The Lake County Water Resources Department is responsible for two branches: The Lake County Watershed Protection District; and Lakebed Management. The Lake County Watershed Protection District ( formerly known as the Lake County Flood Control and Water Conservation District) is a political subdivision of the State of California established under the Lake County Flood Control and Water Conservation Act, of the State Water Code in 1951. Under the County Board of Supervisors, which acts as its Board of Directors, the District is administered by the Water Resources Department.
The Department administers the National Flood Insurance Program for Lake County; plans and implements flood control projects including preliminary engineering and contract administration for groundwater management planning, watershed management planning and development of grant proposals.
The Department is responsible for maintaining 10.5 miles of levees and 13.4 miles of creeks in four zones of benefit and a groundwater detention structure on Kelsey Creek. The Department also operates and maintains the Adobe Creek Reservoir, the Highland Creek Reservoir, and the Highland Springs Park.
The Department has several citizens advisory task forces and committees that meet to review and recommend program activities. Zone 1, Adobe Creek; Zone 4, Scotts Creek; Zone 5, Kelsey Creek; Zone 8, Upper Middle Creek, Big Valley Groundwater Management Zone Commission, and the Clear Lake Advisory Committee
Lakebed Management is responsible for maintaining the public trust lands below the highwater mark (7.79 Rumsey) in Clear Lake in accordance with Lake County code, Chapter 23, the Shoreline Ordinance, and Chapter 639 in the State Statutes of 1973. The Lakebed Management processes permits and encroachment leases for all structures in the lake below 7.79' on the local Rumsey gauge. Lakebed maintains navigation aides, swim markers and swim areas; performs water quality monitoring; and provides support to the Sheriff's Department (CREWS), Department of Fish and Game, U. S. Army Corps of Engineers, and State Lands Commission. Lake enhancement programs such as algae management, aquatic plant management and the invasive mussel inspection program are also the responsibility of Lakebed Management.
In addition to working with other county departments, the Water Resources Department coordinates its various programs with Yolo County Flood Control and Water Conservation District, Lake County Vector Control District, Central Valley Flood Protection Board, State Department of Water Resources, State Lands Commission, State Water Resources Control Board, Central Valley Regional Water Quality Control Board, California Department of Fish and Game, U. S. Army Corps of Engineers, U. S. Forest Service, U. S. Bureau of Reclamation, Natural Resources Conservation Service, Bureau of Land Management, West Lake and East Lake Resource Conservation Districts, Federal Emergency Management Agency, Lake County Career Center and Cities of Clearlake and Lakeport.