Diamond Pond Dam
Diamond Pond Dam is an earth dam located in Norfolk County, Massachusetts. It carries a Significant hazard potential classification and has a poor condition assessment.
About Diamond Pond Dam
The primary purpose of Diamond Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Ashnick Realty Holding, Llc (private). It impounds the Diamond Brook; Brook From Clarks Pond near Walpole.
The dam stands 10 feet tall and stretches 121 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 55 acre-feet, and collects water from a drainage area of 1 square miles.
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. The most recent inspection on record was 06/09/2023.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Massachusetts |
| County | Norfolk |
| Nearest City | Walpole |
| River/Stream | Diamond Brook; Brook From Clarks Pond |
| Coordinates | 42.14427, -71.24427 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Length | 121 ft |
Storage & Hydraulics
| NID Storage | 55 acre-ft |
| Max Storage | 55 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 318 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Ashnick Realty Holding, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 06/09/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MA02484 |
| Federal ID | MA02484 |
| More Info | State Dam Safety Program |