Pierce's Detention Dam
Pierce's Detention Dam is an earth dam located in New Haven County, Connecticut. It carries a Significant hazard potential classification and has a fair condition assessment.
About Pierce's Detention Dam
The primary purpose of Pierce's Detention Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Town Of Southbury (private). It impounds the Trib. Of Transylvania Br..
The dam stands 8 feet tall and stretches 780 feet across, creates a reservoir covering 2 acres, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 02/23/2021.
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Location
| State | Connecticut |
| County | New Haven |
| River/Stream | Trib. Of Transylvania Br. |
| Coordinates | 41.50624, -73.24953 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 780 ft |
Storage & Hydraulics
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Town of Southbury |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 02/23/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT50009 |
| Federal ID | CT50009 |
| More Info | State Dam Safety Program |