NR 2002-40
September 11, 2002

Contact: Carol Dahmen
Mark Oldfield
Don Drysdale
Ed Wilson
(916) 323-1886


SACRAMENTO -- The California Department of Conservation has released the Geothermal Map of California, the most comprehensive map ever made of the state's geothermal resource areas, power plants, wells and springs.

While California's best-known volcanoes -- Mt. Shasta and Mt. Lassen -- are in the extreme northern part of the state, 19 Known Geothermal Resource Areas are scattered from Modoc and Siskiyou counties in the north to Imperial County in the south and from Mono County in the east to The Geysers in Lake, Sonoma and Mendocino counties.

There are about 1,400 wells in 14 California geothermal fields. Currently, about 740 of these are high-temperature geothermal wells able to produce about 2,622 megawatts of electricity -- more geothermally-derived electricity than any other state.

While only six counties have commercial geothermal projects capable of generating electrical power, 28 counties have low-temperature projects that use geothermal energy for things such as heating buildings and greenhouses, recreation, or aquaculture.

Inserts on the map detail most of the Known Geothermal Resource Areas, showing producing wells, plugged and abandoned wells, and geothermal springs, in addition to power plants and their owners.

The reverse side of the map contains a list of California's 299 known geothermal springs, including their location, highest recorded temperature and historical uses.

The maps are available for $3, including shipping and handling, from DOC/ Division of Oil, Gas, and Geothermal Resources offices in Sacramento, Cypress, Ventura, Santa Maria, Bakersfield, Coalinga, El Centro and Santa Rosa. For addresses or phone numbers, call 916-445-9686, or check here on this Web site. 

Also available from DOC's Division of Oil, Gas, and Geothermal Resources is the third edition of the “Energy Map of California.” It shows sedimentary basins, oil and gas fields, major pipelines, geothermal fields and power plants, tanker terminals, offshore platforms, refineries, fossil-fuel electrical generating plants, cogeneration plants, nuclear power plants, hydroelectric plants and areas with wind turbines. Insets detail resources and facilities in the San Francisco Bay Area, greater Los Angeles, and Kern County. The map is available at a cost of $5.

DOC's Division of Oil, Gas, and Geothermal Resources ensures the safe exploration and development of energy resources. It oversees the construction, operation and closure of oil, gas and geothermal wells, an important step in guarding drinking and agricultural waters against pollution.

More than 180,000 oil, gas, and geothermal well records, production and injection statistics, well logs and field maps are available at the division's nine field offices. Some of this information also is available on the DOC/DOGGR Web site.

In addition to regulating oil, natural gas and geothermal wells, the Department of Conservation studies and maps earthquakes and other geologic phenomena; maps and classifies areas containing mineral deposits; ensures reclamation of land used for mining; administers agricultural and open-space land conservation programs; and promotes beverage container recycling.