,a: tom:` -..:4 .: TBT4"'-, t`' 1286`'.c,�"< Culvert TBT4-¼' 156.63 327.58 1.40 1223.76 1223.76 .18t44> 1^^3DV5y0�,:,��,�<.t 95.00 280.09 1.64 1223.91 1223.76 0.15 y��.g TBT4• - 132$a,� 242.14 177.06 2.60 1224.96 1224.96 TBT4 35.00 71.13 6.47 1225.70 1224.96 0.74 TBT4 -'t44M Culvert =TBT4, ;1355 246.23 427.15 1.08 1225.78 1225.78 TBT4 - ;1356 35.00 93.09 4.94 1225.99 1225.78 0.21 TBT4 - ,1882 214.83 179.18 2.57 1226.19 1226.19 114 .I382.- 35.00 83.91 5.48 1226.28 1226.19 0.09 �i.bni... TBT '1,4261 264.41 599.66 0.77 1226.59 1226.59 TBT4' -:'4a i426M. 35.00 138.87 3.31 1227.05 1226.59 0.46 TOWN BRANCH TRIBUTARY 4 Fayetteville, Arkansas Flood Hazard Study Phase II 86P A S HEC-RAS Plan: FW River: TIN CUP CREEK Reach: TIN CUP k��^!"'' 1'"'"` -�--1`'�-E. 3L Li 1T:J o1!yl +�y •� .... :.,:n.a'��rc gyp-- Li .e S;w M 11Ti C 1 I 1 �� P : • 1 1 1 11 1 I I _�� as .'y°7°7 :1 11 ®i Ic • ®i . ®i •w'\:'"®1. ®' : 111 12 .• I: .• • 111 .i���®®� . ... ® I rl .. •R14i� r t ®����� ••fir "�r�•... E�' .••• 1. 1���� szIflZ ____�_ TIN CUP CREEK Fayetteville, Arkansas Flood Hazard Study Phase II S7P 1/4 HEC-RAS Plan: FW River: TIN CUP CREEK Reach: TIN CUP (Continued) C yy�. iH�MPIYi l.•\�y4 .lra Yrr��!�Y.���xw " '-•-r ' 1 I I �.. s, �.w �!•„��'e4�� CC � . ..1�..'�.: 1 Z fl`.'`-.`. ht�8 111 1 1 1 I • ;_.t..,&;. am♦ _____® u7 hiF, Vii. . i•'3t'.' ........ ____ .®Cr®® 1 ® cl lYiyi 3iHiLVASD • jlnL .M MLV 1 11 ®CCT11 •�..'''� 11 ® 1 1 m Sj1JtMIJ¢¢ ^ 11C 1 I w `... . . .... fir........ .: 11 ,;ir® 1 1• TIN CUP CREEK Fayetteville, Arkansas Flood Hazard Study Phase II SOP 2/4 HEC-RAS Plan: FW River: TIN CUP CREEK Reach: TIN CUP (Continued) D T"' d61°Act. deA1tt Eelt & kw.sao 8x88, ahol,Delta r w TIN; llP.' 5820 172.63 262.47 4.66 1276.05 1276.05 TIICCUP ; 5820' 45.00 139.56 8.76 1275.86 1276.05 -0.19 TIN GUP. 5724x' 3200 374.75 6.69 1277.02 1277.02 T,IN GWP ; 3200 211.45 5.78 1277.92 1277.02 0.90 TIN CUP Culvert t.N CUP.. 581 304.36 1469.13 0.83 1281.15 1281.15 52.00 380.93 3.21 1281.27 1281.15 0.12 N CUt? 274.63 578.05 2.11 1281.06 1281.06 7JN GUP � 45.00 228.24 5.35 1281.14 1281.06 0.08 NICUP 6280 47.04 133.41 9.16 1290.76 1290.76 TINiGUP1n 8280,. 40.00 13219 9.24 1290.79 1290.76 0.03 1]MP* 6357aL11 100.68 206.37 5.92 1294.32 1294.32 N CCIPp 8357_ 45.00 140.33 8.71 1294.27 1294.32 -0.06 p TINwCUP 6380 Culvert TItJ:CUP.f .4 6403 ::, 104.09 209.34 5.84 1294.82 1294.82 TIN7CU ; 640.3; . 60.00 222.23 5.50 1295.80 1294.82 0.98 N$USJ6PPI 44.50 126.70 9.65 1295.94 1295.94 TiIN1C11P G?13Q 44.78 128.30 9.52 1295.97 1295.94 0.04 21.40 68.95 10.20 1306.06 1306.08 i1N CUP.�g. 6950 21.40 68.97 10.19 1306.07 1306.06 0.00 +nb h1 N 6925�t'a 15.29 61.78 11.38 1307.92 1307.92 TINCUP 15.29 61.86 11.37 1307.92 1307.92 0.00 TI , EtJ culvert TIN;GI7P, 69 26.00 173.08 4.96 1312.29 1312.29 TiIN CUi , 697 26.00 141.37 4.97 1312.28 1312.29 -0.01 N`,G 700Ft 53.20 200.01 3.51 1312.66 1312.66 IN�Cf1P 36.00 193.75 3.63 1312.68 1312.66 0.00 71NAUP.9 7007 34.16 142.11 4.95 1312.58 1312.58 iarrcu 7 34.18 142.25 4.94 1312.59 1312.58 0.00 TIN Gl1..: 701 34.16 142.11 4.95 1312.58 1312.58 Itd CUPS 78541.0_34.18 14225 4.94 1312.59 1312.58 0.00 TIN Cl UP> .34.16 <TQttt R 34.31 143.15 4.91 1312.61 1312.61 I GUP�' TU 34.33 143.29 4.91 1312.62 1312.61 0.00 TIN CUP CREEK Fayetteville, Arkansas Flood Hazard Study Phase II 07P 3/4 HEC-RAS Plan: FW River: TIN CUP CREEK Reach: TIN CUP (Continued) - ,.,. ta1d1...,;+ . _.1wc•itIt.I I1rVJ' y F 4 p' • �\ h +1 ♦♦ = i - 1 �LLF. .