White Reservoir Dam
White Reservoir Dam is a masonry dam located in Hampshire County, Massachusetts, built in 1912. It carries a Significant hazard potential classification and has a fair condition assessment.
About White Reservoir Dam
White Reservoir Dam is a dam in Hampshire, Massachusetts. The dam is owned by City Of Holyoke (local government). It impounds the Manhan River near Southampton.
The dam stands 51 feet tall and stretches 350 feet across, creates a reservoir covering 118 acres, has a maximum storage capacity of 2,460 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1912, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 10/19/2023.
At 51 feet, this dam is taller than 93% of dams nationwide.
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Location
| State | Massachusetts |
| County | Hampshire |
| Nearest City | Southampton |
| River/Stream | Manhan River |
| Coordinates | 42.25482, -72.78695 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 51 ft |
| Dam Length | 350 ft |
| Year Completed | 1912 (114 years old) |
Storage & Hydraulics
| NID Storage | 2,460 acre-ft |
| Max Storage | 2,460 acre-ft |
| Surface Area | 118 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 940 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | City of Holyoke |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 10/19/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00606 |
| Federal ID | MA00606 |
| More Info | State Dam Safety Program |