The dam blocked the Klamath River to create the Iron Gate Lake Reservoir.

The Iron Gate Fish Hatchery was placed just after the dam, hatching salmon and steelhead that were released back into the river.

[6] On February 25, 2022, the FERC released its final Environmental Impact Statement (EIS) on the dam's removal.

[8][9][10][11] Iron Gate Reservoir was an artificial lake on the Klamath River in Siskiyou County, California, near the Oregon border of the United States.

[14] In 2020, the state released a danger warning about harmful blue-green algae (cyanobacteria) blooms.