Asylum Reservoir #4 Dam is an earth dam located in Middlesex County, Connecticut. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 290 ft long, taller than 68% of U.S. dams with a recorded height. 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 Asylum Reservoir #4 Dam
The primary purpose of Asylum Reservoir #4 Dam 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 Connecticut Deep (state). It impounds the Unnamed.
The dam stands 30 feet tall and stretches 290 feet across, creates a reservoir covering 18 acres, has a storage capacity of 500 acre-feet, and collects water from a drainage area of 0 square miles.
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. The most recent inspection on record was 02/04/2020.
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Location
| State | Connecticut |
| County | Middlesex |
| River/Stream | Unnamed |
| Coordinates | 41.54526, -72.60467 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 290 ft |
Storage & Hydraulics
| NID Storage | 500 acre-ft |
| Normal Storage | 500 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Connecticut Deep |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/04/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT01568 |
| Federal ID | CT01568 |
| More Info | State Dam Safety Program |