Mason Farm Pond Dam
Mason Farm Pond Dam is an earth dam located in Columbia County, New York, built in 1965. It carries a Significant hazard potential classification and has a poor condition assessment.
About Mason Farm Pond Dam
The primary purpose of Mason Farm Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Wesley Howard (private). It impounds the Tr-stony Kill near Chatham.
The dam stands 15 feet tall and stretches 383 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 20 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1965, the structure is well into its service life at over 50 years 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/17/2025.
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Location
| State | New York |
| County | Columbia |
| Nearest City | Chatham |
| River/Stream | Tr-stony Kill |
| Coordinates | 42.44639, -73.51583 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 383 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 20 acre-ft |
| Max Storage | 20 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 17 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Wesley Howard |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/17/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY13774 |
| Federal ID | NY13774 |
| More Info | State Dam Safety Program |