� .� :{1_�IW ff �.....`�.a w.ilA1�aLYI.L��..._Q1i_rM L,K3� Yi R ya ���H VM�w..a rCC j4' TTT4 1 a e®______ • I.A. �Owi-r'Yj® /: / ®®®- --r 1.•. C® 11 ®_®_® 111 1 Mn fr1 rr®® {giW!W�1�,�a5j i i Liai4r i�N I cr®® / 11 -a FELLS ncrnnci :nnrr T1 .1 &$�b« < C 1 TIN CUP CREEK Fayetteville, Arkansas Flood Hazard Study Phase II .a7P 4/4 HEC-RAS Plan: ex River: Trib #5 Reach:. • ':.Reach.- :-RiverSla'TopWdhAct" `Area%aC"rVelTotal'• W.S.•Elev .BaseWS; <Prof:Delta WS''S 0 ".° 47.39 64.55 4.34 1202.06 1202.06 0'' .; a° 52.15 114.65 2.44 1203.06 1202.06 1.00 • o: 90. H'.&2. 46.93 61.05 4.59 1203.49 1203.49 90::-. -.'nz'_ 46.15 55.25 5.07 1203.36 1203.49 -0.12 ..-. ......P _.� `.:: N' 570 59.42 67.61 4.14 1210.12 1210.12 -- 57p: '`• '" 21.44 54.72 5.12 1210.44 1210.12 0.32 `..E 620- - `- > - 64.82 89.45 3.16 1210.91 1210.91 620 67.30 105.79 2.68 1211.15 1210.91 0.24 . 630. "BR D'^: ` 59.89 93.23 3.03 1210.97 1210.97 ' .' •":- 630''-BRDmt' 30.06 103.64 2.72 1211.18 1210.97 0.21 . 630 BR U.::, 53.14 79.65 3.53 1211.02 1211.02 630- BR-Ui.' 9.56 88.09 3.19 1211.26 1211.02 0.24 • 640 ; ` 64.39 87.03 3.24 1211.12 1211.12 640'-:.'.�:.t�__ 67.08 103.54 2.74 1211.36 1211.12 0.24 665 i; 68.39 96.64 2.90 1211.27 1211.27 '->-��- 665 ?,tr=.'= 25.81 64.57 4.34 1211.42 1211.27 0.15 e , 710 ✓'='`e'.:>aa' 42.62 44.16 6.34 1211.61 1211.61 `;`" 71o:.!:tr 24.83 42.87 6.53 1211.71 1211.61 0.10 -' 725-2.''�,a'» 42.52 96.64 2.90 1212.37 1212.37 .'. 725 t<:',ie 42.80 98.34 2.85 1212.41 1212.37 0.04 - • '- 735 -. T! 42.78 98.21 2.85 1212.40 1212.40 `- 735: ,d> N: ; 1? 43.04 99.83 2.80 1212.44 1212.40 0.04 . 750 ":- ' 43.04 44.45 6.30 - 1212.40 1212.40 25.17 39.15 7.15 1212.33 1212.40 -0.07 1390. H.k. ≤`:?; 43.98 66.56 4.21 1224.37 1224.37 =. 190' :-: 44.40 69.38 4.04 1224.43 1224.37 0.06 7:� -;w 12.00 49.87 9.06 1226.38 1226.38 1418', '_z=≤,piS 12.00 41.91 9.07 1226.38 1226.38 0.00 t t 1440 _q�« Culvert :'_.;9..✓,et feN 1462'A,g 16.00 198.83 4.94 1227.92 1727.92 t1. „ 1462:3 - 16.00 75.45 4.94 1227.92 1227.92 0.00 .. �}' j5*4 e 191.51 263.05 1.06 1228.27 1228.27 1465a'^ 31.00 91.52 3.06 1228.17 1228.27 -0.10 N 167 482.92 291.61 0.96 1230.48 1230.48 TOWN BRANCH TRIBUTARY 5 Fayetteville, Arkansas Flood Hazard Study Phase II $9P 1/2 B HEC-RAS Plan: ex River: Trib 15 Reach: . (Continued) `i- Reach7.'. `--^RiverSta �lToptNCttiAct'' - '1Area;' %WlTotig f:W.S:£lev7' eease.WS' Po1;tk`4' w ' . - 1670 -� .:.' &tt 85.00 124.89 2.24 1231.04 1230.48 0.56 16Th: ;' * 515.74 431.75 0.65 1230.71 1230.71 �•"'` - •1675''-;"l,;_ 90.00 207.24 1.35 1231.60 1230.71 0.89 '.? 60.59 310.71 4.25 1237.78 1237.78 20.00 36.95 7.58 1237.78 1237.78 0.01 E•.:"+'-�'; 21oaa 59.00 256.51 2.51 1238.55 1238.55 = "t+p 2108iZsQ' `, 30.00 68.13 2.69 1239.15 1238.55 0.60 �✓'^. <:�.i c';�:'% ..h _. °k:;.:. 2120 > Culvert.`?r y`• 2132 66.16 497.94 1.37 1240.03 1240.03 2132':>,";aia 35.00 109.69 1.67 1240.69 1240.03 0.66 2150,' ;-X& 63.16 405.31 1.83 1240.03 1240.03 2150 -:: th 35.00 87.82 2.08 1240.69 1240.03 0.66 tni? d: 2900!:if'rt 206.16 107.48 1.70 1254.91 1254.91 r?'na,v;: 2900f'° a. 20.00 33.58 5.45 1254.81 1254,91 -0.10 :iiet�;�`:•.ta42956:2 i,.,• 102.68 78.39 2.62 1259.75 1259.75 t;', ,';:: 2956 --\ EX ' 16.00 26.79 6.83 1259.32 - 1259.75 -0.42 305:'iw:,Eyf Culvert E A 3054';l:.tai 210.00 452.72 0.43 1262.63 1262.63 '4Z:'_, 3054 t- �4 30.00 81.43 2.25 1262.52 1262.63 -0.10 • :4s 3075';z"4s 1' 9.88 21.64 8.46 1262.43 1262.43 '' J: oz 3075 9.88 21.64 8.46 1262.43 1262.43 0.00 3350'", 9.88 21.64 8.46 1271.43 1271.43 ,•'. 