Maui Reservoir 82
Maui Reservoir 82 is an earth dam located in Maui County, Hawaii, built in 1917. It carries a Significant hazard potential classification and has a poor condition assessment.
About Maui Reservoir 82
The primary purpose of Maui Reservoir 82 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Mp Central A, Llc (private). It impounds the Fed By Irrigation Ditch near Waiakoa Homesteads.
The dam stands 13 feet tall and stretches 1,250 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 61 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1917, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 04/10/2025.
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Location
| State | Hawaii |
| County | Maui |
| Nearest City | Waiakoa Homesteads |
| River/Stream | Fed By Irrigation Ditch |
| Coordinates | 20.81084, -156.42334 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 1,250 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 61 acre-ft |
| Max Storage | 61 acre-ft |
| Normal Storage | 55 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | MP Central A, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/10/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | HI00087 |
| Federal ID | HI00087 |
| More Info | State Dam Safety Program |