Lancaster Mill Pond Dam
Lancaster Mill Pond Dam is a stone dam located in Worcester County, Massachusetts. It carries a Significant hazard potential classification and has a fair condition assessment.
About Lancaster Mill Pond Dam
The primary purpose of Lancaster Mill Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by The Weetabix Company Inc. (private). It impounds the South Branch Of Nashua River near Clinton.
The dam stands 26 feet tall and stretches 190 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 500 acre-feet, and collects water from a drainage area of 123 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 06/07/2022.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Clinton |
| River/Stream | South Branch Of Nashua River |
| Coordinates | 42.41026, -71.68160 |
Physical Characteristics
| Dam Type | Stone |
| NID Height | 26 ft |
| Dam Length | 190 ft |
Storage & Hydraulics
| NID Storage | 500 acre-ft |
| Max Storage | 500 acre-ft |
| Normal Storage | 265 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 123 sq mi |
| Max Discharge | 6,040 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | The Weetabix Company Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/07/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00887 |
| Federal ID | MA00887 |
| More Info | State Dam Safety Program |