Asylum Reservoir #5 Dam
Asylum Reservoir #5 Dam is an earth dam located in Middlesex County, Connecticut, built in 1879. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Asylum Reservoir #5 Dam
The primary purpose of Asylum Reservoir #5 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 Valley Hospital (state). It impounds the Unnamed near Middletown.
The dam stands 15 feet tall and stretches 475 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 154 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1879, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/21/2021.
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Location
| State | Connecticut |
| County | Middlesex |
| Nearest City | Middletown |
| River/Stream | Unnamed |
| Coordinates | 41.53729, -72.59987 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 475 ft |
| Year Completed | 1879 (147 years old) |
Storage & Hydraulics
| NID Storage | 154 acre-ft |
| Max Storage | 154 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 880 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Connecticut Valley Hospital |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/21/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00148 |
| Federal ID | CT00148 |
| More Info | State Dam Safety Program |