Frankfort Reservoir Dam
Frankfort Reservoir Dam is an earth dam located in Herkimer County, New York, built in 1908. It carries a Significant hazard potential classification and has a poor condition assessment.
About Frankfort Reservoir Dam
The primary purpose of Frankfort Reservoir Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Village Of Frankfort (local government). It impounds the Tr-mohawk River near Frankfort.
The dam stands 45 feet tall and stretches 415 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 30 acre-feet. Completed in 1908, the structure is over a century 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 03/27/2025.
At 45 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | New York |
| County | Herkimer |
| Nearest City | Frankfort |
| River/Stream | Tr-mohawk River |
| Coordinates | 43.02167, -75.08639 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 415 ft |
| Year Completed | 1908 (118 years old) |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 2 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | VILLAGE OF FRANKFORT |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 03/27/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY14970 |
| Federal ID | NY14970 |
| More Info | State Dam Safety Program |