Tankerhoosen Lake North Dam
Tankerhoosen Lake North Dam is an earth dam located in Tolland County, Connecticut, built in 1830. It carries a Significant hazard potential classification and has a poor condition assessment.
About Tankerhoosen Lake North Dam
The primary purpose of Tankerhoosen Lake North Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Connecticut Deep (state). It impounds the Tankerhoosen River near Vernon.
The dam stands 16 feet tall and stretches 237 feet across, creates a reservoir covering 16 acres, has a maximum storage capacity of 99 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1830, the structure is one of the older dams in the region, with over a century and a half 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 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 12/08/2022.
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Location
| State | Connecticut |
| County | Tolland |
| Nearest City | Vernon |
| River/Stream | Tankerhoosen River |
| Coordinates | 41.82678, -72.47992 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 237 ft |
| Year Completed | 1830 (196 years old) |
Storage & Hydraulics
| NID Storage | 99 acre-ft |
| Max Storage | 99 acre-ft |
| Normal Storage | 99 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 1,257 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Connecticut DEEP |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 12/08/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00623 |
| Federal ID | CT00623 |
| More Info | State Dam Safety Program |