List of dams and reservoirs in Idaho

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Anderson Ranch Dam, the 2nd highest dam in Idaho

This is a list of dams and reservoirs in the U.S. state of Idaho.

Key
daggerLocated on state border S=State of Idaho USACE=U.S. Army Corps of Engineers USBR=U.S. Bureau of Reclamation
Name River Type Height Reservoir Capacity Capacity
(MW)
Owner Built
Ft m acre.ft km3
Albeni Falls Dam Pend Oreille River Concrete gravity 90 27 Lake Pend Oreille 1,153,000 1.422 ? USACE 1955
Alexander Dam Bear River Concrete gravity 94 29 Alexander Reservoir 15,760 0.01944 14 PacifiCorp 1925
American Falls Dam Snake River Concrete gravity 94 29 American Falls Reservoir 1,671,300 2.0615 112 USBR 1978
Anderson Ranch Dam South Fork Boise River Earthfill 456 139 Anderson Ranch Reservoir 503,500 0.6211 40 USBR 1950
Black Canyon Diversion Dam Payette River Concrete gravity 183 56 Black Canyon Reservoir 31,200 0.0385 10 USBR 1924
Arrowrock Dam Boise River Concrete arch 350 110 Arrowrock Reservoir 300,850 0.37109 0 USBR 1915
Blackfoot Dam Blackfoot River Earthfill 55 17 Blackfoot Reservoir 417,000 0.514 0 Idaho Bureau of Indian Affairs 1911
Bliss Dam Snake River Concrete gravity 70 21 Bliss Reservoir 11,000 0.014 75 Idaho Power 1950
Brownlee Damdagger Snake River Earthfill 420 130 Brownlee Reservoir 1,426,700 1.7598 585.4 Idaho Power 1958
C. J. Strike Dam Snake River Earthfill 115 35 C. J. Strike Reservoir 247,000 0.305 82.8 Idaho Power 1952
Cabinet Gorge Dam Clark Fork Concrete arch 111 34 Cabinet Gorge Reservoir 106,000 0.131 231 Avista Utilities 1953
Cascade Dam North Fork Payette River Earthfill 107 33 Lake Cascade 693,100 0.8549 12.4 USBR 1948
Cedar Creek Dam Cedar Creek Earthfill 84 26 Cedar Creek Reservoir 30,000 0.037 0 Cedar Mesa Canal & Reservoir Co. 1920
Crane Creek Dam Crane Creek Earthfill 55 17 Crane Creek Reservoir 56,800 0.0701 ? Crane Creek Reservoir Administrative Board 1912
Deadwood Dam Deadwood River Concrete arch 165 50 Deadwood Reservoir 154,000 0.190 0 USBR 1931
Dworshak Dam North Fork Clearwater River Concrete gravity 717 219 Dworshak Reservoir 3,468,000 4.278 460 USACE 1973
Fish Creek Dam Fish Creek Concrete multiple arch 88 27 Fish Creek Reservoir 12,743 0.015718 0 Carey Valley Reservoir Co. 1923
Hells Canyon Damdagger Snake River Concrete gravity 330 100 Hells Canyon Reservoir 188,000 0.232 391 Idaho Power 1967
Island Park Dam Henrys Fork Earthfill 94 29 Island Park Reservoir 135,205 0.166773 0 USBR 1939
Little Camas Dam Little Camas Creek Earthfill 44 13 Little Camas Reservoir 18,400 0.0227 0 Mountain Home Irrigation District 1912
Little Wood River Dam Little Wood River Earthfill 169 52 Little Wood River Reservoir 33,300 0.0411 3 USBR 1939
Lucky Peak Dam Boise River Earthfill 340 100 Lucky Peak Lake 307,000 0.379 101 USACE 1955
Mackay Dam Big Lost River Earthfill 67 20 Mackay Reservoir 45,000 0.056 0 Big Lost River Irrigation District 1918
Magic Dam Big Wood River Earthfill 128 39 Magic Reservoir 195,000 0.241 9 Magic Reservoir Hydroelectric, Inc. 1910
Milner Dam Snake River Rockfill 73 22 Milner Lake 36,300 0.0448 58.3 Milner Dam, Inc. 1905
Minidoka Dam Snake River Earthfill/concrete 86 26 Lake Walcott 210,200 0.2593 28 USBR 1906
Mormon Dam McKinney Creek Earthfill 23 7.0 Mormon Reservoir 19,280 0.02378 0 Twin Lakes Reservoir & Irrigation Co. 1908
Oakley Dam Goose Creek Earthfill 139 42 Lower Goose Creek Reservoir 76,000 0.094 0 Oakley Canal Co. 1916
Oneida Dam Bear River Concrete gravity 102 31 Oneida Narrows Reservoir 11,400 0.0141 30 PacifiCorp 1913
Paddock Valley Dam Little Willow Creek Earthfill 43 13 Paddock Valley Reservoir 36,400 0.0449 0 Little Willow Irrigation District 1949
Ririe Dam Willow Creek Earthfill 253 77 Ririe Reservoir 100,500 0.1240 0 USBR 1977
Oxbow Damdagger Snake River Rockfill 175 53 Oxbow Reservoir 58,200 0.0718 190 Idaho Power 1961
Palisades Dam Snake River Earthfill 270 82 Palisades Reservoir 1,200,000 1.5 176.5 USBR 1957
Post Falls Dam Spokane River Concrete gravity 57.8 17.6 Coeur d'Alene Lake 225,000 0.278 14.75 Avista Utilities 1906
Priest Lake Dam Priest River Concrete gravity 8 2.4 Priest Lake 143,000 0.176 ? Idaho Department of Water Resources 1978
Sage Hen Dam Sage Hen Creek Earthfill 38 12 Sage Hen Reservoir 5,210 0.00643 0 Squaw Creek Irrigation Company 1938
Salmon Falls Dam Salmon Falls Creek Concrete arch 217 66 Salmon Falls Creek Reservoir 230,650 0.28450 0 Salmon River Canal Co. 1911

See also[edit]