FLOOD11039

• County: Grand
• Community: Grand County and Incorporated Areas
• Basin: Colorado Mainstem
• Title: FIS - Grand County and Incorporated Areas
• Date: 1/2/2008
• Prepared For: Grand County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

TABLE OF CONTENTS

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1.0 INTRODUCTION............................................... ........ ..................... .............. .............. ..... ............. I

1.1 Purpose of Study..... ................................................. .................... ................... ...... .............. I
1.2 Authority and Acknowledgments ....................................................................................... I

1.3 Coordination.... ................ ................ ..... ....................................... ............... ..... .......... .... ..... 2

2.0 AREA STUDIED ...... .... ............................................ .............. ..................... .......... ..... .... ............... 2

2.1 Scope of Study.............................................. .............. ........................................................ 2
2.2 Community Description........ ....................................... ..................................... ............. ..... 4
2.3 Principal Flood Problems..... ......................... ............................ ..................... ..................... 5
2.4 Flood Protection Measures ... ................. ............................. ................................ ................ 5

3.0 ENGINEERING METHODS......... ......................................................... ......... ......... ..... ......... ..... 6

3.1 Hydrologic Analyses.. ............... ......... ............... ...................................... ........... ................. 6

3.2 Hydraulic Analyses ......................................................................... ............... ........ ............. 8

3 .3 Vertical Datum............ ...... ........................................................................... ....... .............. II

4.0 FLOODPLAIN MANAGEMENT APPLICATIONS............................................................... 11

4.1 Floodplain Boundaries.... ....... ............. ....... ............... .......... ........... ........ ....... .............. ...... 12

4.2 Floodways........ ........ ....... ......... ....... ........ ............... .............. ....... ... ........ .,. ............ ...... ...... 12

5.0 INSURANCE APPLICATION.. ........ ............................................. ..... ................................ ....... 25

6.0 FLOOD INSURANCE RATE MAP........................................................................................... 25

7.0 OTHER STUDIES................... ................ ................................................... ............... ..... ............. 25

8.0 LOCATION OF DATA ...............................................................................................................27

9.0 BIBLIOGRAPHY AND REFERENCES...................................................................................27