Hydroelectric Dams in Alaska

Alaska has 28 hydroelectric dams, of which 9 carry a high hazard classification. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity.

#DamCountyHeight (ft)HazardConditionYear
1Blue LakeCity and Borough of Sitka294HighSatisfactory1961
2Green LakeCity and Borough of Sitka210SignificantSatisfactory1982
3Terror LakeKodiak Island Borough193LowSatisfactory1984
4Salmon CreekCity and Borough of Juneau175HighSatisfactory1914
5Swan LakeKetchikan Gateway Borough174HighSatisfactory1984
6Bradley Lake DamKenai Peninsula Borough125LowSatisfactory1991
7Upper SilvisKetchikan Gateway Borough60LowSatisfactory1968
8Eklutna DamMunicipality of Anchorage56HighSatisfactory1965
9Solomon Gulch SpillwayChugach Census Area55HighSatisfactory1981
10Cooper LakeKenai Peninsula Borough52HighSatisfactory1959
11Crystal LakePetersburg Borough43HighSatisfactory1955
12Shotgun Creek DivKodiak Island Borough40LowSatisfactory1984
13Whitman LakeKetchikan Gateway Borough39HighSatisfactory1927
14Ketchikan LakesKetchikan Gateway Borough34HighSatisfactory1957
15Lower SilvisKetchikan Gateway Borough32LowSatisfactory1954
16Bart Lake DamCity and Borough of Juneau31LowSatisfactory2009
17Long Lake DamCity and Borough of Juneau30LowFair1973
18Dewey ForebayMunicipality of Skagway30LowSatisfactory1905
19Lower DeweyMunicipality of Skagway28LowSatisfactory1905
20Akutan Hydro DamAleutians East Borough21SignificantFair1993
21Annex CreekCity and Borough of Juneau20LowSatisfactory1968
22ChignikLake and Peninsula Borough17LowSatisfactory1947
23Fawn Lake Dam NorthKetchikan Gateway Borough15SignificantSatisfactory1959
24Mahoona DamKodiak Island Borough13LowUnsatisfactory1986
25Bluff Lake DiversionKetchikan Gateway Borough10LowNot Rated1984
26Shotter Creek Upper DamHoonah-Angoon Census Area9SignificantFair1968
27Roycroft LakeKenai Peninsula Borough7SignificantNot Rated1979
28Chuniixsax Hydro DamAleutians West Census Area0SignificantNot Rated

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