Long Pond Dam
Long Pond Dam is an earth dam located in New London County, Connecticut, built in 1880. It carries a Significant hazard potential classification and has a fair condition assessment.
About Long Pond Dam
The primary purpose of Long Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lantern Hill Valley Association (private). It impounds the Whitford Brook near Ledyard.
The dam stands 6 feet tall and stretches 200 feet across, creates a reservoir covering 99 acres, has a storage capacity of 297 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1880, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 04/22/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Connecticut |
| County | New London |
| Nearest City | Ledyard |
| River/Stream | Whitford Brook |
| Coordinates | 41.43872, -71.94444 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 6 ft |
| Dam Height | 6 ft |
| Dam Length | 200 ft |
| Year Completed | 1880 (146 years old) |
Storage & Hydraulics
| NID Storage | 297 acre-ft |
| Normal Storage | 297 acre-ft |
| Surface Area | 99 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 519 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lantern Hill Valley Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/22/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00527 |
| Federal ID | CT00527 |
| More Info | State Dam Safety Program |