FLOOD10478

• Designation Number: 594
• County: Jefferson
• Community: Jefferson County and Incorporated Areas
• Title: FIS - Jefferson County and Incorporated Areas - Vol 5
• Date: 6/17/2003
• Prepared For: Jefferson County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

TABLE OF CONTENTS

Paee

1.0 INTR 0 Due TI 0 N ......................................................................................................................... 1

1.1 Purpose of Study........................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1

1.2 Au th ori ty and A c 1m 0 wI ed gmen ts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1

1.3 Coordination. ......... . .... '............ . ..... ....... .. . . ... .'.. . .... .. ....... ... .. . .. ... ..... ... ...... .. . .. ............ .. ... ...... 3

2.0 AREA STUDIED....................................................................................................................... .... 5

2.1 S cope of Study......................................................... . . . . . . . . . . . . . . .. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5

2.2 Community Description ................. ........... .... .......... ..... ........ .......................'.' .... ................. 9

2.3 Principal Flood Problems.................................................................................................. 13

2. 4 Flood Protec ti 0 n Measure s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 21

3.0 EN G IN"EERIN' G METHODS ...................................................................................................... 24

3.1 Hydrologic Analyses.... ....... ........ ....... ............ ............ ...................................... .......... '...... 24

3.2 Hydraulic Analyses... ..... .... ... .... .......... ... .... ..... ........ .............. ...... ........... .......... ....... ... ........ 30

4.0 FLOODPLAIN MANAGEMENT APPLICA TIONS............................................................... 49

4.1 Floodplain Boundaries...................................................................................................... 49

4.2 PI ood way s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 50

5.0 INSURANCE APPLICATION.................................................................................................... 51

6.0 FLOOD INSURANCE RATE MAP ...........................................................................' .......... .... 75

7 .0 0 THE R STUDIES......................................................................................................................... 77

8.0 LOCATION 0 F DATA............................................................................................................... 78

9.0 BffiLIOGRAPHY AND REFERENCES ........................... ...................................... ................. 78