Dams in Sullivan County, New York
132Total Dams
14High Hazard
33Significant
Dam Safety in Sullivan County, New York
Sullivan County has 132 dams tracked in the National Inventory of Dams. Of these, 14 are classified as high hazard — meaning failure would probably cause loss of human life. Another 33 carry a significant hazard classification. Currently, 17 dams have a condition assessment of poor or unsatisfactory.
The average dam in Sullivan County is 91 years old. The most common purpose is recreation. The tallest dam is Neversink Reservoir Dam at 190 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Neversink Reservoir Dam | High | Satisfactory | 190 | Water Supply | 1953 |
| Swinging Bridge | High | Fair | 135 | Hydroelectric | 1930 |
| Toronto | High | Unsatisfactory | 103 | Hydroelectric | 1926 |
| Rio | High | Fair | 101 | Hydroelectric | 1927 |
| Mongaup | High | Fair | 45 | Hydroelectric | 1925 |
| Cliff Lake | High | Satisfactory | 36 | Hydroelectric | 1930 |
| Pleasure Lake Dam | High | Satisfactory | 35 | Recreation | 1875 |
| White Crane Lake Dam | High | Satisfactory | 29 | Recreation | 2005 |
| Toasperns Pond Dam | High | Fair | 27 | Recreation | 1940 |
| Lake Louise Marie Dam | High | Satisfactory | 25 | Recreation | 1912 |
| Yankee Lake Dam | High | Satisfactory | 22 | Recreation | 1844 |
| St Josephs Lake Dam | High | Satisfactory | 22 | Recreation | 1905 |
| Wanaksink Lake Dam | High | Satisfactory | 22 | Recreation | 1852 |
| Lake Jefferson | High | Unsatisfactory | 22 | Hydroelectric | 1927 |
| Mogisca Lake Dam | Significant | Not Rated | 36 | Recreation | 1976 |
| Swan Lake Dam | Significant | Fair | 31 | Recreation | 1894 |
| Triple L Lake Dam | Significant | Not Rated | 30 | Recreation | 1966 |
| Hemlock Lake Dam | Significant | Poor | 27 | Recreation | 1890 |
| Sunrise Lake Dam | Significant | Poor | 26 | Recreation | 1965 |
| Edgewood Lake Upper Dam | Significant | Satisfactory | 19 | Recreation | 1955 |
| Beaver Dam Pond Dam | Significant | Satisfactory | 19 | Recreation | 1820 |
| Lake La Barr Dam | Significant | Satisfactory | 18 | Recreation | 1964 |
| Tennanah Lake Dam | Significant | Poor | 17 | Recreation | 1914 |
| Fred Katz Pond Dam | Significant | Not Rated | 17 | Recreation | 1961 |
| Tanzman Lake Dam | Significant | Poor | 17 | Recreation | 1950 |
| Orchard Lake Dam | Significant | Poor | 16 | Recreation | 1870 |
| Grossingers Lake Dam | Significant | Not Rated | 15 | Recreation | 1950 |
| Edgewood Lake Lower Dam | Significant | Poor | 15 | Recreation | 1945 |
| Camp Gan Israel Pond Dam | Significant | Fair | 15 | Recreation | 1952 |
| Silver Lake Dam | Significant | Not Rated | 14 | Water Supply | 1850 |
| Paramount Pond Dam | Significant | Poor | 13 | Recreation | 1947 |
| Gordon Dam | Significant | Not Rated | 12 | Recreation | 1938 |
| Nimrod Lake Dam | Significant | Poor | 12 | Recreation | |
| Coon Rock Rod And Gun Club Dam | Significant | Poor | 12 | Recreation | |
| Sidwell Lake Dam | Significant | Poor | 11 | Recreation | |
| Wurtsboro Hills Dam | Significant | Poor | 10 | Recreation | 1948 |
| Merriewold Lake Dam | Significant | Poor | 10 | Recreation | 1914 |
