28Total Dams
7High Hazard
7Significant
Dam Safety in Greene County, New York
Greene County has 28 dams tracked in the National Inventory of Dams. Of these, 7 are classified as high hazard — meaning failure would probably cause loss of human life. Another 7 carry a significant hazard classification. Currently, 4 dams have a condition assessment of poor or unsatisfactory.
The average dam in Greene County is 68 years old. The most common purpose is recreation. The tallest dam is Sleepy Hollow Dam at 83 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Sleepy Hollow Dam | High | Satisfactory | 83 | Recreation | 1972 |
| Batavia Kill Watershed Dam #1 | High | Satisfactory | 74 | Recreation | 1974 |
| Batavia Kill Watershed Dam #3 | High | Satisfactory | 63 | Flood Risk Reduction | 1970 |
| Batavia Kill Watershed Dam #4a | High | Satisfactory | 57 | Flood Risk Reduction | 1967 |
| Potuck Reservoir Dam | High | Satisfactory | 37 | Water Supply | 1930 |
| Camp Harriman Dam | High | Satisfactory | 28 | Recreation | 1913 |
| Hunter Mountain Lake Dam | High | Satisfactory | 19 | Water Supply | 1993 |
| Coxsackie Reservoir Dam | Significant | Poor | 31 | Water Supply | 1940 |
| Medway Dam | Significant | Poor | 30 | Water Supply | 1967 |
| Colgate Lake Dam | Significant | Satisfactory | 20 | Recreation | 2007 |
| Onteora Pond Dam | Significant | Poor | 18 | Irrigation | 1924 |
| Tannersville Reservoir #3 Dam | Significant | Poor | 17 | Water Supply | 1957 |
| South Lake Dam | Significant | Not assessed | 15 | Recreation | 1973 |
| Athens Water Supply Dam | Significant | Satisfactory | 8 | Water Supply | 1925 |
| Coxsackie Reservoir #2 Dam | Low | Fair | 30 | Water Supply | 1950 |
| Klatz Dam | Low | Not assessed | 24 | Other | 1907 |
| Lake Heloise Dam | Low | Not assessed | 20 | Recreation | 1910 |
| William Mead Dam | Low | Not assessed | 17 | Recreation | 1968 |
| R & E Banks Dam | Low | Not assessed | 16 | Recreation | 1966 |
| Knupfer Dam & Dike | Low | Not assessed | 16 | Recreation | 1972 |
| Bronck Lake Dam | Low | Not assessed | 14 | Recreation | 1941 |
| Tranquility Camp Dam | Low | Not assessed | 13 | Recreation | 1977 |
| Levy Dam | Low | Not assessed | 12 | Recreation | 1988 |
| Durham Concert Site Dam and Dike | Low | Not assessed | 10 | Recreation | 2003 |
| Carelas Lake Dam | Low | Not assessed | 10 | Recreation | 1952 |
| Beaver Dam Lake Dam | Low | Not assessed | 7 | Recreation | 1940 |
| Friar Tuck Pond Dam | Low | Not assessed | 7 | Recreation | 1975 |
| Coxsackie Corr Fclty Retention Pnd Dam | Low | Not assessed | 7 | Flood Risk Reduction |