PILARCITOS LK NR HILLSBOROUGH CA

Reservoir Levels Weather Hydrology


Pilarcitos Lake, located near Hillsborough, California, has a rich history dating back to the early 1900s when it was constructed as a source of drinking water for San Francisco. The lake is fed by a system of streams and has a capacity of approximately 13 billion gallons. The hydrology of the lake is unique as it relies heavily on snowpack in the surrounding mountains for its water supply. Specific surface flows are controlled by a network of dams and pipelines that carry the water to San Francisco. In addition to its importance as a water source, the lake also serves as a recreational area for activities such as fishing and hiking. Agricultural uses are limited due to the lake's designation as a protected watershed.

July 20, 2024

°F

°F

mph

Windspeed

%

Humidity

Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change 0%
Percent of Normal 100%
Minimum 675.75 ft
2021-10-20
Maximum 697.06 ft
2017-01-11
Average 690 ft
Dam_Height 103
Hydraulic_Height 95.8
Drainage_Area 3.8
Year_Completed 1866
Nid_Storage 3100
Hazard_Potential High
Primary_Dam_Type Earth
River_Or_Stream Pilarcitos Crk
Surface_Area 109
Dam_Length 520
Nid_Height 103

Regional Streamflow

15

Cubic Feet Per Second

5

Cubic Feet Per Second

0

Cubic Feet Per Second

2

Cubic Feet Per Second

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