Halenanahu Reservoir
Hawaii — Kauai County — HALENANHU STREAM
Location
| State | Hawaii |
| County | Kauai |
| River | HALENANHU STREAM |
| Coordinates | 21.96497, -159.43208 |
Physical Characteristics
| NID Height | 40 ft |
| Dam Height | 35 ft |
| Dam Length | 650 ft |
| NID Storage | 460 acre-ft |
| Max Storage | 460 acre-ft |
| Surface Area | 23 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Unsatisfactory |
| EAP Status | Yes |
| Last Inspection | November 6, 2025 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1920 |
| Primary Purpose | Irrigation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Grove Farm Company |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.