Vanista Hollow Pond Dam
Vanista Hollow Pond Dam is an earth dam located in Chenango County, New York, built in 2008. It carries a Significant hazard potential classification.
About Vanista Hollow Pond Dam
The primary purpose of Vanista Hollow Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Timothy Simpson (private). It impounds the Tr-wilkens Brook near North Afton.
The dam stands 22 feet tall and stretches 450 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 116 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2008, the structure is relatively new.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 05/27/2025.
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Location
| State | New York |
| County | Chenango |
| Nearest City | North Afton |
| River/Stream | Tr-wilkens Brook |
| Coordinates | 42.30506, -75.57181 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 450 ft |
| Year Completed | 2008 (18 years old) |
Storage & Hydraulics
| NID Storage | 116 acre-ft |
| Max Storage | 116 acre-ft |
| Normal Storage | 96 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 449 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Timothy Simpson |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 05/27/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY16221 |
| Federal ID | NY16221 |
| More Info | State Dam Safety Program |