Image Source: USACE Digital Visual Library

General Information

Dam:

Ice Harbor Dam. Snake River. River Mile 9.7

Constructed:

1962 (units 1-3); 1976 (units 4-6)

Owner:

U.S. Army Corps of Engineers, Walla Walla District

Normal Operating Pool¹: 437.0-440.0 feet

Maximum Pool¹: 446.0 feet

Powerhouse Capacity:

Nameplate capacity: 3 @ 90 MW, 3 @ 111 MW, 603 MW total

Overload capacity: 3 @ 103.5 MW, 3 @ 127.5 MW, 693 MW total

Hydraulic capacity: 106 kcfs

Spillway²:

590 feet, 10 gates

¹ From USACE Walla Walla District, Appendix G - Hydroregulations, FR/EIS.
² From USACE Walla Walla District, Project Data Sheet.

Additional Information

Ice Harbor Dam web page. Contact U.S. Army Corps of Engineers, Walla Walla District for all additional information.