S. Greece Waste Weir Dam
S. Greece Waste Weir Dam is an earth dam located in Monroe County, New York, built in 1918. It carries a High hazard potential classification and has a poor condition assessment.
About S. Greece Waste Weir Dam
The primary purpose of S. Greece 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-round Pond Creek.
The dam stands 19 feet tall and stretches 148 feet across, creates a reservoir covering 890 acres, has a maximum storage capacity of 10,488 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 carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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 01/23/2025.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The New York dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New York |
| County | Monroe |
| River/Stream | Tr-round Pond Creek |
| Coordinates | 43.18475, -77.71089 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 148 ft |
| Year Completed | 1918 (108 years old) |
Storage & Hydraulics
| NID Storage | 10,488 acre-ft |
| Max Storage | 10,488 acre-ft |
| Normal Storage | 8,640 acre-ft |
| Surface Area | 890 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Navigation |
| Owner | New York State Canal Corporation |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 01/23/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY17181 |
| Federal ID | NY17181 |
| More Info | State Dam Safety Program |