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Columbia River System Operations

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.

Bonneville Dam, Lake Bonneville, and associated facilities are operated for Hydropower, Navigation, Fish & Wildlife, Recreation, and Water Quality.
This congressionally authorized project consists of 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.Located upstream of McNary Lock and Dam and Lake Wallula, Ice Harbor Dam is 2,822 feet long with an effective height of 100 feet. It is a concrete gravity type dam, with an earthfill embankment section at the north abutment. It includes a navigation lock with clear dimensions of 86 by 675 feet. The dam has a 10-bay spillway that is 590 feet long and includes ten 50 foot tainter gates.
CRSO EIS Process Timeline
Little Goose Lock and Dam, near Starbuck, Washington
The John Day Dam spans the Columbia River in the northwestern United States. The dam features a navigation lock with one of the highest lifts, 110 feet, of any U.S. lock. The reservoir impounded by the dam is 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: info@crso.info

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.