Mahoney Pond
Mahoney Pond is an earth dam located in Bennington County, Vermont, built in 1997. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Mahoney Pond
The primary purpose of Mahoney Pond is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Stratton Corporation (private). It impounds the Winhall River-os near Winhall.
The dam stands 89 feet tall and stretches 2,600 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 499 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1997, the structure is 29 years 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 06/08/2017. That was 8 years ago, which is on the longer end for a high-hazard structure.
At 89 feet, this dam is taller than 97% of all dams in the United States.
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 Vermont 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 | Vermont |
| County | Bennington |
| Nearest City | Winhall |
| River/Stream | Winhall River-os |
| Coordinates | 43.14368, -72.90633 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 89 ft |
| Dam Height | 89 ft |
| Dam Length | 2,600 ft |
| Year Completed | 1997 (29 years old) |
Storage & Hydraulics
| NID Storage | 499 acre-ft |
| Max Storage | 499 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | STRATTON CORPORATION |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/08/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | VT00346 |
| Federal ID | VT00346 |
| More Info | State Dam Safety Program |