Canyondam is a census-designated place in Plumas County, United States. Canyondam is located near the dam that forms Lake Almanor, 6.25 miles east-southeast of Almanor. The population was 31 as of the 2010 census, down from 37 as of the 2000 census. On August 6, 2021, the community was destroyed in the Dixie Fire.