Photo courtesy of
S.B. County Flood Control
Click to view Water Sources Diagram
The Cachuma Project is located on
the Santa Ynez River approximately 25 miles northwest of Santa Barbara and stores flood
waters of the Santa Ynez River which would otherwise flow to the ocean. Lake Cachuma is a
reservoir that is created by Bradbury Dam, and originally had a capacity of 205,000 acre
feet. It now has a capacity of approximately 190,000 acre-feet as a result of the
accumulation of silt in the reservoir.
diverted from Lake Cachuma through the Tecolote Tunnel, which extends approximately 6.4
miles through the Santa Ynez Mountains to the headworks of the South Coast Conduit.
The South Coast Conduit facilities include a steel
pipeline which runs a distance of approximately 24 miles and four regulating reservoirs --
Glen Anne Dam and Reservoir with a capacity of 470 acre feet (which is currently
not in service pending additional seismic safety review), Lauro Dam and Reservoir, with a
capacity of 640 acre feet, Ortega Dam and Reservoir with a capacity of 60 acre feet, and
Carpinteria Reservoir with a capacity of 44 acre feet.
The Cachuma Project is operated by the U.S. Bureau of
Reclamation and the South Coast Conduit facilities are operated by the Cachuma Operation
and Maintenance Board ("COMB"), a joint powers agency which was created under
the laws of the State of California by an agreement of all of the member units. The COMB
Board consists of a representative appointed from each of the Member Units, the City of
Santa Barbara, Goleta Water District, Carpinteria Valley Water District, the District and
Santa Ynez River Water Conservation District, Improvement District No. 1.
Bradbury Dam (Cachuma Lake):
1950 - June 1953
||Type: Earth &
rock filled structure
|Volume: 6.7 million
||Height: 279 feet
||Yield: 27,514 acre
|Watershed: 421 square
The long term Cachuma Renewal Master Contract, Member Unit
Contracts and Water Rates Agreement provide for continued water deliveries to the Member
Units through September 30, 2020, with additional rights to renew at that time. The price
of water to the District under the Renewal Contract is currently projected to be
approximately $116.00 per acre foot for agricultural water and $105.00 per acre foot for
municipal and industrial water.
||Juncal Dam is solely owned and
operated by the District. It was constructed during the period 1921 to 1930. It was
dedicated to the District on August 28, 1930. Juncal Dam, located nine air miles from
Montecito near the headwaters of the Santa Ynez River, is a concrete gravity-arch dam with
a height of 160 feet.
Jameson Lake, which is
formed by Juncal Dam, has a surface area of 138 acres when full and stores 5,291 acre feet
or about 1.7 billion gallons.
|Jameson Lake water is diverted by
pipeline to the Doulton Tunnel, 2.2 miles in length, where an additional supply is gained
from seepage. The water is treated at the Tunnel South Portal at the Doulton Treatment
Plant and at the Bella Vista Treatment Plant, from where it is transported through the
High Line transmission main to ten storage reservoirs on the south side of the Santa Ynez
Mountains. Juncal Dam was strengthened in 1990.
Dam (Jameson Lake):
|Volume: 2300 cubic
||Height: 80 feet
|Width Across Top: 240
Streambed: 15 feet
|Spillway Crest: 55
||Width: 100 feet
|Watershed: 14 square
Conservation Corps, Gilbraltar, Camp Company 2928.
The District diverts water from the Santa Ynez River at
Jameson Reservoir (Juncal Dam) pursuant to the rights granted in the related actions Gin
S. Chow, et al. v. City of Santa Barbara and Montecito Water District, Case No. 19188
(Super Ct., Santa Barbara Co., 1930), as affirmed by the California Supreme Court Gin
S. Chow v. City of Santa Barbara, 217 Cal. 673, 22 Pac. 5 (1933). District water
rights on the Santa Ynez River were again affirmed in Stephen Jordan et al. vs. City
of Santa Barbara, et al., Case No. SM072350, Superior Court, Santa Barbara County,
1994, affirmed by California Appellate Court on June 27, 1996, 96 D.A.R.8028. Pursuant to
these decisions and other claimed rights, as well as a special use permit issued by the U.
S. Department of Agriculture, Los Padres National Forest, the District also diverts water
from Fox Creek and Alder Creek, tributaries of the Santa Ynez River. The District is
currently involved in consultation under the Endangered Species Act with the U.S. Forest
Service and the U.S. Fish and Wildlife Service concerning these tributary diversions,
which may result in some reduction from the District's historic level of diversions.
Photo courtesy of CCWA
|The State Water Project is a
project that delivers State Project water to communities in Santa Barbara and San Luis
Obispo Counties through the 102 mile Coastal Branch of the State Aqueduct and the 42 mile
Santa Ynez Extension ending at Lake Cachuma. Construction was completed in April 1997.
The District originally contracted with CCWA (link to web site)
under the Water Supply Agreement for 2,700 acre feet of water from the State Water
Project. With the consolidation with Summerland Water District, the
District's State Water Project entitlement increased from
2,700 acre feet to 3,000 acre feet.When combined with other District sources of water, the
District has adequate supplies. The District is considering whether to sell the Summerland
entitlement, on an interim or permanent basis.
Photo by J. D. Paley
|Water Wells: The District pumps
about 700 acre feet of groundwater per year from the Montecito Basin. Entitlements to
groundwater in the Montecito Basin have not been adjudicated. The District estimates the
safe yield of the Montecito Basin to be approximately 1,650 acre feet. The other
groundwater pumpers in the Montecito Basin are several hundred private well owners. The
amount of groundwater pumped by each of these private well owners is not accurately known
by the District; however, the aggregate pumping (including District pumping) does not
exceed the safe annual yield.