42Total Dams
9High Hazard
10Significant
Dam Safety in Ulster County, New York
Ulster County has 42 dams tracked in the National Inventory of Dams. Of these, 9 are classified as high hazard — meaning failure would probably cause loss of human life. Another 10 carry a significant hazard classification. Currently, 7 dams have a condition assessment of poor or unsatisfactory.
The average dam in Ulster County is 87 years old. The most common purpose is recreation. The tallest dam is Ashokan Dam at 213 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Ashokan Dam | High | Satisfactory | 213 | Water Supply | 1916 |
| Merriman Dam | High | Satisfactory | 195 | Water Supply | 1945 |
| Sturgeon Pool Dam | High | Satisfactory | 109 | Hydroelectric | 1922 |
| Honk Falls Dam | High | Poor | 42 | Recreation | 1898 |
| Cooper Lake Dam and West Dike | High | Satisfactory | 40 | Water Supply | 1800 |
| Tillson Lake Dam | High | Poor | 39 | Recreation | 1930 |
| Diamond Mills Paper Company Dam | High | Satisfactory | 35 | Irrigation | 1929 |
| Binnewater Reservoir Dam & Dike | High | Poor | 30 | Recreation | 1926 |
| Pine Hill Lake Dam | High | Satisfactory | 28 | Recreation | 1987 |
| Kingston Reservoir #2 Dam | Significant | Poor | 40 | Recreation | 1910 |
| Pecks Dam | Significant | Poor | 30 | Recreation | 1962 |
| Marlborough Water District Dam & Dike | Significant | Not assessed | 23 | Water Supply | 1964 |
| Cape Pond Dam | Significant | Satisfactory | 20 | Recreation | 1914 |
| Highland Water Dist Res Dam & Dike | Significant | Fair | 18 | Recreation | 1939 |
| Vrasidas Dam | Significant | Poor | 12 | Recreation | 1947 |
| Lyon Lodge Dam | Significant | Poor | 12 | Recreation | 1925 |
| Highland Lower Reservoir Dam | Significant | Fair | 12 | Water Supply | 1916 |
| Lake Maratanza Dam | Significant | Fair | 12 | Water Supply | 1923 |
| Bridgeview Plaza Dam | Significant | Not assessed | 5 | Flood Risk Reduction | |
| Winnisook Lake Dam | Low | Not assessed | 42 | Recreation | |
| Snow Making Pond Dam | Low | Not assessed | 36 | Recreation | 1975 |
| Dashville Dam | Low | Not assessed | 34 | Hydroelectric | 1922 |
| High Falls | Low | Satisfactory | 30 | Hydroelectric | 1935 |
| Wawayanda Camp Dam | Low | Not assessed | 28 | Recreation | 1958 |
| Fly Brook Dam | Low | Not assessed | 25 | Recreation | 1933 |
| Diachishin Lake Dam | Low | Not assessed | 25 | Recreation | 1962 |
| Moony Pond Dam | Low | Not assessed | 25 | Recreation | |
| Forest Lake Dam | Low | Not assessed | 22 | Recreation | 1905 |
| Gregg Farm Pond Dam | Low | Not assessed | 21 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Kingston Reservoir #4 Dam | Low | Not assessed | 20 | Water Supply | 1909 |
| Ulster Heights Lake Dam | Low | Not assessed | 20 | Recreation | 1969 |
| Alder Lake Dam | Low | Not assessed | 18 | Recreation | 1994 |
| North Woods Dam #2 | Low | Not assessed | 18 | Water Supply | 1984 |
| Keejo Lake Dam | Low | Not assessed | 16 | Recreation | 1980 |
| Pinebush Lake Dam | Low | Not assessed | 15 | Recreation | |
| Beecher Lake Dam | Low | Not assessed | 13 | Recreation | 1925 |
| Eddyville Dam | Low | Not assessed | 12 | Other | 1850 |
| Ylyvaal Lake Dam | Low | Not assessed | 12 | Recreation | 1973 |
| Merrill & Rutherford Dam | Low | Not assessed | 11 | Recreation | 1969 |
| I Scott Watkins Dam | Low | Not assessed | 10 | Recreation | 1983 |
| Kenozia Lake Dam | Low | Not assessed | 10 | Recreation | 1958 |
| Round Pond Dam | Low | Not assessed | 10 | Recreation | 1961 |