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I I I I I I I I I I I I I I I I I I I III VII TABLE OF CONTENTS LIST OF TABLES Page Page SUMMARY 1 Table 1 Design Rain Storms on Dry Gulch and 6 Tributaries in Denver and Lakewood, Colorado I INTRODUCTION Authorization Purpose and Scope Acknowledgments Table 3 Tabular Flood Plain and Floodway Data 20 - 26 Table 2 Tabulation of Basin Hydrologic Parameters 8 and Peak Discharges 2 2 2 II GENERAL BASIN DESCRIPTION 3 ADDITIONAL STUDIES AND PERTINENT DATA LIST OF FIGURES 4 IV FLOOD HISTORY Figure 1 Comparative 100-year Hydrographs Computed 9 along Dry Gulch Figure 2 Hydrographs at Confluence of Dry Gulch and 9 North Dry Gulch (Harlan Street) 5 V HYDROLOGIC ANALYSIS 5 VI HYDRAULIC ANALYSIS 13 DESCRIPTION AND DELINEATION OF THE 100-YEAR FLOOD HAZARD The 100-Year Flood 13 Figure 3 Projected Peak Discharges on Main Dry Gulch 10 Channel 13 Figure 4 Projected Peak Discharges on North Dry Gulch 11 and Colfax Gulch Dry Gulch from Lakewood Gulch to Harlan Street Dry Gulch from Harlan Street to Zephyr Street Dry Gulch from Zephyr Street to Carr Street Dry Gulch from Carr Street to Garrison Street Dry Gulch from Garrison Street to Miller Street Dry Gulch from Miller Street to Simms Street 14 l5 l5 15 l6 16 North Dry Gulch from Harlan Street to pierce Street l8 North Dry Gulch from pierce Street to Dover Street 18 Colfax Gulch from Pierce Street to Balsam Street 19 Figure 5 Photographs of Dry Gulch 27 Figure 6 Photographs of Dry Gulch 28 FHAD Sheet 1 of 20 - Index Map of Plan and Profile Sheets FHAD Sheet 2 of 20 - Drainage Basin Descriptions FHAD Sheet 3 of 20 - Flood Hazard Area Delineation through sheet 20 of 20 for Dry Gulch Flood Hazard Area Delineation Sheets Sheet 1 of 20 through 20 of 20 29 REFERENCES