Mau Reservoir
Hawaii — Kauai County — KALAHEO GULCH
Location
| State | Hawaii |
| County | Kauai |
| River | KALAHEO GULCH |
| Coordinates | 21.92719, -159.53097 |
Physical Characteristics
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 460 ft |
| NID Storage | 79 acre-ft |
| Max Storage | 79 acre-ft |
| Surface Area | 7 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Poor |
| EAP Status | Yes |
| Last Inspection | July 31, 2025 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1901 |
| Primary Purpose | Irrigation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | BBCP Kauai Operating, LLC |
| Other Name | No. 4 Reservoir |
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.