EBMUD owns and manages 31 dams as part of its water system. EBMUD's reservoir dams were built from the late 1800s to the late 1960s. EBMUD engineers inspect each dam monthly. The larger dams under jurisdiction of the Department of Safety of Dams (DSOD) are also inspected by the state of California annually. EBMUD periodically conducts an extensive seismic study of its dams.

EBMUD is in the process of evaluating each of these reservoirs and replacing them with tanks as appropriate. Resizing is needed to meet water requirements and to more efficiently run the EBMUD water distribution system. Tanks can be built to remain serviceable after an earthquake with greater reliability, reduce the cost of maintenance and provide better water quality. As a result of the resizing program, the number of dams owned and managed by EBMUD will decrease in future years.

For additional information about completed dam seismic evaluations and reservoir resizing projects click on the links below.

Berryman Reservoir - Berkeley
Briones Reservoir - Orinda
Central Reservoir - Oakland
Chabot Reservoir - Oakland
Dingee Reservoir - Oakland
Estates Reservoir - Oakland
San Pablo Dam - El Sobrante
Schapiro Reservoir - El Sobrante
South Reservoir - Castro Valley

If you have questions about an EBMUD dam or reservoir not listed above, please contact EBMUD's Community Affairs Office at mblackwe@ebmud.com.