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Detroit Lake
Green Bridge over Detroit Lake.JPG
Green Bridge over Detroit Lake
Location Linn / Marion counties, Oregon,
United States
Lake type Reservoir
Primary inflows North Santiam and Breitenbush Rivers
Primary outflows North Santiam River
Basin countries United States
Max. length 9 mi (14.4 km)
Max. width 1 mi (1.6 km)
Surface area 3,500 acres (1,400 ha)
Average depth 121 ft (37 m)
Max. depth 440 ft (130 m)
Water volume 455,000 acre⋅ft (0.561 km3) full, 347 million m³ in summer.
Shore length1 32 mi (51.4 km)
Surface elevation 1,565 ft (477 m)
Islands Piety Knob
Settlements Detroit, Oregon
1 Shore length is not a well-defined measure.

Detroit Lake is a reservoir impounded by the Detroit Dam on the North Santiam River 46 miles (74 km) southeast of Salem, Oregon, United States. The lake is adjacent to Oregon Route 22 near the city of Detroit. This mesotrophic lake stores water for use by the city of Salem and other nearby communities.

History

DETROIT LAKE AT SHOWN AT AN ALLTIME LOW IN THE FALL OF 1973 DUE TO INFREQUENT SNOWFALL AND RAIN THE YEAR BEFORE. LACK... - NARA - 555387
Detroit Lake water level low in September 1973.

Detroit Lake is situated over a historical road bed of the former Oregon Pacific Railroad. This route was built by Colonel T. Egenton Hogg as a proposed transcontinental railroad. Because of a lack of funding, the line terminated in Idanha, southeast of the lake. Idanha had rail service until the 1950s, when the track was removed for installation of the Detroit and Big Cliff reservoirs. Detroit Lake was created in 1953 after the completion of the dam. Part of the Willamette Valley Projects, the lake was intended primarily for flood control and power generation but has become one of the major recreation resources in western Oregon.

Details

USACE Detroit Dam Oregon
Detroit Dam, impounding Detroit Lake.

The reservoir has a capacity of 455,000 acre feet (561,000,000 m3) of water when full and 281,600 acre feet (347,300,000 m3) in the summer when drawn down. Located in the North Santiam Canyon, the 9-mile (14 km) long lake has shoreline of 32 miles (51 km) when full. One swimming opportunity is at the Mongold Day-Use Area (an Oregon State Park). Detroit Lake is stocked by the Oregon Department of Fish and Wildlife with 125,000 catchable rainbow trout along with fingerling rainbow, kokanee and chinook salmon. A self-sustaining population of brown bullhead catfish resides in the lake.

Detroit Lake offers year-round fishing as long as you fish in still water and not in or near the rivers and streams. It is one of 32 lakes federally designated for recreation, managed by the United States Forest Service. The lake serves many purposes including flood control, water conservation, and recreation.

There are many camping and recreation opportunities at Detroit Lake. In 2009, a new winter boat ramp was constructed, making it possible to launch a boat safely during the winter months when other ramps are on dry ground.

Water Levels

Detroit Lake August 2015
Detroit Lake August 2015
Detroit Lake Marina - Before and After
Detroit Lake Marina - Before and After

The water level fluctuates with snow pack, precipitation, and the water consumption of Salem, and surrounding areas. At low pool, it has a surface elevation of 1,450 feet (440 m); at the full pool season—typically May 1 to September 1—it can raise up 119 feet (36 m) to a water elevation of 1,569 feet (478 m).

In 2015 and 2016 low water levels in the reservoir impacted recreation, the operation of marinas and the economy in the Santiam Canyon.

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