Biological Assessment

Black Eagle 100kV Line and Substation Replacement Project

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Black_Eagle_dam from southshore

Black Eagle, Montana
The Black Eagle hydroelectric facility generates approximately 21 megawatts and is a run-of-the-river project owned and operated by NorthWestern Energy. The Black Eagle Project required the replacement of an existing, but aging 100kV-radial line and wooden H-frame structures.

Great Falls 100kV Generation Interconnection Replacement Project

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Great Falls Transmission Line Replacement Project

Great Falls, Montana
PPL Montana’s $55-million Great Falls 100kV Generation Interconnection Replacement Project included the replacement of aging 100kV lines and wooden H-frame structures along a 10-mile corridor and supporting infrastructure.

Thompson Falls Upstream Fish Passage Project

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TFalls Fish Ladder

Thompson Falls, Montana
Thompson Falls Dam was built in 1913 and as with many hydropower facilities at this time fish passage was not a component of construction.