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
High29 (27.1%)
Significant43 (40.2%)
Low35 (32.7%)
Condition Assessment
Satisfactory40 (37.4%)
Fair27 (25.2%)
Poor / Unsatisfactory11 (10.3%)
Not Rated29 (27.1%)
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 26–35 of 35
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Red Dog Mine Water Diversion Dam Northwest Arctic Borough County | 34 | 1991 | Low | Fair |
| Sand Pit Dam City and Borough of Juneau County | 33 | 2016 | Low | Fair |
| Seldovia Upper Dam Kenai Peninsula Borough County | 25 | 1953 | Low | Poor |
| Sherwood Estates Dam Matanuska-Susitna Borough County | 20 | 1975 | Low | Not Rated |
| Shotgun Creek Div Kodiak Island Borough County | 40 | 1984 | Low | Satisfactory |
| Stover Dam Kodiak Island Borough County | 11 | 1962 | Low | Not Rated |
| Terror Lake Kodiak Island Borough County | 193 | 1984 | Low | Satisfactory |
| Two Bull Ridge Pond T5 Dam Denali Borough County | 49 | 2000 | Low | Fair |
| Upper Silvis Ketchikan Gateway Borough County | 60 | 1968 | Low | Satisfactory |
| Ward Cove Cannery Dam Ketchikan Gateway Borough County | 27 | 1932 | Low | Not Rated |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.