FLOOD03462

• County: Statewide
• Community: State of Colorado
• Basin: Statewide
• Title: Procedure for Approximate Dam Failure Floodplain Mapping
• Date: 1/1/1988
• Prepared For: Association of State Dam Safety Officials
• Prepared By: John W. Van Sciver
• Floodplain - Doc Type: Educational/Technical/Reference Information

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CONTENTS

PREFACE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

INTRODUCTION TO GENERAL PROCEDURE. . . . . . . . . . . . . . . . . . . . . . .1

COMPUTATION OF PEAK DISCHARGE DUE TO FAILURE OF THE DAM (Qp) . . . . . . . . .2

COMPUTATION .OF PEAK FLOWS (Qri) AND FLOW DEPTHS (Di) AT TYPICAL SECTIONS

DOWNSTREAM OF THE DAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

DRAWING THE FLOODPLAIN INUNDATION MAP. . . . . . . . . . . . . . . . . . . . 17

SUMMARY AND CONCLUSIONS.

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REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

APPENDIX 1 ... WORKSHEETS W-l AND W-2. . . . . . . . . . . . . . . . . . . .A-l

APPENDIX 2 ... TABLE OF ROUTING CONSTANTS ci . . . . . . . . . . . . . . . .A-3

APPENDIX 3 ... BASIC PROGRAM LISTING OF HAZARD2. . . . . . . . . . . . . . .A-4

APPENDIX 4 ... SAMPLE HAZARD2 OUTPUT; LOG LAKE DAM . . . . . . . . . . . . A-11

APPENDIX 5 ... SAMPLE COMPLETED FLOODPLAIN MAPS. . . . . . . . . . . . . . A-13

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