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Cachuma Project
Cachuma Project | Project History | Project Data | Contact Information

Project Data
Land Areas (1992)
Area Irrigated and Crop Value


Project # 368

Land Areas (1992)
Irrigable Area
Full Irrigation Service500 acres
Supplemental Service23,606 acres
Temporary Irrigation Service0 acres
Number of Irrigated Farms760
Residential, Commercial, Industrial Lands14,584 acres
Total Irrigable Lands38,690 acres

Population Served
Farm Population Served2,315
Non-Farm Population Served146,300
Total Population Served148,615

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Area Irrigated and Crop Value
YearActual Area Irrigated (Acres)Crop Value (Dollars)

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Project Water Supply
Project Water Quality


Project Water Supply

Current Conditions

Reservoir Storage

California Data Exchange Center Station - Cachuma Lake (Monthly storage and precipitation)

Weather Conditions (NOAA)



Santa Ynez River below Los Laureles Canyon near Santa Ynez (USGS)
Streamflow Forecast Map

Spring and Summer (NRCS)
Snowpack Information

Mountain Snowpack Maps for Great Basin and California
Drought Index

Palmer Drought Index Map

Historic Conditions

Annual Precipitation
Normal15.87 in
Maximum - 198340.74
Minimum - 19894.33 in
Santa Barbara, California 1961-1990

Mean Annual69.5 ? F
Daily Maximum - 07/02/1985109 ?F
Daily Minimum - - 12/22/199020 ?F
Santa Barbara, California 1941-1995
Growing Season365 days
Elevation of irrigable area0-500 ft

Santa Ynez River
Drainage area near Pueblo Dam417 sq mi
Annual discharge:

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Project Water Quality

Santa Barbara Coastal

Santa Ynez

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Facilities in Operation
Storage Facilities
Carriage Facilities
Pumping Plants


Facilities in Operation
Storage Dams5
Pumping Plants5
Pipelines24.3 mi
Tunnels7.5 mi

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Storage Facilities

Bradbury Dam

Carpinteria Dam

Glen Anne Dam

Lauro Dam

Ortega Dam

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Carriage Facilities
South Coast Conduit
TypeReinforced concrete
LocationGenerally east along the Pacific Coast from Tecolte Tunel outlet portal near Goleta, California, to vacinity of Carpenteria, California.
Construction period1950-1953
Length24.3 mi
Capacity70 cfs
Diameter48-27 in

Sheffield Tunnel
LocationOn the South Coast Conduit within city limits of Santa Barbara , California
Construction period1951-1953
Length5,968 ft
Capacity22 cfs
Cross section:Horseshoe
Diameter7 ft
Lining thickness3-7 in

Tecolote Tunnel
LocationFrom Cachuma Reservoir to Glen Anne Reservoir, northwest to Goleta, California
Construction period1950-1956
Length33,557 ft
Capacity100 cfs
Cross section:Horseshoe
Diameter7 ft
Lining thickness4-8 in

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Pumping Plants
DesignationNumber of unitsTotal capacity, cfsTotal dynamic head, ftTotal horsepower
Carpenteria Distribution System
Lateral 10-L10.7310
Shepard Mesa Extension21.8193
Goleta Distribution System
Lateral 13-130.7225
Summerland Distribution System
Lateral 3

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Last updated: Apr 18, 2011