The Volta Powerhouses are hydroelectric generation plants located in southern Shasta County, California

Shasta County, California

Shasta County is a county located in the northern portion of the U.S. state of California. The county occupies the northern reaches of the Sacramento Valley, with portions extending into the southern reaches of the Cascade Range. As of the 2010 census, the population was 177,223, up from 163,256...

, between Shingletown

Shingletown, California

Shingletown is a census-designated place in Shasta County, California, United States. The population was 2,283 at the 2010 census, up from 2,222 at the 2000 census....

 and Manton

Manton, California

Manton is a census-designated place in Tehama County, California, United States. The population was 347 at the 2010 census, down from 372 at the 2000 census....

. Volta Powerhouse I 40°27′33"N 121°51′56"W was built in 1901 by Keswick Electric Power Company; Volta Powerhouse II was built in 1980http://www.delta.dfg.ca.gov/afrp/documents/BCWC_Strategy.pdf. Manton locals claim that Volta Powerhouse I is the oldest operational hydro-electric generation plant in California.