Lake Lashaway Dam is an earth dam located in Worcester County, Massachusetts, built in 1926. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 23 ft23 ft tall and 500 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 Lake Lashaway Dam
The primary purpose of Lake Lashaway Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town of East Brookfield (local government). It impounds the East Brookfield River near E. Brookfield.
The dam stands 23 feet tall and stretches 500 feet across, creates a reservoir covering 277 acres, has a maximum storage capacity of 3,526 acre-feet, and collects water from a drainage area of 25 square miles. Completed in 1926, the structure is well-established, with more than 75 years of service.
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 11/23/2020.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | E. Brookfield |
| River/Stream | East Brookfield River |
| Coordinates | 42.22627, -72.05002 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Length | 500 ft |
| Year Completed | 1926 (100 years old) |
Storage & Hydraulics
| NID Storage | 3,526 acre-ft |
| Max Storage | 3,526 acre-ft |
| Normal Storage | 1,320 acre-ft |
| Surface Area | 277 acres |
| Drainage Area | 25 sq mi |
| Max Discharge | 1,650 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of East Brookfield |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 11/23/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00961 |
| Federal ID | MA00961 |
| More Info | State Dam Safety Program |