Folsom Dam


Folsom Dam

The Central California Area Office is headquartered at Folsom Dam, 23 miles east of California’s capital city of Sacramento, with resource offices located at New Melones and Lake Berryessa.

The Area Office manages water and land resources in 12 counties, including facilities of the Central Valley Project - American River, Auburn-Folsom South Unit and East Side Divisions, and facilities of the Solano Project.

The Office’s jurisdiction extends from the coast to the crest of the Sierra, and from the American River Basin to the Stanislaus River Basin. The Central California Area Office also manages the recreation areas at Lake Berryessa and New Melones reservoir, has a long-term lease with the California Department of Parks and Recreation for Folsom Lake, Lake Natoma and Auburn area, and an agreement with the California Division of Forestry to manage the lands associated with the Auburn Unit.

Folsom Dam and reservoir is a major water management facility located within a large metropolitan area. With a capacity of 976,000 acre-feet, the Folsom reservoir catches runoff from the extensive American River watershed and are the key flood control structures protecting the Sacramento metropolitan area.

RegionFacilities in Mid-Pacific | Mid-Pacific Home Page
Dam Type
WatercourseAmerican River
Net Generation691,358,000 kWh
Original Construction1948-1956
Modified Construction
National ID NumberCA10148
Hydrologic Unit Code

Structural Height340 ft
Hydraulic Height (Normal Operating Depth at Dam)275.4 ft
Top Parapet (Elevation)484.0 ft
Spillway Crest Elevation
Crest Elevation480.5 ft
Crest Length1400 ft
Crest Width36.25 ft
Base Width270 ft
Volume of Dam Construction Materials1170000 cu yd
Streambed at Dam Axis
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)

Hydraulics & Hydrology
Volume2762000 acre-ft
Total Water Storage at Elevation1010000 acre-ft at 466
Maximum Water Surface Elevation480.0 ft
Normal Water Surface Elevation
Spillway Type
Auxiliary Spillway
Spillway Capacity at Elevation567000 cfs at 475.4
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation115000 cfs at 30960 ft
Diversion Capacity at Elevation
Drainage Area1875 sq mi
Hydrometeorological Report (HMR)HMR 58
Probable Maximum Flood (PMF) Report1996 General rain on snow

Contact Information
TitleArea Office Manager
OrganizationCentral California Area Office
Address7794 Folsom Dam Road
CityFolsom, CA 95630
Phone (Office)916 989-7200
TitleArea Office Manager
OrganizationCentral California Area Office
Address7794 Folsom Dam Road
CityFolsom, CA 95630
Phone (Office)916 989-7200

Last updated: Jun 04, 2009