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<br />. <br /> <br />4. <br /> <br />HEC-l output summary listings <br />design storm with 0-5,10-20, <br />square mile areal adjustment. <br /> <br />for the 100-year <br />20-30, and 30-50 <br /> <br />. <br /> <br />. <br /> <br />A complete copy of the CUHP and HEC-l computer output <br /> <br /> <br />listing is available at MSMjSP Group, Denver, Colorado. <br /> <br />. <br /> <br />A more detailed description of the input variables for <br />the CUHPD and the HEC-l rainfall-runoff ahalys is are <br />~ listed in the following paragraphs. <br /> <br />2.2 Precipitation Analysis <br /> <br />. <br /> <br />. <br /> <br />For the precipitation analysis, rainfall data was ob- <br />tained from UD&FCD's isopluvial maps for the l-hour and <br />6-hour precipitation depths (Reference 4). <br /> <br />. <br /> <br />Rainfall depth isopluvials were determined for the en- <br />tire study area for the 10-, 50-, and 100-year recur- <br />rence intervals. The 2-, 3-, and 6-hour des ign storms <br />for each sub-basin were used to determine rainfall <br />depth distributions in accordance with the recently de- <br />veloped UD&FCD design rainfall distributions. For <br />sub-basins having a varied rainfall depth, as indicated <br />by the isopluvials, a weighted average was obtained by <br />proportioning the areas with respect to each isoplu- <br />vial. <br /> <br />. <br /> <br />. <br /> <br />. <br />