Movable Dam At Rocky Rift
Movable Dam At Rocky Rift is an other dam located in Herkimer County, New York, built in 1926. It carries a Significant hazard potential classification.
About Movable Dam At Rocky Rift
The primary purpose of Movable Dam At Rocky Rift 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 Little Falls.
The dam stands 6 feet tall and stretches 361 feet across, creates a reservoir covering 85 acres, and has a maximum storage capacity of 1,275 acre-feet. Completed in 1926, the structure is well-established, with more than 75 years of service.
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 | Little Falls |
| River/Stream | Erie Canal-mohawk River |
| Coordinates | 43.01417, -74.78417 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 6 ft |
| Dam Height | 6 ft |
| Dam Length | 361 ft |
| Year Completed | 1926 (100 years old) |
Storage & Hydraulics
| NID Storage | 1,275 acre-ft |
| Max Storage | 1,275 acre-ft |
| Normal Storage | 1,275 acre-ft |
| Surface Area | 85 acres |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | New York State Canal Corporation |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 11/09/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY00957 |
| Federal ID | NY00957 |
| More Info | State Dam Safety Program |