List of Dams in The Columbia River Watershed

Snake River

Name	Height	Purpose(s)	Capacity (MW)	Year	Owner name	Reservoir name	Comments
Ice Harbor	208 ft (63.4 m)	Navigation, hydroelectric	693	1962	USACE	Lake Sacajawea
Lower Monumental	100 ft (30.5 m)	Navigation, hydroelectric	932	1969	USACE	Lake Herbert G. West
Little Goose	98 ft (29.9 m)	Navigation, hydroelectric	932	1970	USACE	Lake Bryan
Lower Granite	100 ft (30.5 m)	Navigation, hydroelectric	932	1972	USACE	Lower Granite Lake
Hells Canyon	330 ft (101 m)	Hydroelectric	391	1967	Idaho Power Company	Hells Canyon Reservoir	No fish passage.
Oxbow	175 ft (53.3 m)	Hydroelectric	190	1961	Idaho Power Company	Oxbow Reservoir
Brownlee	420 ft (128 m)	Hydroelectric	585.4	1958	Idaho Power Company	Brownlee Reservoir
Swan Falls	107 ft (32.6 m)	Hydroelectric		1901	Idaho Power Company
C. J. Strike	115 ft (35.1 m)	Hydroelectric	82.8	1952	Idaho Power Company	C. J. Strike Reservoir
Bliss	70 ft (21.3 m)	Hydroelectric		1950	Idaho Power Company		Mid-Snake Project.
Milner	73 ft (22.3 m)	Irrigation, hydroelectric		1905	Milner Dam, Inc.	Milner Lake
Minidoka	86 ft (26.2 m)	Irrigation, hydroelectric	27.7	1906	Bureau of Reclamation	Lake Walcott	Minidoka Project.
American Falls	103.5 ft (31.5 m)	Irrigation, hydroelectric	112	1927, replaced 1978	Bureau of Reclamation	American Falls Reservoir	Minidoka Project.
Gem State	40 ft (12.2 m)	Hydroelectric, irrigation	24	1988	City of Idaho Falls
Palisades	270 ft (82 m)	Irrigation, Hydroelectric	176.6	1957	Bureau of Reclamation	Palisades Reservoir	Palisades Project
Jackson Lake	65 ft (19.8 m)	Irrigation	N/A	1916, upgraded 1989	Bureau of Reclamation	Jackson Lake	Minidoka Project.
Total			4,942.6