Quassapaug Lake Dam
Quassapaug Lake Dam is an earth dam located in New Haven County, Connecticut, built in 1900. It carries a Significant hazard potential classification and has a fair condition assessment.
About Quassapaug Lake Dam
The primary purpose of Quassapaug Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by West Shore Owners Association (private). It impounds the Eightmile Brook near Woodbury.
The dam stands 24 feet tall and stretches 125 feet across, creates a reservoir covering 290 acres, has a storage capacity of 2,601 acre-feet, and collects water from a drainage area of 1 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 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 06/14/2024.
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Location
| State | Connecticut |
| County | New Haven |
| Nearest City | Woodbury |
| River/Stream | Eightmile Brook |
| Coordinates | 41.52692, -73.15780 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 125 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 2,601 acre-ft |
| Normal Storage | 2,601 acre-ft |
| Surface Area | 290 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 97 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | West Shore Owners Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/14/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00329 |
| Federal ID | CT00329 |
| More Info | State Dam Safety Program |