33$ 9.88 21.64 8.46 1271.43 1271.43 0.00 TOWN BRANCH TRIBUTARY 5 Fayetteville, Arkansas Flood Hazard Study Phase II HIP 2/2 . A.......�S....rt......a....... ........... HEC•RAS Plan: fw River, Town Branch Trib Reach: tbt6 Reach. River 56 ;',Top Wdlti Act" Aiea' 4VeI Totel.1 .4VElev°"5i >Base VJS i '� Prof,DeRa WS ft.&' -' H tht6 "': .000.I'4„1 28.61 52.02 7.88 1206.14 1206.14 tbt6<:' 000,-%'' 15.00 59.15 6.93 1207.04 1206.14 0.90 tots ..' 155 . • 28.61 52.02 7.88 1208.14 1208.14 155.': * 15.00 46.13 8.89 1208.17 1208.14 0.04 This: 685. 69.68 88.03 4.66 1214.78 1214.78 Y :^` ;'?a tots '.'r, 685 `: a;, 11.00 43.08 9.52 1215.65 1214.78 0.87 16tS( _ ...S 1056.5 %. w� 50.74 65.94 6.22 1219.52 1219.52 . 1056,'.';x,:'. 37.00 81.62 5.02 1220.19 1219.52 0.67 Se . 1095. .'^fit` 116.78 150.34 2.73 1220.25 1220.25 1616..-: . 1095'i-.:' E 37.00 102.46 4.00 1220.50 1220.25 0.25 , tbt6". °,'" 1131„•: ;.a 26.00 237.45 3.94 1220.28 1220.28 1bt6rf a'> 1131i:' "+i 25.00 122.55 3.73 1220.60 1220.28 0.32 'lY tots:..W . .'' 7158`.:;:t . Culvert tbt6'` `" ' 11871%%'.f 23.00 637.26 2.61 1224.14 1224.14 1bt6'< C 1187•" #-' 23.00 320.59 2.61 1224.14 1224.14 0.00 ,u..; tbt6'F.•`'`• 1196:. 246.93 729.96 0.56 1224.26 1224.26 We _ 1196,"�p>(L99M1 50.00 249.88 1.64 1224.21 1224.26 -0.06 A tots :<': 1206'svwS 118.16 449.93 0.91 1224.26 1224.26 tbt6 5'F'- 1206 r 33.00 207.81 1.97 1224.20 1224.26 -0.06 tilts :f„' -F 1216ScYY Culvert 1fl7XCi 132.25 407.56 1.01 1224.25 1224.25 lbt6•Ky..:..,CC_.: 122276 ? -.f 26.00 140.24 2.92 1224.24 1224.25 -0.01 ibt6 `f' -'l4` Z 176.70 405.01 1.01 1224.26 1224.25 `'�` 150 40.00 173.44 2.36 1224.34 1224.26 0.08 tbt6 o:.�;;a:-p ;h'i�; 134.92 12201 3.36 1227.23 1227.23 .1717 lbt6 .*,' i: 1717;`'Y'i 40.00 70.23 5.64 1227.34 1227.23 0.11 ibis 1746: -WW 210.01 403.90 1.02 1227.76 1227.76 tDt6 '• == - ._y_... 1746> 75.00 251.10 1.63 1228.35 1227.76 0.59 tbt6 1765N4i Culvert 1tit6"x' 1785 Q: 213.54 353.63 1.16 1228.26 1228.26 ibt6(•.:. 1785., 75.00 219.37 1.87 1228.55 1228.26 0.28 thte `,.4,? 1797. 223.13 151.58 2.70 1228.59 1228.59 tbf6`. xg; ri". 1797�n �_ 80.00 94.04 4.36 1228.87 1228.59 0.28 TOWN BRANCH TRIBUTARY 6 Fayetteville, Arkansas Flood Hazard Study Phase II lip 1/2 ci C W HEC-RAS Plan: fw River: Town Branch Trib Reach: tbt6 (Continued) Reach `'-.-RiverSta".A3iT pWdiAActs "iArea;''".dVel,Totet`n . W.S:'Elev' WS:-=�PicfDeftiWSci ... ,`Bane :. 5:+ - R =:: , ft'. tt .�� ftls 4.`> %?.,, ft %�«q" = ft s' .e'a..i ft-e�=SAM tbt6• ': 2244s. -; 354.86 211.73 1.94 1231.48 1231.46 tbt6 ' -- 2244, "' '. 50.00 91.47 4.48 1232.09 1231.46 0.64 tbt6 2273' 30.00 162.94 6.52 1231.60 1231.60 .✓ .' tbt6 '._:., 2273 '/ 33.00 86.25 4.75 1232.26 1231.60 0.66 tbt6 .. ••: `c 2294 ' Culvert (U16. m`,,. 2308 - -:7, 355.72 402.85 1.02 1233.37 1233.37 2308, -s 75.00 380.71 1.08 1236.33 1233.37 2.96 tbt6.-:;.2326 "-•_t 218.68 215.09 1.91 1233.39 1233.39 tht6 .2326 +,. 60.00 267.98 1.53 1236.33 1233.39 2.94 tbt6 r:' 2930 ,;; 340.90 179.10 2.29 1237.88 1237.88 tbt6 ra'i,S 2930.:' "" 40.00 68.16 6.01 1238.72 1237.88 0.84 tbt6 ` 3164•.-'- ' 361.42 188.72 2.17 1240.12 1240.12 tbt6` _ .. . 3164 :-: !'