Maui Reservoir 40
High HazardFair ConditionEmergency Action Plan: Yes
Location
| County | Maui |
| Nearest City | Pukalani |
| River/Stream | KALIALINUI GULCH OFFSTREAM |
| Coordinates | 20.81545, -156.36805 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 47 ft |
| Dam Height | 42 ft |
| Dam Length | 810 ft |
| Year Completed | 1926 (100 years old) |
Storage & Hydraulics
| NID Storage | 165 acre-ft |
| Max Storage | 165 acre-ft |
| Normal Storage | 159 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Mahi Pono Holdings, LLC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 07/19/2025 |
| Emergency Action Plan | Yes |