13 Nov 2025

New forecast-informed decision-making tool implemented at Coyote Valley Dam and Lake Mendocino

UKIAH, Calif. – Leaders from the U.S. Army Corps of Engineers (USACE), Sonoma County Water Agency (Sonoma Water), UC San Diego’s Scripps Institution of Oceanography Center of Western Weather and Water Extremes (CW3E) and California Department of Water Resources (DWR) entered a new era in reservoir operations with the signing of updates to the water control manual for Coyote Valley Dam and Lake Mendocino.

15 Jan 2023

USACE announces high-flow release at Coyote Valley Dam

The U.S. Army Corps of Engineers San Francisco District (USACE) will begin a series of high-flow releases from Coyote Valley Dam at Lake Mendocino starting mid-day on Monday, Jan. 16, in response to reservoir levels and improving downstream conditions on the Russian River. No increased releases will occur at Warm Springs Dam at Lake Sonoma during this time.

18 Aug 2020

FIRO HELPS EXTENDS REC SEASON AT LAKE MENDOCINO, SOUTH BOAT RAMP UPDATE

The U.S. Army Corps of Engineers will close access to the South Boat Ramp at Lake Mendocino effective Tuesday, Aug. 18, 9 a.m., due to low water levels. The lake’s other access point, the North Boat Ramp, has previously closed due to the same reason, and Mussel Dogs are no longer conducting inspections there. The two ramp areas, though, will remain open for day use and small non-motorized boating access to the lake.

28 Jan 2019

The Corps approves major deviation for Forecast Informed Reservoir Operations effort

VICKSBURG, Miss. -- The U.S. Army Corps of Engineers, South Pacific Division has approved a major