Unquomonk Upper Reservoir Dam
Unquomonk Upper Reservoir Dam is an earth dam located in Hampshire County, Massachusetts, built in 1903. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Unquomonk Upper Reservoir Dam
Unquomonk Upper Reservoir Dam is a dam in Hampshire, Massachusetts. The dam is owned by Town Of Williamsburg (local government). It impounds the None (forest Watershed) near Williamsburg.
The dam stands 27 feet tall and stretches 250 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 30 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1903, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/30/2019.
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Location
| State | Massachusetts |
| County | Hampshire |
| Nearest City | Williamsburg |
| River/Stream | None (forest Watershed) |
| Coordinates | 42.37494, -72.74110 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Length | 250 ft |
| Year Completed | 1903 (123 years old) |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Normal Storage | 27 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Town of Williamsburg |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/30/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MA00081 |
| Federal ID | MA00081 |
| More Info | State Dam Safety Program |