> 40.00 74.09 5.53 1241.17 1240.12 1.04 tbt6H';-;: ≤: --.3800 `.; ' 21.80 48.48 8.46 1252.71 1252.71 tbte :. 3800':;'"°. 2178 48.40 8.47 1252.71 1252.71 0.00 ,. Y't : Rid' tbt6':',' 4196- i'sa' 21.80 48.48 8.46 1259.71 1259.71 tbt6`". 41961.3'..9' 21.78 48.40 8.47 1259.71 1259.71 0.00 TOWN BRANCH TRIBUTARY 6 Fayetteville, Arkansas Flood Hazard Study Phase II liP 2/2 CATO SPRINGS CREEK Fayetteville, Arkansas Flood Hazard Study Phase II 12P P m C HEC•RAS Plan: fw River. E.F. Cato Reach: efc Reach - River Sta`' ::Top 1Ntlth Aot ` •Area' , Vef Total . :Ws ElevBase WS ';Prot Deka W S ,. it), *fk =' t>ft m, ...... k .r"•"- k'`;>m;o.. efc .• `, , 000 125.12 256.30 6.75 1219.97 1219.97 000 ^,:>.c 52.00 227.70 - 7.60 1220.97 1219.97 1.00 • efc - - -'- :: 83 ` ..St. �:` 134.34 302.67 5.72 1220.94 1220.94 etc- �:' <. 83 r-- :.::;2;; 52.00 226.71 7.63 1221.55 1220.94 0.62 efc , -.�� 777- .`-' 185.47 314.46 5,50 1225.93 1225.93 etc' '-: 55.00 219.86 7.87 1226.44 1225.93 0.51 efc =: 1625 185.84 358.09 4.68 1231.60 1231.60 efc - : 1625 - `" 55.00 242.37 6.91 1232.09 1231.60 0.49 efc . "- 302.Y 290.09 378.36 4.43 1242.44 1242.44 etc.; -'.` 3002 :-'-s?r 55.00 189.21 8.86 1242.54 1242.44 0.10 efc ..[. `='i.- 3063 ,:.> 288.10 723.93 2.32 1243.26 1243.26 efc :^:-'' " 3063:.i 100.00 491.52 3.41 1244.19 1243.26 0.93 etc 3o85:--4 Culvert etc H' - 3107 ' " - 547.41 1717.00 0.98 1244.47 1244.47 efc- --- 150.00 968.09 1.73 1244.94 1244.47 0.46 efc' �'.- 3150 302.28 531.77 3.15 1244.35 1244.35 etc :. - ; 342.00 708.96 2.36 1244.90 1244.35 0.55 ;� . « "'` ` 4239 :. 236.11 366.12 4.58 1249.59 1249.59 .efc.. _ .. '_ "'r 4239 S`'' 88.00 229.35 7.31 1249.97 1249.59 0.38 efc 47.00 469.09 7.18 1250.84 1250.84 efC - - 4433>'+3•e 47.00 317.39 5.73 1251.82 1250.84 0.99 s' etd-:ari'••:4482-c.. ;," Culvert efc 4792t3' 77.00 3382.83 1.56 1260.93 1260.93 .s`:: 47g2.1hti 64.00 958.24 1.80 1260.92 1260.93 -0.01 etc- `"'�- 4667'`4?� 511.84 3096.26 0.43 1260.98 1260.98 efc', :;. ". 4867;•,x; 200.00 1685.66 0.78 1260.98 1260.98 0.00 etc J a; ' 5650,: 1;z 665.00 1842.42 0.72 1261.00 1261.00 efc .: t - 5650 130.00 400.20 3.31 1260.91 1261.00 -0.09 etc . =" 5885 130.06 241.10 5.49 1262.81 1262.81 5885 -4{'% 100.00 217.02 6.10 1262.76 1262.81 -0.05 e`. etc" 6014.'i ` 500.95 1258.29 1.05 1264.01 1264.01 efc - -` , -'.' 6014%.' 140.00 618.04 2.14 1264.10 1264.01 0.09 5. ::,a...d.•a Kam.: .... i efc : - 6046:``) Culvert EAST FORK CATO SPRINGS CREEK Fayetteville, Arkansas Flood Hazard Study Phase II 13P 1/3 M F HEC-RAS Plan: fw River: E.F. Cato Reach: efc (Continued) • Reach. ° River Sla"V ':Top'Wdth Act`l N ; ;.:VeI TotiI!C AW:SEle"vM 'Base WS1 ?',P,rof pelts WS- .:£ I ..'., tt -:;iw Ns :ace t4$(ft)7a% ft eiEA .; .�, ':..'. etc ....'._ . 6072„. 541.07 1638.50 0.81 1265.54 1265.54 efc .� 6072` 125.00 706.05 1.87 1266.18 1265.54 0.65 A w_ •efc _ 6134"" 476.59 947.85 1.40 1265.53 1265.53 efc >: • 6134 100.00 .Area. 469.87 2.82 1266.18 1265.53 0.64 aaA:+' etc ` ='efl 6784S. 215.00 246.65 5.36 1270.00 1270.00 .; 60.00 164.84 8.03 1270.03 1270.00 0.03 tS efc:•-:-:-;;. 6851 216.76 216.76 289.00 4.58 1271.88 1271.88 efe • `-: 6851 `> t"zr- 75.00 181.64 7.28 1271.58 1271.88 -0.30 efc. " `.'- 6907; =s,;.' 252.82 558.73 2.37 1272.78 1272.78 efc. :.;.' r. 6907'';`..":z 75.00 327.16 4.04 1272.93 1272.78 0.15 efc LB' 6932`_ ; ` "%? Culvert µL_.e efc - a :',": •8958in, 388.56 805.44 1.64 1273.94 1273.94 aft .,, OA1 6958' ; 90.00 477.31 2.77 1274.73 1273.94 0.79 efc'-': 7019: _. 