Diversion Dam
Diversion Dam is a dam located in Worcester County, Massachusetts. It carries a Significant hazard potential classification and has a fair condition assessment.
About Diversion Dam
The primary purpose of Diversion Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mark F. Lariviere (private). It impounds the Quinebaug River near Southbridge.
The dam stands 16 feet tall and stretches 100 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 91 acre-feet, and collects water from a drainage area of 136 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. The most recent inspection on record was 10/14/2021.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Southbridge |
| River/Stream | Quinebaug River |
| Coordinates | 42.07187, -72.01403 |
Physical Characteristics
| NID Height | 16 ft |
| Dam Length | 100 ft |
Storage & Hydraulics
| NID Storage | 91 acre-ft |
| Max Storage | 91 acre-ft |
| Normal Storage | 26 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 136 sq mi |
| Max Discharge | 1,800 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mark F. Lariviere |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 10/14/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MA00688 |
| Federal ID | MA00688 |
| More Info | State Dam Safety Program |