| Evans Dam | Significant | Fair | 10 | Recreation | 1900 |
| Turcos Dam | Significant | Poor | 10 | Recreation | 1931 |
| Holcomb Pond Dam | Significant | Not Rated | 10 | Recreation | 1933 |
| Groos Pond Dam | Significant | Poor | 10 | Flood Risk Reduction | 1940 |
| Cramer-reichman Dam | Significant | Poor | 9 | Recreation | 1930 |
| Silver Lake Dam | Significant | Fair | 8 | Recreation | |
| Rock Lake Dam | Significant | Not Rated | 7 | Recreation | 1960 |
| Treasure Lake Dam | Significant | Not Rated | 7 | Recreation | 1911 |
| Stump Pond Dam | Significant | Not Rated | 6 | Recreation | 1888 |
| Davis Pond Dam | Significant | Not Rated | 5 | Recreation | 1930 |
| Old Brodhead Lake Dam | Low | Not Rated | 33 | Recreation | 2005 |
| Hillside Pond Dam | Low | Not Rated | 32 | Recreation | 1995 |
| Lake Nityananda Dam | Low | Not Rated | 25 | Recreation | 1994 |
| Weiden Lake Dam | Low | Not Rated | 25 | Recreation | 1920 |
| Hust Pond Dam | Low | Not Rated | 23 | Recreation | 1911 |
| Matawa Lake Dam | Low | Not Rated | 22 | Water Supply | 1949 |
| Lebanon Lake Dam | Low | Not Rated | 20 | Recreation | 1926 |
| Wildwood Lake Dam | Low | Not Rated | 20 | Recreation | 1940 |
| Wildcat Dam | Low | Not Rated | 20 | Recreation | 1928 |
| Lenape Lake Dam | Low | Not Rated | 20 | Recreation | 1920 |
| Burnt Hope Dam | Low | Not Rated | 19 | Recreation | 1956 |
| Thunder View Farms Dam | Low | Not Rated | 19 | Fire Protection, Stock, Or Small Fish Pond | 1992 |
| Lincoln Farms Dam | Low | Not Rated | 19 | Fire Protection, Stock, Or Small Fish Pond | 1976 |
| Sunset Lake Dam | Low | Not Rated | 18 | Recreation | |
| Kabau Lake Dam | Low | Not Rated | 18 | Recreation | 1940 |
| Hull Pond Dam | Low | Not Rated | 18 | Recreation | 1925 |
| Adams Pond Dam (163-0204) | Low | Not Rated | 18 | Recreation | 1923 |
| Petrillo Lake Dam | Low | Not Rated | 17 | Recreation | 1952 |
| Lake Muskoday Dam | Low | Satisfactory | 17 | Recreation | 1925 |
| Buck Ridge Rod & Gun Club Dam | Low | Not Rated | 17 | Fire Protection, Stock, Or Small Fish Pond | 1988 |
| Mountaindale Recreation Lake Dam | Low | Not Rated | 16 | Recreation | 1973 |
| Trojan Lake Dam | Low | Not Rated | 16 | Recreation | 1930 |
| Stephen Crane Dam | Low | Not Rated | 15 | Recreation | 1850 |
| Mud Pond Dam | Low | Not Rated | 15 | Recreation | 1915 |
| Toronto Lake Dam | Low | Not Rated | 15 | Recreation | |
| Trout Lake Dam | Low | Not Rated | 15 | Recreation | 1920 |
| Balsam Pond Dam | Low | Not Rated | 15 | Recreation | 1958 |
| Twin Ponds Dam - Lower | Low | Not Rated | 15 | Recreation | |
| Waneta Lake Dam | Low | Not Rated | 14 | Recreation | 1992 |
| Evers Lake Dam | Low | Not Rated | 14 | Recreation | 1965 |
| Albert Pines Pond Dam | Low | Not Rated | 13 | Recreation | 1963 |
| Camp Shomria Dam | Low | Not Rated | 13 | Recreation | 1975 |
| Pine Lake Dam | Low | Not Rated | 13 | Recreation | |
| Kenoza Lake Dam | Low | Not Rated | 13 | Recreation | 1843 |
| Lochada Lake Dam | Low | Not Rated | 13 | Recreation | 1960 |
| Welmet Lake Dam | Low | Not Rated | 13 | Recreation | 1900 |
| Wasserlauf Dam | Low | Not Rated | 12 | Recreation | 1954 |
