Griswold Pond #2 Dam is a masonry dam located in Middlesex County, Connecticut. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 70 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 Griswold Pond #2 Dam
The primary purpose of Griswold Pond #2 Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Henkind-rottner (private). It impounds the Pattaconk Brook near Chester Village.
The dam stands 10 feet tall and stretches 70 feet across, creates a reservoir covering 1 acres, and collects water from a drainage area of 8 square miles.
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. The most recent inspection on record was 09/24/2024.
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Location
| State | Connecticut |
| County | Middlesex |
| Nearest City | Chester Village |
| River/Stream | Pattaconk Brook |
| Coordinates | 41.40272, -72.45108 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 70 ft |
Storage & Hydraulics
| Surface Area | 1 acres |
| Drainage Area | 8 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Henkind-rottner |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 09/24/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00776 |
| Federal ID | CT00776 |
| More Info | State Dam Safety Program |