220.87 272.01 4.86 1273.69 1273.69 ]019 80.00 284.87 4.64 1274.66 1273.69 0.97 7144, 163.98 242.95 5.45 1274.82 1274.82 efcr'e„ 7T44 70.00 171.76 7.70 1274.71 1274.82 -0.12 erca 72421 42.97 135.05 9.82 1275.66 1275.66 7242,.. :. 42.00 140.47 9.42 1275.81 1275.66 0.15 ,etc: j�. g, et 7266= =` ?°� 29.00 270.28 .6.91 1277.08 1277.08 efc'- , 7266C4 29.00 205.41 6.98 1277.01 1277.08 -0.06 efc .;t - 7336.1-- _", Culvert / E __________________ etc -e:"' 7395.4% Fio4'.' 316.39 ____________ 609.46 ____________ 2.17 _____________ 1281.28 ____________ 1281.28 n96;/ ._________________ 70.00 440.34 3.00 1282.21 1281.28 0.93 efc'tt4kt 7455itf. 274.42 422.48 3.13 1281.30 1281.30 efc - iSS*4I. 90.00 392.92 3.37 1282.24 1281.30 0.93 tea. .,,._... e 6487.. 115.65 101.96 5.55 1297.28 1297.28 8487k... 93.73 98.19 5.76 1297.27 1297.28 -0.01 efc,' 86WI 61.08 80.75 7.01 1301.11 1301.11 erca 8660 28.19 65.52 8.64 1300.90 1301.11 -0.21 ete. 81.1;1~ 20.00 108.74 8.24 1301.62 1301.62 8741 20.00 114.66 7.94 1301.75 1301.62 0.13 etcu ..:;. 8731 Culvert EAST FORK CATO SPRINGS CREEK Fayetteville, Arkansas Flood Hazard Study Phase II 13P 2/3 HEC-RAS Plan: fw River: E.F. Cato Reach: efc (Continued) $ReechflYF21verSta,.t„±,To WtlthAct AreaA WelrTota°"W.S?Eiev';BaseWS ��ProtDeRaW5,�: ...yy wt,'p M R 3� $.]$ .,.. Y,xxqq��!t efa "i( //... -.`:t ftI4�I e. ♦dl-h..n.. Rqy_. eto a 8749t?flt 132.16 447.05 1.27 1306.64 1306.64 efe.'P, ':'"-t B74at4 65.00 364.37 1.55 1307.43 1306.64 0.79 etctFr 8823tZLIZ° 102.96 109.77 5.16 1306.62 1306.62 823t.. 45.00 110.72 5.11 1307.26 1306.62 0.64 e aSO&1tI 120.03 146.20 3.87 1308.00 1308.00 'efc. '...� 8906, - • 42.00 112.28 5.04 1308.00 1308.00 0.00 8913 Culvert 210.96 395.46 1.43 1309.63 1309.63 eiaU 8921 100.00 392.23 1.44 1310.61 1309.63 0.98 efc... 8990 44.15 76.43 7.41 1309.69 1309.69 ek 8'ftft'990: • 49.00 116.00 4.68 1310.51 1309.69 0.82 efc' ,q 9081fli 29.66 65.22 8.68 1312.27 1312.27 efc.ari,9081a°E".' 23.75 61.98 9.13 1312.23 1312.27 -0.04 EAST FORK CATO SPRINGS CREE8 Fayetteville, Arkansas Flood Hazard Study Phase II 13P 3/3 • HEC-RAS Plan: fw River: Cato Springs Tri Reach: CST Reach l'° River. Ste^ tTopWdth"Act ' ','Aria.<J VeIT6tal }wSyEJev aEtidef SProf f)eltaWS : P4:Lt R`a+,I';, ,_RUa:flls fly-°s:(t3 'j,... CSTa 000. 71.86 225.84 8.31 1253.15 1253.15 CS. . 000 58.00 278.00 6.75 1254.15 1253.15 1.00 q A CST :136 62.21 186.55 10.08 1253.76 1253.76 CST%t 58.00 184.92 10.15 1253.75 1253.76 -0.02 CSTs f? 55t:t ATQ 47.63 216.39 8.67 1259.01 1259.01 :CST551:''T ,I 47.75 217.54 8.63 1259.04 1259.01 0.02 CST '' 579,iov .° 66.69 183.67 10.22 1258.97 1258.97 CST ? a S.- 579C.y. 40.00 163.50 11.48 1258.79 1258.97 -0.18 CST t+:° 600' , -c ct 34.00 269.66 9.23 1259.79 1259.79 CST:''.'.:600'-'-°a>": 34.00 239.80 8.83 1260.06 1259.79 0.27 CST: 629;',*:^': Culvert CSLis4a1 668 ;.:. 270.21 1361.82 1.38 1263.67 1263.67 668Z; 77.00 692.42 2.71 1263.98 1263.67 0.32 CSi'^: 678'.' 227.10 752.55 2.49 1263.61 1263.61 CST'• 678 .r`. 65.00 413.13 4.54 1263.87 1263.61 0.27 CST : 1412 ` ±eY 90.24 216.72 8.66 1264.69 1264.69 t7 ' 1 i12> ` ' -'0.1 98.70 301.51 6.23 1265.58 1264.69 0.88 CAT0 SPRINGS TRIBUTARY Fayetteville, Arkansas Flood Hazard Study Phase II 14P E I A 6 HEC-RAS Plan: Plan 01 River. West Br Reach: WB Reach lveraSte d$T>' UVdti1'Adt.