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CRSO Environmental Impact Statement

The U.S. Army Corps of Engineers, Bureau of Reclamation, and Bonneville Power Administration, as co-lead agencies, are preparing an environmental impact statement (EIS) in accordance with the National Environmental Policy Act on the operations, maintenance and configurations for 14 federal projects in the Columbia River System in the interior Columbia River Basin.

In this Columbia River System Operations EIS, the three co-lead agencies will present a range of reasonable alternatives for long-term system operations and evaluate the potential environmental and socioeconomic impacts on flood risk management, irrigation, power generation, navigation, fish and wildlife conservation, cultural resources, water quality and recreation.

Adult fish passage facilities include one ladder with entrances on both shores and a fish channel through the spillway, which connects to the powerhouse fish collection system and south shore ladder.
Bonneville Dam, Lake Bonneville, and associated facilities are operated for Hydropower, Navigation, Fish & Wildlife, Recreation, and Water Quality.
Ice Harbor Dam, powerhouse, navigation lock, two fish ladders, a removable spillway weir and a juvenile fish bypass facility. It provides navigation, hydroelectric generation, recreation and incidental irrigation.
A memorandum from the President directs the co-lead agencies to complete the CRSO EIS and associated biological opinion by 2020.
Little Goose Lock and Dam, near Starbuck, Washington
John Day Dam spans the Columbia River in the northwestern U.S. Its navigation lock has one of the highest lifts, 110 feet, of any U.S. lock. The dam creates Lake Umatilla and is part of the Columbia River Basin system of dams. It's 16 generators produce 135 megawatts of power each.

Contact Us

U.S. Army Corps of Engineers

Attn: CRSO EIS, P.O. Box 2870
Portland, OR 97208-2870
P: (800) 290-5033
Email for inquiries:

EIS Co-lead Agencies

The U.S. Army Corps of Engineers, Bureau of Reclamation, and  Bonneville Power Administration operate, maintain, and transmit hydroelectric power from 14 federal multiple purpose dams and related facilities located throughout the Columbia River basin.