Lemanquais Pond Dam
Lemanquais Pond Dam is an earth dam located in Litchfield County, Connecticut, built in 1968. It carries a Significant hazard potential classification and has a fair condition assessment.
About Lemanquais Pond Dam
The primary purpose of Lemanquais Pond Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Joseph Sparveri & Johnathan Thompson, Trustees (private). It impounds the W Br Farmington R Tr near Colebrook.
The dam stands 10 feet tall and stretches 300 feet across, creates a reservoir covering 23 acres, has a storage capacity of 117 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1968, 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. The most recent inspection on record was 01/13/2023.
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Location
| State | Connecticut |
| County | Litchfield |
| Nearest City | Colebrook |
| River/Stream | W Br Farmington R Tr |
| Coordinates | 42.02876, -73.06938 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 300 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 117 acre-ft |
| Normal Storage | 117 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Joseph Sparveri & Johnathan Thompson, Trustees |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 01/13/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00456 |
| Federal ID | CT00456 |
| More Info | State Dam Safety Program |