Prospect Hill Reservoir Dam is an earth dam located in Bristol County, Massachusetts, built in 1956. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 54 ft54 ft tall and 1,200 ft long, taller than 94% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Prospect Hill Reservoir Dam
The primary purpose of Prospect Hill Reservoir Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City of Taunton (local government). It impounds the None near Taunton.
The dam stands 54 feet tall and stretches 1,200 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 77 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1956, the structure is well into its service life at over 50 years 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 04/01/2020.
At 54 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Massachusetts |
| County | Bristol |
| Nearest City | Taunton |
| River/Stream | None |
| Coordinates | 41.93915, -71.09807 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 54 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 77 acre-ft |
| Max Storage | 77 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 4 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Taunton |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/01/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00811 |
| Federal ID | MA00811 |
| More Info | State Dam Safety Program |