FLOOD07758 - Laserfiche WebLink

Home Browse Search

I I I I I I I I I I I I I I I I I I I I. II. III. IV. V. VI. VII. VIII. THE LAKEWOOD GULCH MASTER PLAN General Comments 25 Basis of Design 26 Major Drainageway Planning Sheets with Description of Proposed Improvements TABLE OF CONTENTS SUt-!\HARY The Study Area Hydrologic and Hydraulic Analyses Development of Alternative Plans Benefit Cost Analysis The Master Plan GENERAL BASIN DESCRIPTION HYDROLOGIC ANALYSIS Introduction General Floods Procedure Precipitation Runoff Hydrographs HYDRAULIC ANALYSIS DESCRIPTION OF THE ALTERNATE PLANS FOR DEVELOPMENT General 18 Recommendations from the Phase A Report 18 BENEFIT-COST ANALYSIS Determination of Flood Damages Determination of Benefits Evaluation of Costs Comparison of Costs and Benefits APPENDICES Appendix A Legal Opinion Appendix B Tabulation of Agencies and Individuals Contacted During Preparation of Report REFERENCES LIST OF TABLES PAGE TABLE NO. 1 1 1 2 2 111-1 Total Rainfall Depth on Lakewood Gulch and Tributaries in Denver and Lakewood 5 111-2 Drainage Sub-basin Characteristics 6 6 6 6 7 7 8 111-3 Typical Computer Hydrograph Printout 111-4 Flood Peaks and Volumes, Existing Land Development 111-5 Flood Peaks and Volumes, Estimated Future Land Development 16 VI-l Comparison of Benefits and Costs VI-2 Annual Unit Costs for Operation and Maintenance VI-3 Unit Prices used in Construction Cost Estimate 20 20 20 21 VI-4 Summary of Construction Costs, by Construction Phases and Reaches LIST OF FIGURES Figure No. 111-1 Comparative 100-Year Hydrographs Computed along Lakewood Gulch 111-2 Hydrographs at Confluence of Lakewood Gulch and South Platte River 111-3 Projected Peak Discharges on Lakewood Gulch Channel PAGE NO. 9 10 11 12 13 22 23 23 24 Page No. 14 14 15