FLOOD07780

• County: Eagle
• Community: Eagle County
• Basin: Colorado Mainstem
• Title: Hydrology Addendum FIS - Eagle County Unicorporated Areas
• Date: 2/1/2002
• Prepared For: CWCB
• Prepared By: Montgomery Watson Harza
• Floodplain - Doc Type: Floodplain Report/Masterplan

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TABLE OF CONTENTS

PREFACE .......................................................................................................................................2

TABLE OF CONTENTS ................................................................................................................3

INTRODUCTION ...........................................................................................................................4

Purpose and Scope ..............................................................................................................4

Authorizati on....................................................................................................................... 4

STUDY AREA DESCRIPTION .....................................................................................................5

Community Description .. ...... ........ ..... ..... ......... ......... ........... ......... ...................................... 5

Watershed Description ....... ........... ... ..... .............. .......... ................ ...................................... 5
Flooding Problems and Flooding History ........................................................................... 6

Previous Studies.................................................................................................................. 6
Community Response to the CWCB Designation and Approval Process .......................... 6

Hydrologic Analysis.. ...... ...... ... ................ ...... ... ...... .... .............. ...... ................................ .... 7

Hydraulic Analysis. .......... ..... ............... ....................... ........ .......... ........ ....................... ....... 9

Floodplain Mapping .. ... ......... ...... .., .......... ......................... ......... ... ........ .................... .......... 9

FLOODPLAIN MANAGEMENT ................................................................................................ 10
Local Ordinance Requirements ......................................................................................... 10

Flood Insurance................................................................................................................. 10
Floodplain Management Alternatives ......................... .................. ............................ ........ 10

APPENDIX ................................................................................................................................... 12

Designation Request Letter
Figure 1. Study Area Location Map
Figure 2. Eagle County
FIRM Index Map Cover
CWCB Floodplain Information Warehouse printout for Eagle County
Eagle County PIS - Streams in Study
PIS Detailed Floodplain Discharges
CWCB Hydrology Worksheets
USGS Gage Station Peak Flow Analysis

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