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FLOOD08407
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Last modified
1/29/2010 10:12:03 AM
Creation date
10/5/2006 3:35:53 AM
Metadata
Fields
Template:
Floodplain Documents
County
Jefferson
Adams
Community
Arvada, Westminster
Stream Name
Little Dry Creek
Basin
South Platte
Title
Major Drainageway Planning
Date
4/1/1979
Prepared For
Jefferson County / Adams County
Prepared By
UDFCD
Contract/PO #
&&
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />. <br />. <br />. <br />. <br />'. <br />I <br />. <br />I <br />. <br />. <br />'. <br />. <br />. <br />I <br />I <br />. <br />. <br />. <br />I <br /> <br />LITTLE DRY CREEK (Adco) <br />MAJOR DRAINAGE WAY PLANNING-PHASE 'B' <br /> <br />TABLE OF CONTENTS <br /> <br />LETTER OF SUBMITTAL <br />LIST OF TABLES <br />LIST OF FIGURES <br /> <br />I. MAJOR DRAINAGEWAY PLANNING-LITTLE DRY CREEK <br />Introduction <br />Existing Flood Hazards <br />Summary of the Phase 'B' Plan <br /> <br />II. STUDY AREA DESCRIPTION <br />Drainage Basin Characteristics <br />Study Reach Description <br />Shaw Heights Tributary <br /> <br />III. SUMMARY OF THE HYDROLOGIC ANALYSIS <br />Derivation of Hydrographs <br />Rainfall Data <br />Land Use <br />Loss es <br />Flood Hydrographs <br /> <br />IV. SUMMARY OF THE PHASE 'A' ANALYSIS <br />Flood Plains and Flood Damage <br />Alternatives <br />Benefi t/Cost Analysis <br />Selection of the Recommended Plan <br />Legal Review <br /> <br />V. DESIGN CONSIDERATIONS AND CRITERIA <br />Channel Design <br />Structures <br />Right-of-Way <br />Operation and Maintenance Requirements <br />Water Quality <br />Parks and Recreation <br />Administration <br />Implementation <br />Cost Estimate <br /> <br />VI. REFERENCES <br />Appendix A-Phase 'B' Directive Mer.lOrandum <br />Appendix B-Legal Review <br />Appendix C-Agency/lnterested Party Contacts <br /> <br />DRA WINGS <br /> <br />Major Drainageway Planning sheets 1 through 30 <br /> <br />LIST OF TABLES <br /> <br />PAGE <br /> <br />I-I Jurisidictional Cost Breakdown Summary <br /> <br />I - 3 <br />ill - 2 <br /> <br />III-I Rainfall Values <br /> <br />Pa~e <br /> <br />III-2 Little Dry Creek Drainage Basin Data <br /> <br />][-2 <br /> <br />I - I <br />I - I <br />I - I <br />I - 2 <br /> <br />IV-1 Flood Damage By Jurisdiction <br />IV-2 Alternatives Investigated-Little Dry Creek <br />V-l Design Criteria <br /> <br />)[- <br /> <br />J'i[- 2 <br /> <br />]j[- 3 <br /> <br />V-2 Unit Costs <br /> <br />)[ - 5 <br /> <br />[ - I <br />[ - I <br />II-I <br />[-2 <br /> <br />V-3 Annual Operation and Maintenance Costs <br /> <br />)[ - 5 <br /> <br />V-4 Cost Breakdown Summary-By Reach <br /> <br />)[-6 <br /> <br />ill - I <br />ill - t <br />ill - I <br />ill - I <br />][-2 <br />][-2 <br /> <br />LIST OF FIGURES <br /> <br />I-I Selected Plan, Sheet 1 <br /> <br />Ill- I <br />Ill- I <br />Ill- I <br />1ll-2 <br />1ll-2 <br />1ll-2 <br /> <br />1-2 Selected Plan, Sheet 2 <br />1-3 Selected Plan, Sheet 3 <br /> <br />1-4 Selected Plan, Sheet 4 <br /> <br />III-I Peak Flood Discharges-Sta 0+00 to 250+00 <br /> <br />')[ - t <br />)[- I <br />)[- I <br />11-2 <br />11-2 <br />11-3 <br />11-3 <br />ll- 3 <br />11-4 <br />11-4 <br /> <br />III-2 Peak Flood Discharges-Sta 250+00 to Upstream Study Limits <br /> <br />IIl-3 Peak Flood Discharges - Shaw Heights Tributary, Tributary B, and <br />Tributary C <br /> <br />III-4 Rainfall Hyetograph - 100 Year Storm <br />III-5 100 Year Flood Hydrograph-Little Dry Creek at Clear Creek <br />I1I-6 100 Year Flood Hydrograph-Little Dry Creek at Federal Blvd. and Sheridan Blvd. <br />III-7 100 Year Flood Hydrograph-Little Dry Creek at Wadsworth and Pomona Lakes <br />I1I-8 100 Year Flood Hydrograph-Little Dry Creek at Croke Canal and Simms Street. <br />I1I-g 100 Year Flood Hydrograph-Shaw Heights Tributary at 80th Ave. and U.S. 36 <br /> <br />1II-10 100 Year Flood Hydrograph-Lake Arbor and Inflow From Tributaries "B" and "C". <br /> <br />IV-1 Alternative Matrix <br /> <br />NOTE: All figures appear at the end of the respective sections. <br />
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