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Fourmile Lake (Oregon) facts for kids

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Fourmile Lake
Formile lake, Klamath Co, Oregon.jpg
Fourmile Lake, Southwest shore
Location of Fourmile Lake in Oregon, USA.
Location of Fourmile Lake in Oregon, USA.
Fourmile Lake
Location in Oregon
Location of Fourmile Lake in Oregon, USA.
Location of Fourmile Lake in Oregon, USA.
Fourmile Lake
Location in the United States
Location Klamath County, Oregon
Coordinates 42°27′57″N 122°15′14″W / 42.46583°N 122.25389°W / 42.46583; -122.25389
Type Reservoir
Primary inflows Fourmile Creek
Primary outflows Fourmile Creek
Catchment area 105 square miles (270 km2)
Basin countries United States
Surface area 740 acres (3,000,000 m2)
Max. depth 170 feet (52 m)
Water volume 15,600 acre feet (19,200,000 m3)
Surface elevation 5,748 feet (1,752 m)

Fourmile Lake (or Four Mile Lake) is a reservoir located 5,748 feet (1,752 m) above sea level in Klamath County, Oregon, United States. It is 45 miles (72 km) northeast of Medford. The lake was created when the 25-foot (7.6 m) tall Fourmile Lake Dam was constructed, impounding Fourmile Creek, in the Klamath River watershed. It is located just to the east of Mount McLoughlin, which stands 9,495 feet (2,894 m) above sea level. The lake is bordered by Sky Lakes Wilderness, and is in the Winema National Forest.


In 1898, the Fish Lake Water Company was established to help irrigate the Rogue Valley. The company proposed create Fourmile Lake and enlarge nearby Fish Lake for added water storage. The Fourmile Lake Dam was constructed in 1906, while Fish Lake was completed in 1908. The two lakes were connected in 1915 by the Cascade Canal, taking water from Fourmile Lake over the Cascade Divide to Fish Lake, supplementing Little Butte Creek. In 1955, the dam was repaired, and a new spillway was added.


Fourmile Lake has an average surface area of 740 acres (3,000,000 m2), an average volume of 15,600 acre feet (19,200,000 m3), and a 105-square-mile (270 km2) drainage basin. It has a maximum depth of 170 feet (52 m). Fourmile Lake Dam stands 25 feet (7.6 m) tall and 660 feet (200 m) long.


Rainbow Trout, Kokanee, Brook Trout, and Lake trout are common in the lake. The Bushy-tailed Woodrat and Golden-mantled Ground Squirrel, species of least concern, can be found around the lake.


The Pacific Crest Trail passes by about 2 miles (3.2 km) from Fourmile Lake. The lake is included in the Winema National Forest. The Sky Lakes Wilderness borders the lake, and a trail leads into it. One campground is located near the lake. Popular activities include fishing, swimming, and boating.

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