| Filippini Pond Dam | Low | Not Rated | 12 | Recreation | 1937 |
| Lake Uncas Dam | Low | Not Rated | 12 | Recreation | 1940 |
| Delaware Hunting Club Dam | Low | Not Rated | 12 | Recreation | |
| Timber Estates Dam | Low | Not Rated | 12 | Recreation | |
| Boniface Dam | Low | Not Rated | 12 | Recreation | 1970 |
| Hilldale Pond Dam | Low | Not Rated | 12 | Recreation | 1910 |
| Highland Field And Stream Club Inc Dam | Low | Not Rated | 12 | Other | 1986 |
| Fred Denman Lake Dam | Low | Not Rated | 12 | Recreation | 1954 |
| Gordon White Pond Dam | Low | Not Rated | 11 | Recreation | |
| Fred Meyer Dam And Dike | Low | Not Rated | 11 | Recreation | 1974 |
| Paul Kellam Pond Dam | Low | Not Rated | 11 | Recreation | |
| Turnpike Pond Dam | Low | Not Rated | 11 | Recreation | 1930 |
| Briscoe Lake Dam | Low | Not Rated | 11 | Recreation | 1828 |
| Melody Lake Dam | Low | Not Rated | 10 | Recreation | |
| Knickerbocker Pond Dam | Low | Not Rated | 10 | Recreation | 2006 |
| Howard Stewart Dam | Low | Not Rated | 10 | Recreation | |
| Black Lake Dam | Low | Not Rated | 10 | Flood Risk Reduction | 1917 |
| Kazens Pond Dam | Low | Not Rated | 10 | Recreation | 1950 |
| Morningside Lake Dam | Low | Not Rated | 10 | Recreation | 1945 |
| Lower Lake Metaugue Dam | Low | Not Rated | 10 | Recreation | 1960 |
| Monticello Hunting Club Dam | Low | Not Rated | 10 | Recreation | |
| Davies Lake Dam | Low | Not Rated | 10 | Recreation | 1956 |
| Dixie Lake Dam | Low | Not Rated | 10 | Recreation | 1930 |
| Mountain Lake Dam | Low | Not Rated | 10 | Recreation | 1928 |
| Blind Pond Dam | Low | Not Rated | 10 | Recreation | 1960 |
| Wells Pond Dam | Low | Not Rated | 10 | Recreation | 1929 |
| Wolf Reservoir Dam | Low | Not Rated | 10 | Recreation | 1890 |
| Gillman Pond Dam | Low | Not Rated | 9 | Recreation | 1914 |
| Joseph Lynch Pond Dam | Low | Not Rated | 9 | Recreation | 1962 |
| Fox Lake Dam | Low | Not Rated | 9 | Recreation | 1900 |
| Hunter Lake Dam | Low | Not Rated | 8 | Recreation | 1980 |
| Kiamesha Lake Dam | Low | Not Rated | 8 | Recreation | 1914 |
| Sherwood Allen Pond Dam | Low | Not Rated | 8 | Recreation | 1963 |
| Hartwood Club Dam | Low | Not Rated | 8 | Recreation | 1870 |
| Twin Ponds Dam Upper | Low | Not Rated | 8 | Recreation | |
| Crystal Lake Dam | Low | Not Rated | 8 | Recreation | 1920 |
| Lilly Pond Dam | Low | Not Rated | 8 | Water Supply | 1922 |
| Ruddick Pond Dam | Low | Not Rated | 8 | Recreation | 1910 |
| South Wind Lake Dam | Low | Not Rated | 8 | Recreation | 1960 |
| Jacob Miller Pond Dam | Low | Not Rated | 8 | Recreation | 1988 |
| Roedy Pond Dam | Low | Not Rated | 7 | Recreation | 1946 |
| Mallory Pond Dam | Low | Not Rated | 7 | Recreation | 1950 |
| Lake Superior Dam | Low | Not Rated | 7 | Recreation | 1920 |
| Camp Diana Dalmqua Pond Dam | Low | Not Rated | 7 | Recreation | |
| Lake Florence Dam | Low | Not Rated | 7 | Recreation | 1920 |
| Beaver Lake Dam | Low | Not Rated | 7 | Recreation | 1940 |
| Wolf Lake Inc Dam | Low | Not Rated | 7 | Recreation | 1940 |
| Ten Mile River Boy Scout Camp Dam | Undetermined | Not Rated | 9 | Recreation |