Upper Lynde Basin Dam
Upper Lynde Basin Dam is an earth dam located in Worcester County, Massachusetts, built in 1924. It carries a Significant hazard potential classification and has a poor condition assessment.
About Upper Lynde Basin Dam
Upper Lynde Basin Dam is a dam in Worcester, Massachusetts. The dam is owned by Town Of Clinton (local government). It impounds the Lynde Brook near Sterling.
The dam stands 15 feet tall and stretches 200 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 65 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1924, 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 05/19/2021.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Sterling |
| River/Stream | Lynde Brook |
| Coordinates | 42.47210, -71.77743 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Length | 200 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 65 acre-ft |
| Max Storage | 65 acre-ft |
| Normal Storage | 44 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 145 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Town of Clinton |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 05/19/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA01308 |
| Federal ID | MA01308 |
| More Info | State Dam Safety Program |