Lower Baker Dam

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Lower Baker Dam
Lower baker dam.jpg
Lower Baker Dam from downstream
CountryUnited States
LocationSkagit County, Washington
Coordinates48°32′51″N 121°44′28″W / 48.54750°N 121.74111°W / 48.54750; -121.74111Coordinates: 48°32′51″N 121°44′28″W / 48.54750°N 121.74111°W / 48.54750; -121.74111
StatusIn use
Opening date1925
Owner(s)Puget Sound Energy
Dam and spillways
Type of damConcrete thick-arch
ImpoundsBaker River
Height285 feet (87 m)
Length550 feet (170 m)
Spillway typeUncontrolled overflow
Reservoir
CreatesLake Shannon
Total capacity161,470 acre feet (199,170,000 m3)[1]
Catchment area250 square miles (650 km2)
Surface area2,190 acres (890 ha)
Power Station
Hydraulic head280 feet (85 m)
Installed capacity79 MW
Annual generation344,850,000 KWh[2]

Lower Baker Dam (or simply Baker Dam) is a dam across the Baker River one mile north of Concrete, Washington. It forms a reservoir called Lake Shannon which stretches 7.5 miles (12.1 km) upstream. The dam is operated by Puget Sound Energy as part of the Baker River Hydroelectric Project.[3]

The dam has a thick arch design, and is 285 feet (87 m) high and 550 feet (170 m) long. It spans the Baker River in a narrow reach known as Eden Canyon, just above the river's confluence with the Skagit River. It is able to hold 161,470 acre feet (199,170,000 m3) of water, of which 29,426 acre feet (36,296,000 m3) is reserved for flood control. At full capacity the dam's hydroelectric plant can generate 79 megawatts of power.[4] The other dam on this river, Upper Baker Dam, lies about 8 miles (13 km) upstream, and serves a similar purpose to Lower Baker.

References[edit]

  1. ^ "SKAGIT RIVER BASIN 112193000 LAKE SHANNON AT CONCRETE, WA" (PDF). wa.water.usgs.gov. Retrieved 18 March 2016.
  2. ^ "LOWER BAKER". carma.org. Retrieved 18 March 2016.
  3. ^ "3.3 Water Quantity" (PDF). Baker River Project, FERC No. 2150. Puget Sound Energy. March 2002. Retrieved 2011-01-17.[permanent dead link]
  4. ^ "Fact Sheet" (PDF). Archived from the original (PDF) on 2013-08-23. Retrieved 2013-07-28."Baker River Hydroelectric Project Fact Sheet" (PDF). Archived from the original (PDF) on 2011-11-06.