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 35
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Ward Cove Cannery Dam Ketchikan Gateway Borough County | 27 | 1932 | Low | Not Rated |
| Upper Silvis Ketchikan Gateway Borough County | 60 | 1968 | Low | Satisfactory |
| Two Bull Ridge Pond T5 Dam Denali Borough County | 49 | 2000 | Low | Fair |
| Terror Lake Kodiak Island Borough County | 193 | 1984 | Low | Satisfactory |
| Stover Dam Kodiak Island Borough County | 11 | 1962 | Low | Not Rated |
| Shotgun Creek Div Kodiak Island Borough County | 40 | 1984 | Low | Satisfactory |
| Sherwood Estates Dam Matanuska-Susitna Borough County | 20 | 1975 | Low | Not Rated |
| Seldovia Upper Dam Kenai Peninsula Borough County | 25 | 1953 | Low | Poor |
| Sand Pit Dam City and Borough of Juneau County | 33 | 2016 | Low | Fair |
| Red Dog Mine Water Diversion Dam Northwest Arctic Borough County | 34 | 1991 | Low | Fair |
| New England Fish CO Dam Aleutians East Borough County | 10 | 1940 | Low | Not Rated |
| Mahoona Dam Kodiak Island Borough County | 13 | 1986 | Low | Unsatisfactory |
| Lower Silvis Ketchikan Gateway Borough County | 32 | 1954 | Low | Satisfactory |
| Lower Dewey Municipality of Skagway County | 28 | 1905 | Low | Satisfactory |
| Long Lake Dam City and Borough of Juneau County | 30 | 1973 | Low | Fair |
| Lake Osprey Dam City and Borough of Sitka County | 8 | 1919 | Low | Not Rated |
| Icy Lake Dam Aleutians West Census Area County | 7 | 1995 | Low | Not Rated |
| Gregory Lake Municipality of Anchorage County | 16 | — | Low | Not Available |
| Fort Knox Water Dam Fairbanks North Star Borough County | 70 | 1995 | Low | Satisfactory |
| Eyak Lake Chugach Census Area County | 15 | 1972 | Low | Not Rated |
| Dewey Forebay Municipality of Skagway County | 30 | 1905 | Low | Satisfactory |
| C. P. P. Dam Matanuska-Susitna Borough County | 7 | — | Low | Satisfactory |
| Chiniak Satellite Tracking Sta. Dam Kodiak Island Borough County | 10 | 1954 | Low | Not Rated |
| Chignik Lake and Peninsula Borough County | 17 | 1947 | Low | Satisfactory |
| Campbell Lake Dam Municipality of Anchorage County | 11 | 1957 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.