California's Dam Safety Program—The Development of Hydrology for Dams (
by Vernon H. Persson, Div of Safety for Dams, CA, USA,
Emil R. Calzascia, Div of Safety for Dams, CA, USA,
Document Type: Proceeding Paper
Part of: Irrigation Systems for the 21st Century
California's water code provides for supervision of dams and reservoirs with regard to protection of life and property. This code is administered by the Department of Water Resources through its Division of Safety of Dams. These statutes give authority to establish design criteria for quality construction and safe operation of 1185 privately and publicly owned dams; this criteria includes hydrology for the design flood. Four parameters are employed in selecting the return period for the design storms for any specific dam site and drainage area; storage volume, dam height, population of inundation area, and potential property damage that would be experienced upon failure. This method allows selecting the appropriate flood above the minimum 1:1000 year return period through the PMF for use in sizing adequate spillways.
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