Hawaii Dams
124 dams tracked by the National Inventory of Dams
Total Dams
124
High Hazard
116
93.5%
Poor / Unsatisfactory
94
Average Age
92 yrs
Hazard Classification
High116 (93.5%)
Significant2 (1.6%)
Low5 (4.0%)
Condition Assessment
Satisfactory0 (0.0%)
Fair28 (22.6%)
Poor / Unsatisfactory94 (75.8%)
Not Rated2 (1.6%)
Federal
2
State
12
Local
23
Private
87
Tallest Dams
- Alexander141 ft
- Puu Lua Reservoir110 ft
- Wahiawa Dam98 ft
- Ku Tree Reservoir90 ft
- Kaneohe Dam83 ft
High Hazard Dams
- AlexanderHigh
- Puu Lua ReservoirHigh
- Wahiawa DamHigh
- Ku Tree ReservoirHigh
- Kaneohe DamHigh
Poor Condition Dams
- Puu Lua ReservoirUnsatisfactory
- Wahiawa DamPoor
- Ku Tree ReservoirUnsatisfactory
- Koolau ReservoirUnsatisfactory
- Horner ReservoirPoor
All Dams in Hawaii
Showing 51–75 of 116
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Maui Reservoir 84 Maui County | 29 | 1918 | High | Poor |
| Maui Reservoir 81 Maui County | 24 | 1920 | High | Poor |
| Maui Reservoir 80 Maui County | 29 | 1917 | High | Fair |
| Maui Reservoir 74 Maui County | 28 | 1916 | High | Poor |
| Maui Reservoir 73 Maui County | 25 | 1908 | High | Poor |
| Maui Reservoir 70 Maui County | 16 | 1917 | High | Poor |
| Maui Reservoir 61 Maui County | 21 | 1917 | High | Poor |
| Maui Reservoir 60 Maui County | 25 | 1917 | High | Poor |
| Maui Reservoir 52 Maui County | 15 | 1917 | High | Poor |
| Maui Reservoir 42 Maui County | 27 | 1917 | High | Poor |
| Maui Reservoir 40 Maui County | 47 | 1926 | High | Fair |
| Maui Reservoir 33 Maui County | 35 | 1910 | High | Poor |
| Maui Reservoir 30 Maui County | 28 | 1917 | High | Poor |
| Maui Reservoir 25 Maui County | 20 | 1917 | High | Poor |
| Maui Reservoir 24 Maui County | 39 | 1917 | High | Poor |
| Maui Reservoir 22 Maui County | 30 | 1917 | High | Fair |
| Maui Reservoir 21 Maui County | 22 | 1913 | High | Poor |
| Maui Reservoir 20 Maui County | 42 | 1913 | High | Poor |
| Maui Reservoir 15 Maui County | 39 | 1917 | High | Poor |
| Maui Reservoir 14 Maui County | 31 | 1913 | High | Unsatisfactory |
| Maui Field 290 Reservoir Maui County | 25 | 1997 | High | Poor |
| Manuhonuhonu Reservoir Kauai County | 45 | 1954 | High | Poor |
| Mana Reservoir Kauai County | 25 | 1905 | High | Unsatisfactory |
| Mahinahina Reservoir Maui County | 34 | 1995 | High | Poor |
| Lower Kapahi Reservoir Kauai County | 24 | 1920 | High | Unsatisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.