Lock C-11 Dam
Lock C-11 Dam is a concrete dam located in Washington County, New York, built in 1910. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lock C-11 Dam
The primary purpose of Lock C-11 Dam 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 Champlain Canal near Whitehall.
The dam stands 15 feet tall and stretches 113 feet across, creates a reservoir covering 14 acres, and has a maximum storage capacity of 79 acre-feet. Completed in 1910, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/04/2023.
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Location
| State | New York |
| County | Washington |
| Nearest City | Whitehall |
| River/Stream | Champlain Canal |
| Coordinates | 43.46722, -73.43528 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 113 ft |
| Year Completed | 1910 (116 years old) |
Storage & Hydraulics
| NID Storage | 79 acre-ft |
| Max Storage | 79 acre-ft |
| Normal Storage | 79 acre-ft |
| Surface Area | 14 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Navigation |
| Owner | New York State Canal Corporation |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/04/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY01075 |
| Federal ID | NY01075 |
| More Info | State Dam Safety Program |