Fish Lake is a reservoir located 4,639 feet (1,414 m) above sea level in Jackson County, Oregon, United States.

Fish Lake is located between two volcanoes: Mount McLoughlin to the north and Brown Mountain to the south.

Two-thousand-year-old andesite lava flows erupted from Brown Mountain surround Fish Lake's southern shore.

[5][6] In 1898, the Fish Lake Water Company was established to help irrigate the Rogue Valley.

[5] The Pacific Crest Trail passes by Fish Lake's eastern shore.