VOLUME 2 OF 5 HILLSBOROUGH COUNTY, FLORIDA AND INCORPORATED AREAS Hillsborough County COMMUNITY NAME COMMUNITY NUMBER HILLSBOROUGH COUNTY (UNINCORPORATED AREAS) 120112 PLANT CITY, CITY OF 120113 TAMPA, CITY OF 120114 TEMPLE TERRACE, CITY OF 120115 PRELIMINARY Federal Emergency Management Agency FLOOD INSURANCE STUDY NUMBER 12057CV002B
NOTICE TO FLOOD INSURANCE STUDY USERS Communities participating in the National Flood Insurance Program have established repositories of flood hazard data for floodplain management and flood insurance purposes. This Flood Insurance Study (FIS) may not contain all data available within the repository. It is advisable to contact the community repository for any additional data. Part or all of this FIS may be revised and republished at any time. In addition, part of this FIS may be revised by the Letter of Map Revision process, which does not involve republication or redistribution of the FIS. It is, therefore, the responsibility of the user to consult with community officials and to check the community repository to obtain the most current FIS components. Initial Countywide FIS Effective Date: August 28, 2008 Revised Countywide FIS Date: xxxxxxx
TABLE OF CONTENTS Volume 1 Page 1.0 INTRODUCTION 1 1.1 Purpose of Study 1 1.2 Authority and Acknowledgments 1 1.3 Coordination 4 2.0 AREA STUDIED 4 2.1 Scope of Study 4 2.2 Community Description 7 2.3 Principal Flood Problems 9 2.4 Flood Protection Measures 10 3.0 ENGINEERING METHODS 11 3.1 Hydrologic Analyses 12 3.2 Hydraulic Analyses 32 3.3 Vertical Datum 41 4.0 FLOODPLAIN MANAGEMENT APPLICATIONS 42 4.1 Floodplain Boundaries 42 4.2 Floodways 43 5.0 INSURANCE APPLICATIONS 44 6.0 FLOOD INSURANCE RATE MAP 46 7.0 OTHER STUDIES 46 8.0 LOCATION OF DATA 46 9.0 BIBLIOGRAPHY AND REFERENCES 48 10.0 REVISION DESCRIPTIONS 56 10.1 First Revision 56 i
TABLE OF CONTENTS Volume 1 - continued Page FIGURES Figure 1 Transect Location Map 38 Figure 2 Transect Schematic 39 Figure 3 - Floodway Schematic 44 TABLES Table 1 Study Analysts 3 Table 2 Pre-Countywide CCO Meetings 4 Table 3 Flooding Sources Studied by Detailed Methods 5 Table 4 - Scope of Revision 6-7 Table 5 Summary of Discharges 15-30 Table 6 Parameter Values for Surge Elevations 31 Table 7 Summary of Coastal Stillwater Elevations 32 Table 8 Coastal Data 33 Table 9 Manning's "n" Values 40-41 Table 11 Community Map History 47 TABLE OF CONTENTS Volume 2 Table 10 Floodway Data 1-153 ii
TABLE OF CONTENTS Volume 3 EXHIBITS Exhibit 1 - Flood Profiles Alafia River Watershed Alafia River Buckhorn Creek North Prong Alafia River Rice Creek South Prong Alafia River Tributary Canal Brooker Creek Watershed Brooker Creek Bullfrog/Wolf Branch Creek Watershed Big Bend Bullfrog Creek Bullfrog Creek Tributary 1 Bullfrog Creek Tributary 2 Bullfrog Creek Tributary 3 Little Bullfrog Creek North Prong Bullfrog Creek Tadpole Creek Tucker Rhodine Curiosity Creek Watershed Curiosity Creek (near City of Tampa) Cypress Creek Watershed Cypress Creek (near City of Tampa) Mill Lake Tributary Delaney Creek Watershed Archie Creek Delaney Creek Delaney Creek Lateral C Delaney Creek Lateral D Delaney