Lake Lagunitas

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Lake Lagunitas
Lake Lagunitas.jpg
The lake in 2009
Location Marin County, California
Coordinates 37°56′51″N 122°35′46″W / 37.94750°N 122.59611°W / 37.94750; -122.59611[1]Coordinates: 37°56′51″N 122°35′46″W / 37.94750°N 122.59611°W / 37.94750; -122.59611[1]
Type reservoir
Primary inflows Lagunitas Creek
Primary outflows Lagunitas Creek[2]
Catchment area 1.8 square miles (4.7 km2)[2]
Basin countries United States
Surface area 22 acres (8.9 ha)[2]
Water volume 341 acre feet (421,000 m3)[2]
Surface elevation 791.3 feet (241.2 m)[2]

Lake Lagunitas is a reservoir on Lagunitas Creek in Marin County, California.

Lake Lagunitas is one of seven reservoirs providing potable water to the Marin Municipal Water District.[3] It is the oldest and smallest lake in the Mount Tamalpais watershed, with surface area of 22 acres (0.034 square miles or 8.9 hectares).[citation needed] About a mile east to Lake Lagunitas is Phoenix Lake, with surface area of approximately 25 acres. And 0.3 miles to the west of Lake Lagunitas is Bon Tempe Lake, which has an area of (a guess here) 280 acres. Further to the west of Bon Tempe Lake is Alpine Lake with an area of 224 acres.

The only major lake to the west of Fairfax-Bolinas Road is Kent Lake, the largest in the watershed with surface area of 432 acres.

Lagunitas Dam[edit]

The reservoir is impounded by Lagunitas Dam, an earth dam 48 feet (15 m) tall, 433 feet (132 m) long, and 12 feet (3.7 m) wide. The dam was completed in 1872.[2]

See also[edit]


  1. ^ "Lake Lagunitas". Geographic Names Information System. United States Geological Survey. 
  2. ^ a b c d e f "Dams Within the Jurisdiction of the State of California (H-M)" (PDF). California Department of Water Resources, Division of Safety of Dams. Retrieved August 24, 2014. 
  3. ^ "MMWD". Retrieved July 25, 2010.