Dams in Ulster County, New York
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 Rated | 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 Rated | 5 | Flood Risk Reduction | |
| Winnisook Lake Dam | Low | Not Rated | 42 | Recreation | |
| Snow Making Pond Dam | Low | Not Rated | 36 | Recreation | 1975 |
| Dashville Dam | Low | Not Rated | 34 | Hydroelectric | 1922 |
| High Falls | Low | Satisfactory | 30 | Hydroelectric | 1935 |
| Wawayanda Camp Dam | Low | Not Rated | 28 | Recreation | 1958 |
| Fly Brook Dam | Low | Not Rated | 25 | Recreation | 1933 |
| Diachishin Lake Dam | Low | Not Rated | 25 | Recreation | 1962 |
| Moony Pond Dam | Low | Not Rated | 25 | Recreation | |
| Forest Lake Dam | Low | Not Rated | 22 | Recreation | 1905 |
| Gregg Farm Pond Dam | Low | Not Rated | 21 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Kingston Reservoir #4 Dam | Low | Not Rated | 20 | Water Supply | 1909 |
| Ulster Heights Lake Dam | Low | Not Rated | 20 | Recreation | 1969 |
| Alder Lake Dam | Low | Not Rated | 18 | Recreation | 1994 |
| North Woods Dam #2 | Low | Not Rated | 18 | Water Supply | 1984 |
| Keejo Lake Dam | Low | Not Rated | 16 | Recreation | 1980 |
| Pinebush Lake Dam | Low | Not Rated | 15 | Recreation | |
| Beecher Lake Dam | Low | Not Rated | 13 | Recreation | 1925 |
| Eddyville Dam | Low | Not Rated | 12 | Other | 1850 |
| Ylyvaal Lake Dam | Low | Not Rated | 12 | Recreation | 1973 |
| Merrill & Rutherford Dam | Low | Not Rated | 11 | Recreation | 1969 |
| I Scott Watkins Dam | Low | Not Rated | 10 | Recreation | 1983 |
| Kenozia Lake Dam | Low | Not Rated | 10 | Recreation | 1958 |
| Round Pond Dam | Low | Not Rated | 10 | Recreation | 1961 |