15Total Dams
3High Hazard
6Significant
Dam Safety in Orleans County, New York
Orleans County has 15 dams tracked in the National Inventory of Dams. Of these, 3 are classified as high hazard — meaning failure would probably cause loss of human life. Another 6 carry a significant hazard classification. Currently, 3 dams have a condition assessment of poor or unsatisfactory.
The average dam in Orleans County is 91 years old. The most common purpose is other. The tallest dam is Oak Orchard Creek Dam at 90 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Oak Orchard Creek Dam | High | Satisfactory | 90 | Hydroelectric | 1917 |
| Glenwood Lake Dam | High | Satisfactory | 31 | Hydroelectric | 1903 |
| Eagle Harbor Waste Weir Dam | High | Not assessed | 18 | Navigation | 1918 |
| Otter Creek Dam | Significant | Poor | 37 | Recreation | 1916 |
| Albion Waste Gate & Weir Dam | Significant | Not assessed | 26 | Navigation | 1911 |
| Medina Aqueduct Dam | Significant | Not assessed | 21 | Hydroelectric | 1967 |
| Brockville Waste Weir Dam | Significant | Not assessed | 16 | Navigation | 1918 |
| Village of Lyndonville Dam | Significant | Poor | 11 | Recreation | 1948 |
| Shelby Center Dam | Significant | Poor | 6 | Other | 1870 |
| Holley Waste Weir Dam | Low | Not assessed | 15 | Navigation | 1918 |
| Ringneck Marsh Dam | Low | Fair | 15 | Fish and Wildlife Pond | 1964 |
| Iroquois National Refuge Dam Site #7 | Low | Not assessed | 11 | Other | 1967 |
| Iroquois #5 Dam | Low | Fair | 11 | Fish and Wildlife Pond | 1970 |
| Spring Marsh Dam | Low | Not assessed | 8 | Other | 1969 |
| Iroquois National Refuge Dam Site #6 | Low | Not assessed | 7 | Other | 1966 |