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 1–25 of 43
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Akutan Hydro Dam Aleutians East Borough County | 21 | 1993 | Significant | Fair |
| Beluga Lake Dam Kenai Peninsula Borough County | 13 | — | Significant | Not Rated |
| Bonnie Rose Lake Dam Aleutians West Census Area County | 15 | 1943 | Significant | Not Rated |
| Cabin Creek Dam Petersburg Borough County | 38 | 1996 | Significant | Fair |
| Cannery Creek Dam Chugach Census Area County | 17 | 1979 | Significant | Fair |
| Caswell Lakes Road Embankment Matanuska-Susitna Borough County | 14 | — | Significant | Poor |
| Chuniixsax Hydro Dam Aleutians West Census Area County | — | — | Significant | Not Rated |
| Cremo Lake Dam Municipality of Anchorage County | 6 | — | Significant | Fair |
| 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 |
| 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 |
| 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 |
| Isatkuag Lagoon Dam North Slope Borough County | 16 | 1977 | Significant | Fair |
| Itasigrook North Slope Borough County | 13 | 1964 | Significant | Satisfactory |
| Kotzebue Water Supply Dam Northwest Arctic Borough County | 16 | 1970 | Significant | Unsatisfactory |
| Kwethluk Wastewater Lagoon Dam Bethel Census Area County | 13 | — | Significant | Not Rated |
| Lake Demarie Dam Aleutians West Census Area County | 19 | 1951 | Significant | Not Rated |
| Lake Leone Dam Aleutians West Census Area County | 9 | 1945 | Significant | Not Rated |
| Lake Lucile Dam Matanuska-Susitna Borough County | 6 | 1969 | Significant | Satisfactory |
| Lot D9 Dam | 26 | — | Significant | Not Rated |
| Lower Slate Lake Tailings Dam City and Borough of Juneau County | 63 | 2010 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.