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<br />. <br /> <br />'~ <br /> <br />- 5 - <br /> <br />. <br /> <br />11,501 -13,000 ft MSL <br />Above 13,000 ft MSL <br /> <br />.7PMP <br />.6PMP <br /> <br />.50 (.7 PMP) <br />.50 (.6 PMP) <br /> <br />Minor - General Storm East <br />6,000 - 12,000 ft MSL <br />Above 12,000 ft MSL <br />General Storm West <br />5,000 - 8,000 ft MSL <br />Above 8,000 ft MSL <br />Local Storm <br />lQ,OOO -11,500 ft MSL <br />11,501 - 13,000 ft MSL <br />Above 13,000 ft MSL <br /> <br />.50 (.8 PMP) <br />.50 (.7 PMP) <br /> <br />.50 (.8 PMP) <br />.50 (.7 PMP) <br /> <br />.50 (.8 PMP) <br />.50 (.7 PMP) <br />.50 (.6 PMP) <br /> <br />The IDF shalI be determined eonsidering basin size, the altitude of the basin, various soil <br />permeability, the various vegetative covers, and other factors related to the routing of the storm <br />event. <br /> <br />Existine: Dams <br />. INFLOW DESIGN FLOOD REQUIREMENTS <br /> (Without Adjustment for Elevation) <br />Hazard Class Hil!h Sil!nificant Low NPH <br />Dam Size <br />Large .75 (.9 PMP) .50 (.9 PMP) 100 YR 50YR <br />SmalI .75 (.9 PMP) .50 (.9 PMP) 100 YR 25YR <br />Minor .50 (.9 PMP) 100 YR 50YR 25YR <br /> <br />The HMR PMP used to determine the IDF may be reduced based on the average elevation of <br />the drainage basin. The total PMP for determination ofthe IDF for drainage basins above 5, <br />000 (ft) MSL is in accordance with the folIowing: <br /> <br />INFLOW DESIGN FLOOD REQUIREMENTS FOR EXISTING DAMS <br />REDUCED FOR ELEVATION <br /> <br /> Hazard Classification Hil!h Sil!nificant <br /> Dam Size <br />. Large - General Storm East <br /> 6,000 - 12,000 ft MSL .75 (.8 PMP) .50 (.8 PMP) . <br /> Above 12,000 ft MSL .75 (.7 PMP) .50 (.7 PMP) <br /> General Storm West <br />