Creek Lateral E Delaney Creek Tributary 1 Delaney Creek Tributary 2 North Archie Creek Eastlake Watershed Six Mile Creek Hillsborough River Watershed Bassett Branch Blackwater Creek Clay Gulley East Clay Gulley East Tributary 2 Clay Gulley East Tributary 4 Clay Gulley East Tributary 5 Clay Gulley East Tributary 6 Panel 01P-02P Panel 03P Panels 04P-05P Panel 06P Panels 07P-09P Panel 10P Panel 11P-12P Panel 13P Panels 14P-17P Panel 18P Panel 19P Panels 20P-21P Panels 22P-24P Panel 25P Panel 26P Panel 27P Panels 28P-30P Panels 31P-33P Panels 34P Panels 35P-36P Panels 37P-40P Panel 41P Panel 42P Panel 43P Panel 44P Panel 45P Panels 46P-48P Panels 49P-50P Panel 51P Panels 52P-54P Panels 55P-57P Panel 58P Panel 59P Panel 60P Panel 61P iii
Clay Gulley East Tributary 7 Clay Gulley East Tributary 8 Clay Gulley West Cow House Creek East Canal East Canal Tributary East Canal (Upstream of Frontage Road) Hillsborough River Panel 62P Panel 63P Panels 64P-66P Panels 67P-69P Panels 70P-71P Panels 72P Panels 73P-74P Panels 75P-82P TABLE OF CONTENTS Volume 4 EXHIBITS - continued Exhibit 1 - Flood Profiles - continued Hillsborough River Watershed - continued Hollomans Branch Hollomans Branch Tributary 1 Hollomans Branch Tributary 2 Hollomans Branch Tributary 3 Itchepackesassa Creek Itchepackesassa Creek Tributary 1 Itchepackesassa Creek Tributary 2 New River New River East Tiger Creek Trout Creek Two Hole Branch Two Hole Branch Tributary 1 Little Manatee River Watershed Alderman Creek Carlton Branch Carlton Branch Tributary 1 Carlton Branch Tributary 2 Carlton Branch Tributary 3 Carlton Branch Tributary 3.1 Curiosity Creek Curiosity Creek Tributary 1 Curiosity Creek Tributary 1.1 Cypress Creek Dug Creek Dug Creek Tributary 1 Dug Creek Tributary 2 Dug Creek Tributary 3 Gulley Branch Howard Prairie Branch Howard Prairie Branch Tributary 1 Panels 83P-86P Panel 87P Panels 88P-89P Panels 90P-91P Panels 92P-93P Panel 94P Panel 95P Panels 96P-97P Panel 98P Panels 99P-100P Panels 101P-103P Panels 104P-107P Panels 108P-110P Panels 111P-112P Panels 113P-115P Panel 116P Panels 117P-118P Panel 119P Panel 120P Panel 121P Panel 122P Panel 123P Panels 124P-126P Panels 127P-128P Panel 129P Panel 130P Panel 131P Panels 132P-134P Panels 135P-137P Panel 138P iv
TABLE OF CONTENTS Volume 4 - continued EXHIBITS - continued Exhibit 1 - Flood Profiles - continued Little Manatee River Watershed - continued Howard Prairie Branch Tributary 2 Little Manatee River Little Manatee River Tributary 1 Little Manatee River Tributary 2 Little Manatee River Tributary 2.1 Little Manatee River Tributary 2.2 Little Manatee River Tributary 3 Little Manatee River Tributary 4 Little Manatee River Tributary 5 Little Manatee River Tributary 5.1 Little Manatee River Tributary 6 Little Manatee River Tributary 7 Little Manatee River Tributary 7.1 Little Manatee River Tributary 8 Little Manatee River Tributary 9 Little Manatee River Tributary 10 Little Manatee River Tributary 11 Little Manatee River Tributary 12 Little Manatee River Tributary 13 Panel 139P Panels 140P-147P Panel 148P Panel 149P Panel 150P Panel 151P Panel 152P Panel 153P Panels 