Green Haven Correctional Facility Dam
Green Haven Correctional Facility Dam is a concrete dam located in Dutchess County, New York, built in 1939. It carries a High hazard potential classification and has a poor condition assessment.
About Green Haven Correctional Facility Dam
The primary purpose of Green Haven Correctional Facility Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Nys Department Of Corrections And Community Supervision - Faciltiies Planning (state). It impounds the Gardner Hollow Brook near Poughquag.
The dam stands 40 feet tall and stretches 176 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 322 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1939, the structure is well-established, with more than 75 years of service.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 11/06/2024.
At 40 feet, this dam is taller than 87% of dams nationwide.
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 New York 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 | New York |
| County | Dutchess |
| Nearest City | Poughquag |
| River/Stream | Gardner Hollow Brook |
| Coordinates | 41.61056, -73.66361 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 176 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 322 acre-ft |
| Max Storage | 322 acre-ft |
| Normal Storage | 240 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 3,324 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | NYS Department of Corrections and Community Supervision - Faciltiies Planning |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 11/06/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY01170 |
| Federal ID | NY01170 |
| More Info | State Dam Safety Program |