Hydrologic Issues for Dams - Association of State Dam Safety Officials
Hydrologic Issues for Dams - Association of State Dam Safety Officials
Hydrologic Issues for Dams - Association of State Dam Safety Officials
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• Update Sacramento District 1962 studies, “Generalized Snowmelt Run<strong>of</strong>fFrequencies.”• Continue to upgrade the hydrologic models used <strong>for</strong> dam safety evaluation suchas the Corps <strong>of</strong> Engineers HEC-1, HEC-2, HEC-HMS and HEC-RAS. The HEC-1 model needs to be retained because it contains the snowmelt computationsrequired <strong>for</strong> hypothetical floods in the Western Regions such as Cali<strong>for</strong>nia,Oregon and Washington.• Develop a uni<strong>for</strong>m method <strong>of</strong> areal distribution <strong>of</strong> the PMP especially applicablein orographic areas.• Technical review <strong>of</strong> the recently published PMP (HMR 57 and 58) reports <strong>for</strong>reasonableness.• Develop a temperature sequence <strong>for</strong> PMP estimates with snow so that it reflectsthe diurnal variation <strong>of</strong> temperatures.• Develop a “Windows-based” dambreak model. This is very important becausethe model is used <strong>for</strong> Inflow Design Flood selection process. Danny Fread hasretired from service and the continuation <strong>of</strong> the program development <strong>of</strong> hisworld-renowned DAMBRK is unknown. Additionally, this model is DOS-basedonly.Paper 12 - Cecilio 64
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