154P-155P Panel 156P Panel 157P Panels 158P-159P Panel 160P Panel 161P Panel 162P Panels 163P-164P Panel 165P Panel 166P Panels 167P-168P TABLE OF CONTENTS Volume 5 EXHIBITS - continued Exhibit 1 - Flood Profiles - continued Little Manatee River Watershed - continued North Lake Tributary Pierce Branch Pierce Branch Tributary 1 Pierce Branch Tributary 2 Pierce Branch Tributary 3 Ruskin Inlet/Marsh Branch South Fork Little Manatee River Wildcat Creek Lower Sweetwater Creek Watershed Lower Sweetwater Creek Tributary 1 Pemberton Creek/Baker Canal Watershed Baker Canal Baker Canal Tributary 1 Baker Canal Tributary 2 Baker Canal Tributary 3 Panel 169P Panels 170P-172P Panel 173P Panel 174P Panel 175P Panels 176P-178P Panel 179P Panels 180P-181P Panels 182P-183P Panels 184P-187P Panel 188P Panel 189P Panel 190P v
TABLE OF CONTENTS Volume 5 - continued EXHIBITS continued Exhibit 1 - Flood Profiles - continued Pemberton Creek/Baker Canal Watershed - continued Baker Canal Tributary 5 Baker Canal Tributary 6 Baker Canal Tributary 7 Baker Canal Tributary 8 Baker Creek/Pemberton Creek/Mill Creek Baker Creek Tributary 1 Baker Creek Tributary 2 Campbell Branch Campbell Branch Tributary 1 Flint Creek Lake Thonotosassa Tributary Mill Creek Tributary 1 Mill Creek Tributary 2 Pemberton Creek Tributary 1 Spartman Branch Rocky/Brushy Creek Watershed Brushy Creek Brushy Creek Branch 2 Brushy Creek Tributary 1 Half Moon Lake Branch Rocky Creek Rocky Creek Tributary 1 Sweetwater Creek Watershed Sweetwater Creek Sweetwater Creek Channel H Tampa Bypass Canal Watershed Tampa Bypass Canal Tampa Bypass Canal Main Ditch Tampa Bypass Canal Tributary 1 Tampa Bypass Canal Tributary 1 South Branch Tampa Bypass Canal Tributary 2 Panel 191P Panel 192P Panel 193P Panel 194P Panels 195P-199P Panel 200P Panel 201P Panels 202P-207P Panel 208P Panel 209P Panel 210P Panel 211P Panel 212P Panel 213P Panels 214P-216P Panels 217P-219P Panels 220P-221P Panel 222P Panels 223P-224P Panels 225P-229P Panels 230P-233P Panels 234P-236P Panels 237P-238P Panels 239P-242P Panel 243P Panels 244P-245P Panel 246P Panel 247P Exhibit 2 - Flood Insurance Rate Map Index Flood Insurance Rate Map vi
FLOODING SOURCE JUNCTION NUMBER CONDUIT NUMBER FLOODWAY DISTANCE 1 WIDTH PEAK FLOW VELOCITY REGULATORY BASE FLOOD WATER-SURFACE ELEVATION (FEET NAVD 88) WITHOUT FLOODWAY WITH FLOODWAY Delaney Creek 210170 19,702 17.4 17.4 17.5 0.1 9210180 135 1,520 3.3 210180 21,012 17.7 17.7 17.8 0.1 1210190 235 489 7.0 210190 21,103 18.4 18.4 18.7 0.3 9210200 145 1,450 2.9 210200 21,811 18.6 18.6 19.0 0.4 9210205 114 1,080 3.0 210205 22,690 18.7 18.7 19.1 0.4 9210210 80 1,030 3.4 210210 23,419 20.7 20.7 20.8 0.1 9210220 100 869 2.5 210220 24,129 20.9 20.9 21.0 0.1 9210230 140 869 4.4 210230 24,200 20.9 20.9 21.0 0.1 9210235 70 758 2.2 210235 25,711 21.5 21.5 21.5 0.0 9210240 175 560 2.3 210240 26,522 21.5 21.5 21.6 0.1 9210250 150 527 2.1 210250 28,615 22.9 22.9 23.0 0.1 1210260 150 172 1.6 210260 28,777 23.0 23.0 23.0 0.0 9210270 200 90 1.0 210270 29,807 23.7 23.7 23.7 0.0 9210280 210 335 1.5 210280 31,948 25.6 25.6 25.6 0.0 9210290 140 335 1.6 210290 33,500 26.3 26.3 26.3 0.0 9210291 135 276 1.0 210291 33,996 26.9 26.9 26.9 0.0 1210292 150 100 1.1 210292 34,136 26.9 26.9 26.9 0.0 9210300 100 159 1.4 210300 35,102 27.0 27.0 27.0 0.0 9210310 55 225 1.4 INCREASE 1 Feet above Limit of Detailed Study (located at a point approximately 1.5 miles downstream of Railroad) TABLE 10 FEDERAL EMERGENCY MANAGEMENT AGENCY HILLSBOROUGH COUNTY, FL AND INCORPORATED AREAS FLOODWAY DATA DELANEY CREEK
