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 76–100 of 124
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| 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 |
| Ku Tree Reservoir Honolulu County | 90 | 1925 | High | Unsatisfactory |
| Kumano Reservoir Kauai County | 48 | 1902 | High | Poor |
| Kualapuu Reservoir Maui County | 58 | 1969 | High | Fair |
| Koolau Reservoir Honolulu County | 70 | 1919 | Low | Unsatisfactory |
| Kepani Reservoir Kauai County | 40 | 1954 | High | Poor |
| Kemoo 5 Reservoir Honolulu County | 25 | 1920 | High | Poor |
| Kehalani Offsite Retention Basin Maui County | 30 | 2003 | High | Poor |
| Keaiwa Reservoir Hawaii County | 32 | 1920 | Low | Unsatisfactory |
| Kaupale Reservoir Kauai County | 50 | 1910 | High | Poor |
| Kauai Lagoons Kauai County | 13 | 1987 | High | Fair |
| Kapa Reservoir Kauai County | 24 | 1901 | High | Poor |
| Kapaia Reservoir Kauai County | 53 | 1910 | High | Poor |
| Kaopala Basin Maui County | 30 | 1998 | High | Fair |
| Kaneohe Dam Honolulu County | 83 | 1980 | High | Fair |
| Kaneha Reservoir Kauai County | 51 | 1910 | High | Poor |
| Kaloko Reservoir Kauai County | 46 | 1890 | High | Poor |
| Kalihiwai Reservoir Kauai County | 25 | 1920 | High | Poor |
| Kaili Ili Reservoir Maui County | 25 | 1984 | High | Fair |
| Kahoma Reservoir Maui County | 60 | 1918 | High | Poor |
| Kahana Nui Dam Maui County | 58 | 1984 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.