Alaska Dams
107 dams tracked by the National Inventory of Dams
Total Dams
107
High Hazard
29
27.1%
Poor / Unsatisfactory
11
Average Age
57 yrs
Hazard Classification
Condition Assessment
Federal
5
State
6
Local
45
Private
43
Tallest Dams
- Fort Knox Tailings Dam350 ft
- Blue Lake294 ft
- Green Lake210 ft
- Red Dog Tailings Main Dam208 ft
- Terror Lake193 ft
High Hazard Dams
- Blue LakeHigh
- Red Dog Tailings Main DamHigh
- Salmon CreekHigh
- Swan LakeHigh
- Solomon GulchHigh
Poor Condition Dams
- Hess Creek DamUnsatisfactory
- Wrangell LowerPoor
- Wrangell UpperPoor
- Seldovia Upper DamPoor
- Alitak Cannery Dam #2Poor
All Dams in Alaska
Showing 26–50 of 107
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Chuniixsax Hydro Dam Aleutians West Census Area County | — | — | Significant | Not Rated |
| Cooper Lake Kenai Peninsula Borough County | 52 | 1959 | High | Satisfactory |
| C. P. P. Dam Matanuska-Susitna Borough County | 7 | — | Low | Satisfactory |
| Cremo Lake Dam Municipality of Anchorage County | 6 | — | Significant | Fair |
| Crystal Lake Petersburg Borough County | 43 | 1955 | High | Satisfactory |
| Dewey Forebay Municipality of Skagway County | 30 | 1905 | Low | Satisfactory |
| Douglas Island Dam City and Borough of Juneau County | 26 | 1937 | High | Fair |
| Eklutna Dam Municipality of Anchorage County | 56 | 1965 | High | Satisfactory |
| Explorer Glacier Pond Dam Municipality of Anchorage County | 7 | 1989 | High | Poor |
| Eyak Lake Chugach Census Area County | 15 | 1972 | Low | Not Rated |
| Fawn Lake Dam North Ketchikan Gateway Borough County | 15 | 1959 | Significant | Satisfactory |
| Fort Knox Tailings Dam Fairbanks North Star Borough County | 350 | 1996 | Significant | Fair |
| Fort Knox Water Dam Fairbanks North Star Borough County | 70 | 1995 | Low | Satisfactory |
| Grant Mine Tailings Dam Fairbanks North Star Borough County | 30 | 1987 | Significant | Not Rated |
| Green Lake City and Borough of Sitka County | 210 | 1982 | Significant | Satisfactory |
| Gregory Lake Municipality of Anchorage County | 16 | — | Low | Not Available |
| Hess Creek Dam Yukon-Koyukuk Census Area County | 56 | 1946 | Significant | Unsatisfactory |
| Humboldt Creek Reservoir Dam Aleutians East Borough County | 19 | — | Significant | Not Rated |
| Hydaburg Dam Prince of Wales-Hyder Census Area County | 8 | 1939 | Significant | Not Rated |
| Icy Creek Reservoir Dam Aleutians West Census Area County | 24 | 1993 | Significant | Satisfactory |
| Icy Lake Dam Aleutians West Census Area County | 7 | 1995 | Low | Not Rated |
| Isatkuag Lagoon Dam North Slope Borough County | 16 | 1977 | Significant | Fair |
| Itasigrook North Slope Borough County | 13 | 1964 | Significant | Satisfactory |
| Ketchikan Lakes Ketchikan Gateway Borough County | 34 | 1957 | High | Satisfactory |
| Kotzebue Water Supply Dam Northwest Arctic Borough County | 16 | 1970 | Significant | Unsatisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.