Stony Brook Pond Dam
Stony Brook Pond Dam is an earth dam located in Plymouth County, Massachusetts, built in 2010. It carries a Significant hazard potential classification and has a poor condition assessment.
About Stony Brook Pond Dam
The primary purpose of Stony Brook Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town Of Middleborough (local government). It impounds the Nemasket River Tributary near Middleborough.
The dam stands 10 feet tall and stretches 140 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 69 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2010, the structure is relatively new.
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 08/31/2019.
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Location
| State | Massachusetts |
| County | Plymouth |
| Nearest City | Middleborough |
| River/Stream | Nemasket River Tributary |
| Coordinates | 41.89991, -70.89084 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Length | 140 ft |
| Year Completed | 2010 (16 years old) |
Storage & Hydraulics
| NID Storage | 69 acre-ft |
| Max Storage | 69 acre-ft |
| Normal Storage | 37 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Middleborough |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 08/31/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA03390 |
| Federal ID | MA03390 |
| More Info | State Dam Safety Program |