Floodplain Information Report Volume 3 Gunnison River from Delta to the Confluence with the Colorado River

• Basin: Gunnison
• Basin: Colorado Mainstem
• Title: Floodplain Information Report Volume 3 Gunnison River from Delta to the Confluence with the Colorado River
• Date: 3/1/1995
• Prepared For: The Recovery Implementaiton Program for Endangered Fish Species in the Upper Colorado River Basin
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

TABLE OF CONTENTS
Preface
1.0 INTRODUCTION ............. ............................... 1
1.1 Purpose ................ ............................... 1
1.2 Acknowledgements ........ ............................... 1
1.3 Related Flood Studies ...... ............................... 1
2.0 STUDY AREA ............... ............................... 2
2.1 Location ............... ............................... 2
2.2 Study Reach ............ ............................... 2
2.3 Basin Characteristics ....... ............................... 4
2.4 Summary of Drainage Areas . ............................... 4
2.5 Flood Characteristics ....... ............................... 6
3.0 HYDROLOGIC ANALYSIS ...... ...............................
9
3.1
Existing Data ............ ...............................
9
3.2
New Hydrologic Information ................................
9
3.3
Hydrologic Findings ....... ...............................
9
4.0 HYDRAULIC ANALYSIS ...... ...............................
12
4.1
Base Mapping .......... ...............................
12
4.2
Stream Reaches ......... ...............................
12
4.3
Field Surveys and Cross - Section Preparation ....................
15
4.4
Computing Flood Depths ... ...............................
16
4.5
Delineating Flood Boundaries ...............................
17
5.0 INTERPRETATION OF THIS REPORT ............................
20
5.1
Hydrologic Findings ...... ...............................
20
5.2
Hydraulic Findings ....... ...............................
20
5.3
Floodplain Delineations .... ...............................
20
6.0 REFERENCES .............. ............................... 21
LIST OF TABLES
TABLE
PAGE
1 Stream Gage Data
2
2 Drainage Area Summary
6
3 Flow Summary
10
4 Reach Classification
13
5 Cross - section Summary
16
6 Depth of Flooding Summary
18
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1
1