Frog Pond Dam is an earth dam located in Windham County, Connecticut, built in 1870. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 130 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Frog Pond Dam
The primary purpose of Frog Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Edelman (private). It impounds the Indian Hollow Brook near Windham.
The dam stands 10 feet tall and stretches 130 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1870, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/30/2015. That was over 10 years ago.
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Location
| State | Connecticut |
| County | Windham |
| Nearest City | Windham |
| River/Stream | Indian Hollow Brook |
| Coordinates | 41.69967, -72.13753 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 130 ft |
| Year Completed | 1870 (156 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 287 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Edelman |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/30/2015 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00195 |
| Federal ID | CT00195 |
| More Info | State Dam Safety Program |