DWR’s Division of Safety of Dams Updates Information on California Dams

  • by California Department of Water Resources
  • Sep 4, 2018
  • Water News

SACRAMENTO – The California Department of Water Resources (DWR) Division of Safety of Dams (DSOD) today released updated information on the 1,246 dams under the state’s jurisdiction, listing each dam’s downstream hazard classification, condition assessment and reservoir restriction status.

The 2018 update reflects several changes, including adjustments to some hazard classifications based on inundation maps submitted by dam owners as required by Senate Bill 92 (Committee on Budget and Fiscal Review). The downstream hazard is based solely on potential downstream impacts to life and property should the dam fail when operating with a full reservoir. This hazard is not related to the condition of the dam or its appurtenant structures.

DSOD engineers and engineering geologists assess dam conditions based on annual physical inspections and comprehensive re-evaluation studies, as well as technical analyses submitted by dam owners. This information can change from year to year as new deficiencies are identified and others are remediated. If DSOD identifies an issue that presents a significant dam safety concern, it may place restrictions on a reservoir’s operations until deficiencies are corrected.

“Public safety is the foundation of DSOD’s independent dam safety oversight,” said Sharon Tapia, Chief of DSOD. “With California’s infrastructure aging, we take our job very seriously, inspecting each jurisdictional dam annually and working closely with dam owners to correct identified issues on an ongoing basis.”

The 2018 update also includes dams taken out of, or brought into DSOD’s jurisdiction. Over the past year, five dams became non-jurisdictional by either being completely removed or reduced to less than jurisdictional size. Two existing dams were added into DSOD’s inventory.

 

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