Crackrock Pond Dam is an earth dam located in Norfolk County, Massachusetts, built in 1737. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 14 ft14 ft tall and 140 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Crackrock Pond Dam
The primary purpose of Crackrock Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Neponset Reservoir Company;town of Foxborough (local government). It impounds the Neponset River near Foxborough.
The dam stands 14 feet tall and stretches 140 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 104 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1737, the structure is one of the older dams in the region, with over a century and a half of service.
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 11/17/2021.
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Location
| State | Massachusetts |
| County | Norfolk |
| Nearest City | Foxborough |
| River/Stream | Neponset River |
| Coordinates | 42.08554, -71.25643 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Length | 140 ft |
| Year Completed | 1737 (289 years old) |
Storage & Hydraulics
| NID Storage | 104 acre-ft |
| Max Storage | 104 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 85 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Neponset Reservoir Company;town of Foxborough |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/17/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00816 |
| Federal ID | MA00816 |
| More Info | State Dam Safety Program |