26Total Dams
1High Hazard
7Significant
Dam Safety in Washington County, New York
Washington County has 26 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life. Another 7 carry a significant hazard classification. Currently, 2 dams have a condition assessment of poor or unsatisfactory.
The average dam in Washington County is 108 years old. The most common purpose is hydroelectric. The tallest dam is Middle Falls at 48 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Hadlock Pond Dam | High | Satisfactory | 29 | Recreation | 1896 |
| Pike Brook Dam | Significant | Poor | 30 | Water Supply | 1924 |
| Lock C-12 | Significant | Satisfactory | 21 | Hydroelectric | 1911 |
| Lock C-11 Dam | Significant | Satisfactory | 15 | Navigation | 1910 |
| Boardman St. Reservoir Dam | Significant | Poor | 15 | Other | 1870 |
| Sly Pond Dam | Significant | Satisfactory | 14 | Recreation | 1896 |
| Middle Greenwich Dam | Significant | Not assessed | 10 | Hydroelectric | 1902 |
| Lower Greenwich Dam | Significant | Not assessed | 7 | Irrigation | 1925 |
| Middle Falls | Low | Satisfactory | 48 | Hydroelectric | 1915 |
| Carver Falls | Low | Satisfactory | 34 | Hydroelectric | 1894 |
| Center Falls | Low | Satisfactory | 28 | Hydroelectric | 1909 |
| Clark Mills Upper | Low | Satisfactory | 23 | Hydroelectric | 1904 |
| Crystal Lake Dam | Low | Not assessed | 21 | Water Supply | 1889 |
| Clarks Mills Lower | Low | Satisfactory | 20 | Hydroelectric | 1910 |
| Mirror Lake Dam | Low | Not assessed | 18 | Other | 1991 |
| Lock C-9 Dam | Low | Not assessed | 17 | Navigation | 1907 |
| Northumberland Dam | Low | Not assessed | 16 | Navigation | 1870 |
| Pine Lake Dam & Dike | Low | Not assessed | 16 | Water Supply | 1925 |
| Upper Greenwich | Low | Satisfactory | 14 | Hydroelectric | 1918 |
| Dolph Pond Dam | Low | Not assessed | 12 | Water Supply | 1934 |
| Bott Pond Dam | Low | Not assessed | 10 | Recreation | 1978 |
| Joseph Boyd Dam | Low | Not assessed | 10 | Fish and Wildlife Pond | 1968 |
| Cossayuna Lake Outlet Dam | Low | Not assessed | 10 | Recreation | 1815 |
| Carters Pond Dam | Low | Not assessed | 8 | Fish and Wildlife Pond | 1991 |
| Copeland Pond Dam | Low | Not assessed | 7 | Recreation | 1910 |
| Fort Miller | Low | Satisfactory | 7 | Hydroelectric | 1984 |