Mahinahina Reservoir
Hawaii — Maui County
Location
| State | Hawaii |
| County | Maui |
| Coordinates | 20.94905, -156.65725 |
Physical Characteristics
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 630 ft |
| NID Storage | 73 acre-ft |
| Max Storage | 73 acre-ft |
| Surface Area | 5 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Poor |
| EAP Status | Yes |
| Last Inspection | May 8, 2025 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1995 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | Maui County, Dept of Water Supply |
| Other Name | Maui County Water West |
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.