Thayers Pond Dam is a concrete dam located in Fairfield County, Connecticut, built in 1920. It carries a Significant hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 111 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Thayers Pond Dam
The primary purpose of Thayers Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by The Lake Club Inc. (private). It impounds the Thayers Brook near Wilton.
The dam stands 10 feet tall and stretches 111 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 0 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.
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Location
| State | Connecticut |
| County | Fairfield |
| Nearest City | Wilton |
| River/Stream | Thayers Brook |
| Coordinates | 41.17951, -73.46535 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 111 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 27 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | The Lake Club Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00213 |
| Federal ID | CT00213 |
| More Info | State Dam Safety Program |