CALIFORNIA
AT A GLANCE
STATE WATER
PROJECT
The California State Water Project (SWP)
is the largest state-built and operated
multipurpose water and power system in
the United States. The 701 miles of canals
and pipelines provide drinking water for
25 million people and irrigation for
750,000 acres of farmland. The SWP also
provides power generation, year-round
recreation, flood protection, and helps
maintain Delta water quality.
California’s history, landscape and
economy have been shaped by water.
To address nature’s water imbalance
and allow for growth, water has to be
transferred from where it is plentiful
to where it is needed. Californians
provided the solution with passage of
the 1960 California Water Resources
Development Bond Act, which authorized
$1.75 billion for construction of the SWP.
The California State Water Project (SWP)
is the largest state-built and operated
multipurpose water and power system in
the United States. The 701 miles of canals
and pipelines provide drinking water for
25 million people and irrigation for
750,000 acres of farmland. The SWP also
provides power generation, year-round
recreation, flood protection, and helps
maintain Delta water quality.
California’s history, landscape and
economy have been shaped by water.
To address nature’s water imbalance
and allow for growth, water has to be
transferred from where it is plentiful
to where it is needed. Californians
provided the solution with passage of
the 1960 California Water Resources
Development Bond Act, which authorized
$1.75 billion for construction of the SWP.
HISTORY
OVERVIEW
William R. Gianelli PumpingGenerating Plant Gallery
Ira Chrisman Pumping Plant
Barker Slough Pumping Plant
Pyramid Lake
CALIFORNIA DEPARTMENT OF WATER RESOURCES
THE SWP
The project was constructed in stages
from north to south. Oroville Dam,
built from 1961 to 1967, is the tallest
dam in the United States (770 feet) and
one of the main sources of hydropower
on the project.
Construction of the Delta pumping
facilities, South Bay facilities, San Luis
Reservoir (built by the U.S. Bureau of
Reclamation and operated by DWR) and
the California Aqueduct was completed
in the late 1960s. The next phase
delivered water over the Tehachapi
Mountains at Edmonston Pumping Plant.
Edmonston was completed in 1973
and has the highest lift per volume in the
world with a single lift of 1,926 vertical
feet and a maximum volume of 4,480
cubic feet per second. The newest facility
of the SWP – the Cherry Valley Pumping
Station on the East Branch Extension –
was completed in 2003.
The SWP has been recognized by the
American Society of Civil Engineers as
one of the outstanding engineering
achievements of the 20th Century.
HYDROELECTRIC
POWER
Project hydroelectric plants help keep
water delivery rates to SWP contractors
affordable by producing much of the
electricity needed to pump water. Costs
are also defrayed by pumping during
off-peak hours when electricity is less
expensive and generating power for sale
during periods of high demand when
power is more expensive.
SWP FACTS and FIGURES
GENERAL INFORMATION
Total Length of Canals and Pipelines 701 miles (1,128 kilometers)
Number of Storage Facilities 34
Lakes/Reservoirs (primary) 21
Total Reservoir Storage 5.8 million acre-feet (7.2 cubic kilometers)
Largest Reservoir Capacity 3.5 million acre-feet (4.3 cubic kilometers)
Largest Reservoir Surface Area 15,810 acres (6,398 hectares)
Longest Reservoir Shoreline 167 miles (269 kilometers)
Highest Dam Structure 770 feet (235 meters)
Largest Dam Structure 80 million cubic yards (61 million cubic meters)
Longest Dam Crest 42,000 feet (12,802 meters)
Highest Dam Crest Elevation 5,785 feet (1,763 meters)
CALIFORNIA AQUEDUCT
Starting Maximum Pumping/Canal Volumes 10,670 CFS/10,300 CFS
Highest Pump Lift/Volume 1,926 feet (587 meters) / 4,480 CFS
Largest Pumping Capacity 15,450 CFS
Largest Canal Capacity 13,100 CFS