FLOODING SOURCE JUNCTION NUMBER CONDUIT NUMBER FLOODWAY DISTANCE 1 WIDTH PEAK FLOW VELOCITY REGULATORY BASE FLOOD WATER-SURFACE ELEVATION (FEET NAVD 88) WITHOUT FLOODWAY WITH FLOODWAY Delaney Creek 210310 36,622 27.0 27.0 27.0 0.0 1210330 60 142 1.7 210330 37,033 27.3 27.3 27.3 0.0 9210334 40 324 1.9 210334 37,796 28.1 28.1 28.1 0.0 1210340 50 147 5.2 210340 37,842 29.2 29.2 29.2 0.0 9210341 150 257 0.3 210341 38,382 29.2 29.2 29.2 0.0 9210342 45 258 0.8 210342 39,522 29.3 29.3 29.3 0.0 1210350 45 130 3.8 210350 39,622 29.6 29.6 29.6 0.0 9210351 175 254 0.5 210351 39,972 29.6 29.6 29.6 0.0 9210352 35 255 0.3 210352 40,722 29.6 29.6 29.6 0.0 1210360 35 142 4.8 210360 40,822 29.9 29.9 29.9 0.0 9210361 110 260 0.5 210361 41,882 29.9 29.9 29.9 0.0 1220000 150 321 8.8 220000 42,032 30.4 30.4 30.4 0.0 9220001 502 367 0.4 220001 42,534 30.4 30.4 30.4 0.0 9220010 1,035 191 1.7 220010 43,569 30.5 30.5 30.5 0.0 1220020 530 467 2.3 220020 44,099 30.6 30.6 30.6 0.0 9220030 1,012 140 0.7 220030 45,111 30.6 30.6 30.6 0.0 1220040 163 118 2.1 220040 45,274 30.7 30.7 30.7 0.0 9220050 1,519 260 1.1 220050 46,793 30.8 30.8 30.8 0.0 INCREASE 1 Feet above Limit of Detailed Study (located at a point approximately 1.5 miles downstream of Railroad) TABLE 10 FEDERAL EMERGENCY MANAGEMENT AGENCY HILLSBOROUGH COUNTY, FL AND INCORPORATED AREAS FLOODWAY DATA DELANEY CREEK
FLOODING SOURCE JUNCTION NUMBER CONDUIT NUMBER FLOODWAY DISTANCE 1 WIDTH PEAK FLOW VELOCITY REGULATORY BASE FLOOD WATER SURFACE ELEVATION (FEET NAVD 88) WITHOUT FLOODWAY WITH FLOODWAY Delaney Creek Lateral C 210200 0 18.6 18.6 18.7 0.1 9213000 45 355 2.3 213000 1,956 20.3 20.3 20.4 0.1 1213010 50 89 8.4 213010 2,003 20.5 20.5 20.5 0.0 9213020 45 295 3.7 213020 2,962 21.6 21.6 21.6 0.0 1213040 45 41 4.6 213040 3,007 21.6 21.6 21.6 0.0 9213050 35 206 1.5 213050 4,463 22.2 22.2 22.2 0.0 7213060 20 167 0.0 213060 4,509 22.2 22.2 22.2 0.0 INCREASE 1 Feet above confluence with Delaney Creek TABLE 10 FEDERAL EMERGENCY MANAGEMENT AGENCY HILLSBOROUGH COUNTY, FL AND INCORPORATED AREAS FLOODWAY DATA DELANEY CREEK LATERAL C
FLOODING SOURCE JUNCTION NUMBER CONDUIT NUMBER FLOODWAY DISTANCE 1 WIDTH PEAK FLOW VELOCITY REGULATORY BASE FLOOD WATER SURFACE ELEVATION (FEET NAVD 88) WITHOUT FLOODWAY WITH FLOODWAY Delaney Creek Lateral E 210280 0 25.6 25.6 25.5 0.0 1215000 60 419 2.6 215000 125 25.6 25.6 25.5 0.0 9215005 40 145 1.9 215005 1,307 25.6 25.6 25.6 0.0 1215010 50 130 3.9 215010 1,342 25.6 25.6 25.6 0.0 9215020 30 104 3.2 215020 1,846 25.8 25.8 25.8 0.0 INCREASE 1 Feet above confluence with Delaney Creek TABLE 10 FEDERAL EMERGENCY MANAGEMENT AGENCY HILLSBOROUGH COUNTY, FL AND INCORPORATED AREAS FLOODWAY DATA DELANEY CREEK LATERAL E