$ P a�Are`a"�'''^ _.i ;jVel Toter WS EIev"p;` 9sWs) ; Prof,Oexa WS" R XO3 ' '"s^ ft ; S4ft') fl "> aM :a, ft aw WB 93.43 110.63 4.72 1220.31 1220.31 WB 110.93 212.80 2.45 1221.31 1220.31 1.00 WB ;145 59.51 125.12 4.17 1221.47 1221.47 W"B 145 60.43 132.53 3.94 1221.59 1221.47 0.12 ff 6 862m 31.90 79.78 6.54 1224.61 1224.61 W6 6 - & 31.32 76.25 6.85 1224.50 1224.61 -0.11 VVB" :1008 56.69 122.12 4.27 1227.38 1227.38 N6�'a . 1008: ;"r.'=. 57.27 124.11 4.21 1227.41 1227.38 0.03 WEST BRANCH Fayetteville, Arkansas Flood Hazard Study Phase II 15P HEC-RAS Plan: fw River: Town Branch Trib Reach: TBT-7 'Reach:} RiverSta 9,U",Wdth"Acti,._,;,:Area.,':'`-VelTote1` .W.S.Elev-, :Base WSProfDehaWSN „%-':'_`*,"rtt°'.a:.4;rrd 1le-"'fl/s.t,ft « ,`..`,:;(O -•t T8T7`:'`Q :.° - 149.43 173.27 3.71 1231.30 1231.30 TBT-7 ti.w __ 23.00 92.50 6.94 1232.30 1231.30 1.00 r. e Tk TBT-T-...i tt 700 .. a 151.77 188.54 3.41 1232.79 1232.79 TBT4 iA iooWi& 24.60 82.35 7.80 1233.34 1232.79 0.55 TBT-T`1 z- 196 35.09 90.58 7.09 1233.82 1233.82 TBT-7-'. 196Y'fl 39.76 127.43 5.04 1234.76 1233.82 0.95 TBT-T'•- , ` 2162a 214.73 249.93 2.58 1234.64 1234.64 2167 41.00 141.71 4.60 1234.91 1234.64 0.26 260' Culvert 3021 153.32 498.48 1.46 1237.87 1237.87 TBT=T'x' 302 50.00 330.38 1.94 1238.83 1237.87 0.96 TBT-7.; r:::. 320g!J* 253.05 604.71 1.06 1237.92 1237.92 TBT-7x- i 3202t. 45.00 267.58 2.40 1238.82 1237.92 0.90 TBT-7: _i 600 'i-3,'-a 42.17 78.55 8.17 1238.00 1238.00 TBT-7:'. '.4' 600..(yr.' 68.89 128.80 4.98 1238.97 1238.00 0.98 •0.-. C�` V S TBT-7_.::,''" 900, F_`u`. 79.05 112.26 5.72 1242.25 1242.25 TBT-7.'."=' 900', d... <=i 27.35 81.27 7.90 1241.57 1242.25 -0.67 TBT-7 : ` <: 1180' '` ?' 46.95 80.52 7.97 1244.98 1244.98 TBT-7- 1180.` 21.68 86.30 7.44 1245.43 1244.98 0.45 TBT-7 1209 171.71 276.40 1.44 1246.36 1246.36 TBT-7 ^ a 1209. ', 4" 21.34 116.49 3.43 1246.43 1246.36 0.08 1230 ":,.;tea- Culvert TBT-7 1251 • 154.24 263.49 1.51 1246.36 1246.36 1BT=7 ...... 1251 y.; -r'. 26.00 134.81 2.96 1247.07 1246.36 0.71 TBT-7 ' , -'. 1260. ;.x:. A E 145.17 196.46 2.03 1246.34 1246.34 TBT-7 <,y-' 1260.fc.'23.88 127.89 3.12 1247.08 1246.34 0.74 iBT-7 i509; 47.62 71.70 5.56 1246.70 1246.70 TBT-7- . 5W ' - - 22.00 80.49 4.96 1247.51 1246.70 0.81 8T.7 4 e 1541k 27.11 68.88 5.83 1247.09 1247.09 TBT'-7$ TSZIe 29.91 88.46 4.58 1247.74 1247.09 0.65 :87'7_ =1570 Culvert TBT-7 "''T! 1599 208.49 185.13 2.16 1249.34 1249.34 TBT-T ° :i;, r 1599 • 73.00 190.37 2.14 1250.29 1249.34 0.94 TOWN BRANCH TRIBUTARY 7 Fayetteville, Arkansas Flood Hazard Study Phase II 16P 1/2 HEC-RAS Plan: fw River: Town Branch Trib Reach: TBT-7 (Continued) Y VRlver,Sfa� AE * ,�Tdp.WrRtt'Ae!-6o�„r�Arear;�u Y ♦. ' MVeIaT'otel� �",W.S ElBase -.♦ . WS.: .. ' Prof Delia WS:'� lit '; R 4 '...ff :.`n.T"ti R%s "v `fl'�:r:�, �.�4Sfi"r: :[. ,u :�S(ft)' -. . pa 173.69 96.43 4.14 1249.25 1249.25; I8o9Wl 42.37 114.96 3.47 1250.25 1249.25 1.00 Ths p **ffl.____________________ T `'I745a 46.27 83.03 4.81 ______ 1250.71 _____________ 1250.71 TBr7 1745.. 