Spencer Pond Dam
Spencer Pond Dam is an earth dam located in New London County, Connecticut, built in 1900. It carries a Significant hazard potential classification and has a poor condition assessment.
About Spencer Pond Dam
The primary purpose of Spencer Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Estate Of Herman Deihl (private). It impounds the Spencer Pond Brook near Windham.
The dam stands 12 feet tall and stretches 1,010 feet across, creates a reservoir covering 34 acres, has a maximum storage capacity of 170 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1900, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 12/04/2020.
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Location
| State | Connecticut |
| County | New London |
| Nearest City | Windham |
| River/Stream | Spencer Pond Brook |
| Coordinates | 41.66394, -72.17110 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 1,010 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 170 acre-ft |
| Max Storage | 170 acre-ft |
| Normal Storage | 170 acre-ft |
| Surface Area | 34 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 140 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Estate of Herman Deihl |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 12/04/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00557 |
| Federal ID | CT00557 |
| More Info | State Dam Safety Program |