Lake Mark Dam
Lake Mark Dam is a concrete dam located in Tolland County, Connecticut, built in 1957. It carries a Significant hazard potential classification and has a fair condition assessment.
About Lake Mark Dam
The primary purpose of Lake Mark Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Prenoveau (private). It impounds the Diamond Ledge Brook near West Stafford.
The dam stands 21 feet tall and stretches 520 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 185 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1957, the structure is well into its service life at over 50 years 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. An emergency action plan is in place for this dam. The most recent inspection on record was 04/12/2022.
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Location
| State | Connecticut |
| County | Tolland |
| Nearest City | West Stafford |
| River/Stream | Diamond Ledge Brook |
| Coordinates | 42.00127, -72.34946 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 520 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 185 acre-ft |
| Max Storage | 185 acre-ft |
| Normal Storage | 75 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 463 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Prenoveau |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/12/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00337 |
| Federal ID | CT00337 |
| More Info | State Dam Safety Program |