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FLOOD11040
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Last modified
5/17/2010 12:49:53 PM
Creation date
11/29/2007 1:15:42 PM
Metadata
Fields
Template:
Floodplain Documents
County
Arapahoe
Douglas
Stream Name
Cherry Creek Reservoir
Basin
South Platte
Title
Probable Maximum Precipitation Study for Cherry Creek Reservoir - Technical Review - Executive Summary
Date
8/1/2003
Prepared For
CWCB
Prepared By
Applied Weather Associates, LLC
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />Explicit factors and procedures that produced the A W A team results are: <br /> <br />1. Use of Colorado storms <br />2. Storm maximization using HMR 55A maximum dewpoint values <br />3. Storm transpositioning using HMR 55A maximum dewpoint maps <br />4. Elevation and barrier adjustments to account of elevated terrain effects <br />5. Critical storm centering and orientation over the Cherry Creek: basin <br />6. Depth- Duration curve envelopment <br />7. Depth- Area curve envelopment <br /> <br />The extreme rainfall storm centers used in this study are: <br /> <br />1. June 3-4, 1921 - Pueblo Center (Penrose Storm) <br /> <br />2. May 30-31,1935 - Zone A Centers <br /> <br />3. May 30-31,1935 - E Center <br /> <br />4. May 30-31, 1935 - Hale Center <br /> <br />5. June 16, 1965 - Plum Creek: Center <br /> <br />6. June 17, 1965 - Falcon Center <br /> <br />7. June 18, 1965 - Holly Center <br /> <br />8. July 3, 1981 - Frijole Creek: Center <br /> <br />9. July 27-28, 1997 - Fort Collins Center <br /> <br />10. July 28-29, 1997 - Pawnee Creek: Center <br /> <br />The following figures show the rainfall pattern produced by each storm moved over the <br />Cherry Creek: drainage basin. Each storm rainfall pattern is positioned and rotated over the basin <br />such that the maximum amount of rain falls within the basin boundaries. The rainfall amount is <br />increased to a maximum value using standard PMP procedures. <br />
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