Brockville Waste Weir Dam is a concrete dam located in Orleans County, New York, built in 1918. It carries a Significant hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 52 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Brockville Waste Weir Dam
The primary purpose of Brockville Waste Weir 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 Tr-west Br. Sandy Creek near Brockville.
The dam stands 16 feet tall and stretches 52 feet across, creates a reservoir covering 890 acres, has a maximum storage capacity of 11,488 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1918, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 03/04/2024.
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Location
| State | New York |
| County | Orleans |
| Nearest City | Brockville |
| River/Stream | Tr-west Br. Sandy Creek |
| Coordinates | 43.25333, -78.08736 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 52 ft |
| Year Completed | 1918 (108 years old) |
Storage & Hydraulics
| NID Storage | 11,488 acre-ft |
| Max Storage | 11,488 acre-ft |
| Normal Storage | 8,640 acre-ft |
| Surface Area | 890 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 475 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Navigation |
| Owner | New York State Canal Corporation |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 03/04/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY17192 |
| Federal ID | NY17192 |
| More Info | State Dam Safety Program |