Whitin Pond Dam is an earth dam located in Worcester County, Massachusetts, built in 1900. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 14 ft14 ft tall and 400 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 Whitin Pond Dam
The primary purpose of Whitin Pond Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Last Known Owner - Dissolved - Red Truck, Llc;mumford River Condominium Trust (private). It impounds the Tributary of Mumford River near Uxbridge.
The dam stands 14 feet tall and stretches 400 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 230 acre-feet, and collects water from a drainage area of 50 square miles. Completed in 1900, the structure is over a century 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 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 01/20/2021.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Uxbridge |
| River/Stream | Tributary of Mumford River |
| Coordinates | 42.09341, -71.63780 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Length | 400 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 230 acre-ft |
| Max Storage | 230 acre-ft |
| Normal Storage | 137 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 50 sq mi |
| Max Discharge | 1,300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Last Known Owner - Dissolved - Red Truck, Llc;mumford River Condominium Trust |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 01/20/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00895 |
| Federal ID | MA00895 |
| More Info | State Dam Safety Program |