Bethany Dams Valve and Gate Exercise 2026 (OM-DFD-2026-017)

Department of Water Resources DWR Dam Safety Services staff will perform valve and gate exercises at the Bethany Forebay Dam BFD. The BFD outlet works houses a butterfly valve BFV and a conduit in a tunnel between the valve chamber and downstream portal structure. The BFV and slide gate associated with the low-level outlet shall be exercised by fully opening and closing. To avoid a sudden release of water to the drainage ditch, the conduit between both valves will require controlled low flow rel...