Lake Konomoc Dike
Lake Konomoc Dike is an earth dam located in New London County, Connecticut, built in 1969. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lake Konomoc Dike
The primary purpose of Lake Konomoc Dike is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of New London (local government). It impounds the Lakes Pond Brook near Montville.
The dam stands 8 feet tall and stretches 350 feet across, creates a reservoir covering 286 acres, and collects water from a drainage area of 1 square miles. Completed in 1969, the structure is well into its service life at over 50 years 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 01/26/2023.
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Location
| State | Connecticut |
| County | New London |
| Nearest City | Montville |
| River/Stream | Lakes Pond Brook |
| Coordinates | 41.41955, -72.18360 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 350 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| Surface Area | 286 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of New London |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/26/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00152 |
| Federal ID | CT00152S02 |
| More Info | State Dam Safety Program |