South Norwalk Reservoir Dike
South Norwalk Reservoir Dike is an earth dam located in Fairfield County, Connecticut, built in 1899. It carries a High hazard potential classification and has a satisfactory condition assessment.
About South Norwalk Reservoir Dike
The primary purpose of South Norwalk Reservoir 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 South Norwalk Electric And Water (public utility). It impounds the Parting Brook.
The dam stands 20 feet tall and stretches 500 feet across, creates a reservoir covering 155 acres, has a maximum storage capacity of 3,180 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1899, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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 07/11/2023.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Connecticut dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Connecticut |
| County | Fairfield |
| River/Stream | Parting Brook |
| Coordinates | 41.17437, -73.45336 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 500 ft |
| Year Completed | 1899 (127 years old) |
Storage & Hydraulics
| NID Storage | 3,180 acre-ft |
| Max Storage | 3,180 acre-ft |
| Normal Storage | 1,950 acre-ft |
| Surface Area | 155 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | South Norwalk Electric and Water |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/11/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00212 |
| Federal ID | CT00212S02 |
| More Info | State Dam Safety Program |