FLOOD10699

• County: Larimer
• Community: Larimer County and Incorporated Areas
• Title: FIS - Larimer County and Incorporated Areas - Vol 4
• Date: 12/19/2006
• Prepared For: Larimer County and Incorporated Areas
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

TABLE OF CONTENTS

Volume 1

Page

1 .0 INTR 0 D U CTI 0 N ............. . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . .. .. .. . . . . . . . .. . . . . . . . . . . . . . . .. . .. . . . . . .. . . . . . .. .. . . .. . . . .. . . . .. . .. 1

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

1.2 Authority and Acknowledgments .................................................................................. 1

1 .3 Coord in a ti on .................................................................................................................. 5

2.0 AREA STUDIED............................................................................................................... 8

2.1 Scope of Study............................................................................................................... 8

2.2 Comm u ni ty De scri pti on .... ... ... ... .. ... ..... ............ ................................................ .............. 9

2.3 Pri nci pal Fl ood Pro b 1 ems.. ... .. ...... . .......... .............. ...................... .... .............. ............... 14

2.4 Fl 00 d Pro t e c ti 0 n Mea sure s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1 7

3.0 EN G IN'EERIN G METHOD S ......... ... .. ...... .......... ............................... .. ... . ... ........ ....... ...... 19

3.1 Hydro 1 0 gi c An a1 y ses . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 19

3 .2 H Y dr au 1 i c Anal y s e s ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 21

3.3 V erti c a1 Datum............................................................................................................. 34

4.0 FLOOD PLAIN MANAGEMENT APPLICATIONS .....................................................40

4.1 FI 00 d B 0 u n d ari e s ......................................................................................................... 40

4.2 Fl ood ways... ..... ... .... ......... ... .. .... ... ..... .... ... ..... .. .......... ... .. ...... ........................... ............. 42

5.0 IN S URAN CE APPLI CA TI ON S .. ....... .. ........................ ... ........ ......... ....... ... ........ ........... 132
6.0 FLOOD INSURANCE RATE MAP.............................................................................. 133

7 .0 OTHER STUDIES ......................................................................................................... 135

8. 0 LOCATION ,OF DATA ................................................................................................. 139

9.0 BIBLIOGRAPHY AND REFERENCES....................................................................... 139