Movable Dam at Herkimer is an other dam located in Herkimer County, New York, built in 1915. It carries a Significant hazard potential classification.
Dam profile
NID height · 6 ft6 ft tall and 400 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Movable Dam at Herkimer
The primary purpose of Movable Dam at Herkimer is navigation. The dam maintains water levels sufficient for boat and barge traffic, supporting commercial or recreational navigation on the waterway. The dam is owned by New York State Canal Corporation (state). It impounds the Erie Canal Mohawk River near Herkimer.
The dam stands 6 feet tall and stretches 400 feet across, creates a reservoir covering 420 acres, and has a maximum storage capacity of 2,200 acre-feet. Completed in 1915, 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. The most recent inspection on record was 11/09/2021.
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Location
| State | New York |
| County | Herkimer |
| Nearest City | Herkimer |
| River/Stream | Erie Canal Mohawk River |
| Coordinates | 43.01611, -74.99417 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 6 ft |
| Dam Height | 6 ft |
| Dam Length | 400 ft |
| Year Completed | 1915 (111 years old) |
Storage & Hydraulics
| NID Storage | 2,200 acre-ft |
| Max Storage | 2,200 acre-ft |
| Normal Storage | 2,200 acre-ft |
| Surface Area | 420 acres |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | New York State Canal Corporation |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 11/09/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY00966 |
| Federal ID | NY00966 |
| More Info | State Dam Safety Program |