Oldest Dams in Alaska
Alaska has 96 dams with recorded construction dates. The oldest dates to 1905 — 121 years ago. Older dams require particular attention for safety, as many were built before modern engineering standards.
| # | Dam | County | Year Built | Age | Height (ft) | Hazard | Condition |
|---|---|---|---|---|---|---|---|
| 1 | Lower Dewey | Municipality of Skagway | 1905 | 121 yrs | 28 | Low | Satisfactory |
| 2 | Dewey Forebay | Municipality of Skagway | 1905 | 121 yrs | 30 | Low | Satisfactory |
| 3 | Salmon Creek | City and Borough of Juneau | 1914 | 112 yrs | 175 | High | Satisfactory |
| 4 | Alitak Cannery Dam #1 | Kodiak Island Borough | 1917 | 109 yrs | 9 | High | Poor |
| 5 | Lake Osprey Dam | City and Borough of Sitka | 1919 | 107 yrs | 8 | Low | Not Rated |
| 6 | Whitman Lake | Ketchikan Gateway Borough | 1927 | 99 yrs | 39 | High | Satisfactory |
| 7 | Ward Cove Cannery Dam | Ketchikan Gateway Borough | 1932 | 94 yrs | 27 | Low | Not Rated |
| 8 | Douglas Island Dam | City and Borough of Juneau | 1937 | 89 yrs | 26 | High | Fair |
| 9 | Hydaburg Dam | Prince of Wales-Hyder Census Area | 1939 | 87 yrs | 8 | Significant | Not Rated |
| 10 | New England Fish Co Dam | Aleutians East Borough | 1940 | 86 yrs | 10 | Low | Not Rated |
| 11 | Bonnie Rose Lake Dam | Aleutians West Census Area | 1943 | 83 yrs | 15 | Significant | Not Rated |
| 12 | Lake Leone Dam | Aleutians West Census Area | 1945 | 81 yrs | 9 | Significant | Not Rated |
| 13 | North Lake West Dam | Aleutians West Census Area | 1945 | 81 yrs | 10 | Significant | Not Rated |
| 14 | Lowell Creek | Kenai Peninsula Borough | 1945 | 81 yrs | 34 | High | Not Rated |
| 15 | Hess Creek Dam | Yukon-Koyukuk Census Area | 1946 | 80 yrs | 56 | Significant | Unsatisfactory |
| 16 | Chignik | Lake and Peninsula Borough | 1947 | 79 yrs | 17 | Low | Satisfactory |
| 17 | Petersburg Upper Dam | Petersburg Borough | 1950 | 76 yrs | 27 | Significant | Fair |
| 18 | Lake Demarie Dam | Aleutians West Census Area | 1951 | 75 yrs | 19 | Significant | Not Rated |
| 19 | Seldovia Upper Dam | Kenai Peninsula Borough | 1953 | 73 yrs | 25 | Low | Poor |
| 20 | Lake Connell | Ketchikan Gateway Borough | 1953 | 73 yrs | 96 | High | Satisfactory |
| 21 | Lower Silvis | Ketchikan Gateway Borough | 1954 | 72 yrs | 32 | Low | Satisfactory |
| 22 | Chiniak Satellite Tracking Sta. Dam | Kodiak Island Borough | 1954 | 72 yrs | 10 | Low | Not Rated |
| 23 | Ship Creek Dam | Municipality of Anchorage | 1954 | 72 yrs | 50 | High | Fair |
| 24 | Crystal Lake | Petersburg Borough | 1955 | 71 yrs | 43 | High | Satisfactory |
| 25 | Ketchikan Lakes | Ketchikan Gateway Borough | 1957 | 69 yrs | 34 | High | Satisfactory |
| 26 | Campbell Lake Dam | Municipality of Anchorage | 1957 | 69 yrs | 11 | Low | Fair |
| 27 | Cooper Lake | Kenai Peninsula Borough | 1959 | 67 yrs | 52 | High | Satisfactory |
| 28 | Fawn Lake Dam North | Ketchikan Gateway Borough | 1959 | 67 yrs | 15 | Significant | Satisfactory |
| 29 | Lower Fire Lake Dam | Municipality of Anchorage | 1960 | 66 yrs | 13 | High | Fair |
| 30 | Blue Lake | City and Borough of Sitka | 1961 | 65 yrs | 294 | High | Satisfactory |
| 31 | Stover Dam | Kodiak Island Borough | 1962 | 64 yrs | 11 | Low | Not Rated |
| 32 | Big Kitoi | Kodiak Island Borough | 1962 | 64 yrs | 9 | Low | Not Rated |
| 33 | Alitak Cannery Dam #3 | Kodiak Island Borough | 1964 | 62 yrs | 8 | Low | Not Rated |
| 34 | Alitak Cannery Dam #4 | Kodiak Island Borough | 1964 | 62 yrs | 12 | Low | Not Rated |
| 35 | Alitak Cannery Dam #2 | Kodiak Island Borough | 1964 | 62 yrs | 18 | Low | Poor |
| 36 | Itasigrook | North Slope Borough | 1964 | 62 yrs | 13 | Significant | Satisfactory |
| 37 | Eklutna Dam | Municipality of Anchorage | 1965 | 61 yrs | 56 | High | Satisfactory |
| 38 | Wrangell Upper | City and Borough of Wrangell | 1967 | 59 yrs | 28 | High | Poor |
| 39 | Annex Creek | City and Borough of Juneau | 1968 | 58 yrs | 20 | Low | Satisfactory |
| 40 | Wrangell Lower | City and Borough of Wrangell | 1968 | 58 yrs | 28 | High | Poor |
| 41 | Shotter Creek Upper Dam | Hoonah-Angoon Census Area | 1968 | 58 yrs | 9 | Significant | Fair |
| 42 | Upper Silvis | Ketchikan Gateway Borough | 1968 | 58 yrs | 60 | Low | Satisfactory |
| 43 | Bettinger Upper Reservoir Dam | Kodiak Island Borough | 1968 | 58 yrs | 67 | High | Fair |
| 44 | Pillar Creek Dam No.1.b | Kodiak Island Borough | 1968 | 58 yrs | 24 | Significant | Fair |
| 45 | Pillar Creek Dam No. 2.a | Kodiak Island Borough | 1968 | 58 yrs | 17 | Significant | Fair |
| 46 | Pillar Creek Dam No. 2.b | Kodiak Island Borough | 1968 | 58 yrs | 17 | Significant | Fair |
| 47 | Pillar Creek Dam No. 2.c | Kodiak Island Borough | 1968 | 58 yrs | 24 | Significant | Fair |
| 48 | Pillar Creek Dam No.1.a | Kodiak Island Borough | 1969 | 57 yrs | 45 | Significant | Fair |
| 49 | Lake Lucile Dam | Matanuska-Susitna Borough | 1969 | 57 yrs | 6 | Significant | Satisfactory |
| 50 | Adak Log Dam | Aleutians West Census Area | 1970 | 56 yrs | 9 | Low | Poor |