Iron Canyon Dam (National ID # CA00417) is a dam in Shasta County, California, United States.
The earthen rockfill dam was constructed in 1965 by the Pacific Gas and Electric Company for hydroelectric power, with a height of and a length of at its crest. It impounds Iron Canyon Creek. The dam is owned and operated by PG&E. The downstream James Black Powerhouse, one of the largest in the company's system, produces 208,000 mechanical horsepower.
The reservoir the dam creates, Iron Canyon Reservoir, is surrounded by the Shasta-Trinity National Forest. It has a water surface of , a shoreline of approximately , and has a capacity of . Recreation includes fishing (for trout), hunting, camping, p and hiking.
Water is diverted from the McCloud River at Lake McCloud about south of Mount Shasta, through a tunnel to Iron Canyon Reservoir, and then through another tunnel to the James B. Black Powerhouse, which outlets into the Pit River on the upper end of Pit Six Reservoir.