47.87 89.73 4.45 1250.85 1250.71 0.14 TOWN BRANCH TRIBUTARY 7 Fayetteville, Arkansas Flood Hazard Study Phase II 16P 2/2 FAYETTEVILLE, ARKANSAS Flood Hazard Study, Phase II ELEVATION REFERENCE MARKS Elevation RM (Ft-NGVD) Description Number 1929 Datum A 3 inch City of Fayetteville aluminum cap set in concrete, 72.3 feet from a wood post and 8.1 1 1268.44 feet from a large power pole and south of Huntsville Road. A 3 inch City of Fayetteville aluminum cap, 47, feet south of the northeast corner of a cemetery and 7.1 feet east of the fence line at 2 1236.48 the east side of cemetery, approximately 255 feet north. of Pump Station Road and 1,350 feet east of Town Branch Tributary 1. A Type -I monument set in the center of a concrete headwall over Town Branch Tributary 2, 3 1210.63 4 feet south of edge of pavement of 15 Street, 275 feet east of Morningside Drive. A Type -I concrete monument, 700 feet east of School Avenue, 1 foot east of the west end of a 4 1213.87 22 foot concrete headwall and 7 feet south of the back of a 5 foot sidewalk, approximately 95 feet east of Tin Cup Creek. A 3 inch City of Fayetteville aluminum cap set in a concrete post, northeast of the 5 1281, 29 intersectith on of College Avenue and 7 Street, southwest of the Jefferson Elementary School. A Type -I monument set 1 foot east of the west end of a 10 foot concrete headwall on a north 6 1325.32 south drain. The headwall is on the north side of Mountain Street and 300 feet east of Washington Street. 1 Elevation RM (Ft-NGVD) Description Number 1929 Datum A 3 inch City of Fayetteville aluminum cap set 7 1253.47 in concrete, 292 feet west of the edge of asphalt of Paris Avenue. A Type -I monument in the center of a 15 foot concrete slab, 6.5 feet north of edge of 8 1289.62 pavement, on north side of Center Street and 40 feet east of Graham Avenue. A National Geodetic Mark at the intersection of Cato Springs Road and the Arkansas & Missouri Railroad, 74 feet east of the near rail of the 9 1241.40 main track, 21 feet south of the center of Highway 265, 9 feet west of the center of a dirt road. A Type -I monument set in a 34 foot concrete headwall, on the south side of Shiloh Drive and 10 1247.37 800 feet east of Cato Springs Road, 1 foot east of the west end of the headwall over Cato Springs Branch. A 2 inch scribed square on the southeast corner of a 10 inch by 22 foot concrete headwall over 11 1262.05 Cato Springs Tributary, 21 feet east of the centerline of Cato Springs Road and 50 feet north of a paved private drive. A Type -I monument in the center of an 8 foot concrete headwall, on the south side of 15th 12 1231.22 Street over West Branch, 18 feet south of edge of pavement. A Type -III monument set flush with the natural ground, 200 feet south of Center Street, 8 feet 13 1285.11 south of a concrete headwall and 2 feet east of edge of pavement. A 4 inch aluminum Arkansas Highway and Transportation Department cap, 1 foot east of 14 1253.81 the west end of a 19 foot concrete headwall over East Fork Cato Springs Branch, on the north side of Highway 71. . 6 • Elevation RM (Ft-NGVD) Description Number 1929 Datum A Type -I monument set in the center of a 10 foot concrete headwall over East Fork Cato 1304.13 Springs Branch, on the south edge of the 15 pavement of Skelton Street, 20 feet east of a gravel drive to the north. 3 1 O ELEVATION IN FEET (N.G.V.D.) a J J a a --• -' -a -• N N co m i) (0 O O O Ln O 01 n in -. 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J J J J J _S N N N N N N N O J J N N W Ln O CD O In n In J -) N N .1. rl , .. p__ - _ __ - _ __ __ _ ____ --- - 000c ------ __.:II:i_I_:_ I:_ --- - II II II II ___-___-__ ____ ____ _____ __ _ _ __ _-OOOO �'Im,� - -- N VI VI U ---------- .