Fairy Lake Dike is a dam located in New London County, Connecticut, built in 1957. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 17 ft17 ft tall and 300 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 Fairy Lake Dike
The primary purpose of Fairy Lake 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).
The dam stands 17 feet tall and stretches 300 feet across, creates a reservoir covering 88 acres, has a maximum storage capacity of 780 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1957, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 10/15/2019.
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Location
| State | Connecticut |
| County | New London |
| Coordinates | 41.46888, -72.25528 |
Physical Characteristics
| NID Height | 17 ft |
| Dam Height | 10 ft |
| Dam Length | 300 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 780 acre-ft |
| Max Storage | 780 acre-ft |
| Normal Storage | 440 acre-ft |
| Surface Area | 88 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of New London |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 10/15/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00373 |
| Federal ID | CT00373S02 |
| More Info | State Dam Safety Program |