Windham 4h Lower Pond Dam
Windham 4h Lower Pond Dam is an earth dam located in Windham County, Connecticut, built in 1920. It carries a Significant hazard potential classification and has a unsatisfactory condition assessment.
About Windham 4h Lower Pond Dam
The primary purpose of Windham 4h Lower Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Windham-tolland 4-h Camp (private). It impounds the Lyon Brook.
The dam stands 12 feet tall and stretches 230 feet across, creates a reservoir covering 6 acres, and collects water from a drainage area of 3 square miles. Completed in 1920, 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 12/20/2022.
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Location
| State | Connecticut |
| County | Windham |
| River/Stream | Lyon Brook |
| Coordinates | 41.87704, -72.02515 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 230 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| Surface Area | 6 acres |
| Drainage Area | 3 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Windham-Tolland 4-H Camp |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 12/20/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT01220 |
| Federal ID | CT01220 |
| More Info | State Dam Safety Program |