-.. - -. ... O -------------.. --. .- -.... . ---- .--..-, -.. .. --11OO - -_- ---- -_ __- ---. ___________----- _ N 1 --__ N N -II II II II - --.-------.-----..---. --.5 -.---. - - - CDom0 _. ... ._ . ... .. .. 1 \` �OTm _- ----. _. ,.___ _ ._--- . .__._ .. _�.. --------- -------- -------- -- - - -- -- -- - - - ___-- -- 1 I I -. ------.- -- ..- - O 0 --I -01OO C7 O :00000 n cn m i(A n -<-<-<-< z 3 mmmm O . n n n n -..---------...-- ow------ z m w n m - - 0 mmmm - -- - --. . .. - -- -- - . .-. - z0000OOOO- ---.-- ----- --- - rrrr - FAYETTEVILLE. AR - FHS SEPTEMBER 1999 FLOOD PROFILES CUMMINGS CREEK ELEVATION IN FEET (N.G.V.D. N N N N J N N N J �(A (A .m Ui O N NO Cn 0 to O to 0 Ln C C U J N N v N .. 0000 1100 II II II II N) -A. a -4 mono m N m t D (D00C) mmmm V)V)fnN W FAYETTEVILLE, AR - FHS I CUMMINGS CREEK FLOOD PROFILES SEPTEMBER 1999 I ELEVATION IN FEET (N,G,V.D.) 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J J N N N) N 0 Ui FAYETTEVILLE, AR - FHS SEPTEMBER 1999 FLOOD PROFILES TOWN BRANCH TRIBUTARY 1 -J th J N 0 0 TO1100 m TO N 1 NWAU1 AU70m OD NA - 0 0 0 0 m-nmm N UI UI (n N NO 257 Cl 4 C ELEVATION IN FEET (N.G.V.D.) _s J J J J N N) N N) N N N N W (A 0 U1 O to n n J J NN V1^ y,^ 4 O V• O O - ---- - - -- - - - -. --- - -- -- -- - -- - - .- --. -. - -- - - -- . ---- --------. _.__ --------- ----.- ------- ------ ------------------ - -------------------- --- - -- - - -- --------- -- -------- - ---- _______..:__:::I:::::::::::::::::_---:::::_:::_::_:::::.:: ___ ________ ---- ------ -- --, --- --.- -- -- --- ------.--- - - - -- -. - -. - -- --- - ,.- - ---- -- -\. -------------- -- ----- . --. ----S -- ----- -- ------ - -,. 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AR - FHS SEPTEMBER 1999 FLOOD PROFILES TOWN BRANCH TRIBUTARY 6 -.01-s' OOOO O A o -< 1 � Z1 II N) II II b, II Q) ,w^ 11000 noon T m m m 11 N N N �s} ) O O O 100 II 1(4(401Idto II II U1 N -+ U1 OOO I m m m INNf/I I ELEVATION IN FEET (N.G.V.D.1 J J J J a J J _\ N N J N W W Ni U' NJ N) N N N 0 co 0 In O ui O ut -0 N 0 0- _ ____ ___ __ -.------.-- -'- ----- ----- -----.---- .._.-..__.__ _._. oo- --- ------- -- - --- --- -- --- -----. ----------------- ------- --------- --- N_ _ _ _ _ _ _ _ _ ------ p ------------...--- - p- - - ------ --- ---- -- - \ --- ------------- \,-- -- ----- ------- - - ---- - ----- ----------------- ----------------------- __--------------_____ - --- --- - ----,-- ---- ------------- --- --- --- ---------c -< I I l 00 CD3------------ -- -----. ------- -- -- -- _______ Tel. ----- 11 11 II 11 Jl ... . .......... _ . -t _.. _ __ -- __. _ __ __ f7 f7 f1 C7 -- - --- --- -------------------- ------\- -- ------------------------ -- - ---- N V) V) V) -- ---- - --------------------------- ---- ----- ------ -------------- ------ - --- -- -- -- - ---- -- -- ---- -------------- ------- -------- ----------------- -------D - - . ----.--- -----.---- - --- - - __ ... .. _._ _____ _____ ) ------I i_a::----II:::::Ii::::__:::::::::____:: T:::i:-::::.i-: :Ti:7I:T - ----- ---- - -- -- -- - --- -- - S - -- --- - - - - - _--;---1 1-- - 1- ==---======-----4-1- ----- ---------------- ----- ------ ---- --- ) -- - - -- --_-- --------- ---- ---------- ----- ----- _ _ --- -- --- _- _ --- --- ------------ I I -- -- - -- -- O O m -- 0000 _. _ -... _... 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