Merwin Dam

Merwin Dam
Merwin Dam
Location Clark / Cowlitz counties, Washington, USA
Coordinates 45°57′24″N 122°33′18″W / 45.95667°N 122.555°W / 45.95667; -122.555Coordinates: 45°57′24″N 122°33′18″W / 45.95667°N 122.555°W / 45.95667; -122.555[1]
Opening date 1931[2]
Dam and spillways
Height 313 feet (95 m)
Length 1,250 feet (381 m)[2]
Impounds Lewis River
Reservoir
Creates Lake Merwin
Capacity 422,000 acre feet (0.521 km3)[2]
Catchment area 731 square miles (1,890 km2)[2]
Surface area 3,921 acres (15.9 km2)[2]

Merwin Dam (also known as Ariel Dam[1]) is a concrete arch gravity-type hydroelectric dam on the Lewis River, in the U.S. state of Washington. It is located on the border between Cowlitz County and Clark County. Its reservoir is called Lake Merwin.

References

  1. ^ a b U.S. Geological Survey Geographic Names Information System: Merwin Dam
  2. ^ a b c d e Merwin Dam, NPDP Dam Directory

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