Widest Part of Canal 110 feet (33.5 meters)
Deepest Part of Canal 32.8 feet (10 meters)
HYDROELECTRIC POWER GENERATION
Highest Single Year Generation 8.6 billion kWh
* Average System Generation 6.67 billion kWh
* Average System Purchases 2.66 billion kWh
* Average Pumping Load 6.51 billion kWh
*Average based on 1988-2007
WATER DELIVERIES
Average Yearly Delivery (1990-2009) 2.4 million Acre-Feet
Highest Delivery (2006) 3.7 million Acre-Feet
Lowest Delivery (1977) 0.97 million Acre-Feet
(After full deliveries were started in 1973)
Lake Oroville
State Water
Project Facilities
1 Hyatt PGP
2 Thermalito
Diversion Dam P
3 Thermalito PGP
4 Barker Slough PP
5 Cordelia PP
6 Banks PP
7 South Bay PP
8 Del Valle PP
9 Gianelli PGP
10 Dos Amigos PP
11 Las Perillas PP
12 Badger Hill PP
13 Devil’s Den PP
14 Bluestone PP
15 Polonio Pass PP
16 Buena Vista PP
17 Teerink PP
18 Chrisman PP
19 Edmonston PP
20 Alamo P
21 Oso PP
22 Warne P
23 Castaic PGP
24 Pearblossom PP
25 Mojave Siphon P
26 Devil Canyon P
27 Greenspot PS
28 Crafton Hills PS
29 Cherry Valley PS
Power Plant (P)
Pumping Plant (PP)
Pump Generation
Powerplant (PGP)
Pump Station (PS)
1000
2000
3000
0
Elevation in feet
Elevation in feet
0 100 200 300 400 500 600
Distance in miles Distance in miles
1 3 2
4
5
6
7
8
9
10
11
16
17
18 19
12
13 14 15
20 21 22
23
24
25
27
28
29
0
1000
2000
3000
4000
The Delta
Redding
The BayDelta
Lake
Oroville
Frenchman
Lake
Antelope
Lake
Lake
Davis
Clifton Court
Forebay
North Bay
Aqueduct
South Bay
Aqueduct
Lake Del Valle
San Luis
Reservoir
Los Banos
Reservoir
Little
Panoche
Reservoir
Quail Lake
Pyramid
Lake
Castaic
Lake
East Branch
West
Branch
Silverwood Lake
Los
Angeles
S a c r a m e n t o R i v e r
Feather River
Co a st a l B r a n c h
West Branch
Crafton Hills
Reservoir
East Branch
Extension
Lake
Perris
3 2
1
5
6 7 8
4
9
10
11 12 1413 15
16
18
19
2120
24
17
22
23
25
27
28 29
26
Sacramento
C a l i f o r n i a A q u e d u c t
26
PROJECT FUNDING
SWP water deliveries go to 29
contracting agencies that have contracts
for annual deliveries of water. Through
these contracts, the public agencies are
repaying the $1.75 billion general
obligation bonds, plus interest, and
additional bonds issued for added
facilities. SWP contractors also pay
for operations and maintenance costs,
such as labor and equipment, and
environmental projects that help
mitigate for any impacts from the
Project’s water operations. The
contractors have made cumulative
payments totaling more than
$9 billion.
State Water Project Contractor Service Areas
1
2
3
4
5
6
7
8
9
10
1 1
12
13
1 4
15
16
1 7
18
19
20
21
22
23
24
25
26
27
28
29
A.D. Edmonston
Pumping Plant
Telephone: 1.800.272.8869
TTY 916.653.6226
www.water.ca.gov April 2011
Plumas County Flood Control & Water Conservation District
County of Butte
City of Yuba City
Napa County Flood Control & Water Conservation District
Solano County Water Agency
Alameda County Water District
Alameda County FCWCD: Zone 7
Oak Flat Water District
Santa Clara Valley Water District
County of Kings
Empire West Side Irrigation District
Tulare Lake Basin Water Storage District
Kern County Water Agency
Dudley Ridge Water District
San Luis Obispo County Flood Control & Water Conservation District
Santa Barbara County Flood Control & Water Conservation District
Ventura County Flood Control District
San Gabriel Valley Municipal Water District
The Metropolitan Water District of Southern California
Antelope Valley-East Kern Water Agency
Mojave Water Agency
Castaic Lake Water Agency (Devil’s Den)
Littlerock Creek Irrigation District
Palmdale Water District
Crestline-Lake Arrowhead Water Agency
San Bernardino Valley Municipal Water District
San Gorgonio Pass Water Agency
Desert Water Agency
Coachella Valley Water District
1
2
3
4
5
6 7
9 8
10
11
12
13
15
16
17
18
18
19
20
21 2224 23
26 25
27
28
29
18
14
Urban-based
Agriculturally-based
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