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U.S. Army Corps of Engineers
Albeni Falls Dam
2376 E. Highway 2
Oldtown, ID 83822


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Albeni Falls Dam

Albeni Falls DamAlbeni Falls Dam was authorized for construction under the Flood Control Act of 1950. This Act was signed by the United States Congress in response to a great flood that swept over the river valleys of the Columbia basin in 1948. Albeni Falls Dam was built from January 1951 to December of 1955 at a total cost of $34 million.

The dam is made up of two different parts: the powerhouse and the spillway. The powerhouse contains powerful turbines and generators that convert gravity-driven river water into hydroelectricity. The spillway can either store water for downstream power production and irrigation at other dams along the Pend Oreille and Columbia Rivers, or release water for upstream flood control. There is 136,000 cubic yards (61 million pounds) of concrete in the structure.

Today, it produces over 200 million kilowatt hours of electrical energy each year. When running at top capacity, the three Kaplan generators can generate 42.6 megawatts. That's enough power to supply about 15,000 homes. Bonneville Power Administration markets this electricity to customers primarily in the Pacific Northwest. This power production saves the United States from buying about 4.9 million barrels of imported oil each year.

Flow Update

April 25, 2016

Lake Pend Oreille elevation at Hope Gauge: 2,055.06 feet 

Albeni Falls Dam inflow: ~41,000 cubic feet per second

Albeni Falls Dam outflow: 37,000 cfs 

Outflow from Albeni Falls Dam will decrease from 37,000 to 35,000 cfs today starting at 10 a.m. PST.

The operation for April is to gradually fill with an end of April lake elevation of about 2,056 feet as measured at Hope.  Lake Pend Oreille will refill towards the summer operating range of 2,062 to 2,062.5 feet by mid-June depending on hydrologic conditions and flood risk management needs.

Short term modeling forecasts are provided by the Northwest River Forecast Center.  Their projections for Albeni Falls Dam inflow, outflow and the Lake Pend Oreille at the Hope gage can be found here: http://www.nwrfc.noaa.gov/river/station/flowplot/flowplot.cgi?lid=ALFW1

Projections for future operations at Albeni Falls Dam can be found here: http://www.nws.usace.army.mil/About/Offices/Engineering/HydraulicsandHydrology/OperationalProjections.aspx

Page 1 shows Lake Pend Oreille Elevation at the Hope gauge

Page 2 shows Albeni Falls Dam inflow

Page 3 shows Albeni Falls Dam outflow

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