35Total Dams
10High Hazard
12Significant
Dam Safety in Rensselaer County, New York
Rensselaer County has 35 dams tracked in the National Inventory of Dams. Of these, 10 are classified as high hazard — meaning failure would probably cause loss of human life. Another 12 carry a significant hazard classification. Currently, 12 dams have a condition assessment of poor or unsatisfactory.
The average dam in Rensselaer County is 109 years old. The most common purpose is recreation. The tallest dam is Tomhannock Reservoir Dam at 68 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Tomhannock Reservoir Dam | High | Satisfactory | 68 | Water Supply | 1905 |
| Martin Dunham Reservoir Dam | High | Poor | 59 | Recreation | 1913 |
| Bradley Lake Dam | High | Fair | 50 | Recreation | 1859 |
| Wright Lake Dam | High | Fair | 46 | Recreation | 1861 |
| Black River Pond Dam | High | Fair | 42 | Recreation | 1935 |
| Johnsonville | High | Satisfactory | 39 | Hydroelectric | 1909 |
| Quackenderry Creek Dam | High | Satisfactory | 17 | Flood Risk Reduction | 2002 |
| Mill Pond Dam | High | Poor | 12 | Recreation | 1918 |
| Long Pond Dam | High | Satisfactory | 9 | Recreation | 1918 |
| Second Pond Dam | High | Fair | 9 | Recreation | 1975 |
| Mechanicville | Significant | Satisfactory | 26 | Hydroelectric | 1900 |
| Hoosac School Dam | Significant | Poor | 25 | Recreation | 1950 |
| Kane Dam | Significant | Poor | 25 | Recreation | 1923 |
| Rail Joint Mill Dam | Significant | Poor | 25 | Irrigation | 1903 |
| Burden Lake Dam | Significant | Poor | 24 | Recreation | 1916 |
| Hastings Power Dam | Significant | Poor | 22 | Hydroelectric | 1920 |
| Dyken Pond Dam | Significant | Poor | 20 | Recreation | 1914 |
| Glass Lake Dam | Significant | Fair | 18 | Recreation | 1916 |
| Faith Mills Lower Dam | Significant | Poor | 18 | Hydroelectric | 1930 |
| Van Derheyden Reservoir Dam | Significant | Poor | 14 | Recreation | 1868 |
| Nassau Lake Dam | Significant | Poor | 10 | Recreation | 1792 |
| Lock 4 - Stillwater | Significant | Satisfactory | 5 | Hydroelectric | 1955 |
| Schaghticoke | Low | Satisfactory | 28 | Hydroelectric | 1909 |
| Lake Lorraine Dam | Low | Not assessed | 26 | Recreation | 1973 |
| Deep Kill Dam | Low | Not assessed | 25 | Recreation | 1898 |
| Hoosick Falls Dam | Low | Not assessed | 22 | Hydroelectric | 1890 |
| Wager Dam | Low | Not assessed | 19 | Recreation | 1939 |
| James Thompson | Low | Satisfactory | 19 | Hydroelectric | 1927 |
| Lake Elizabeth Dam | Low | Not assessed | 18 | Recreation | 1950 |
| Burden Pond Dam | Low | Not assessed | 17 | Recreation | 1942 |
| Smith Pond Dam | Low | Not assessed | 12 | Recreation | 1939 |
| Ida Lake Dam | Low | Poor | 12 | Recreation | 1912 |
| Babcock Lake Dam | Low | Not assessed | 9 | Recreation | 1978 |
| Clinton Heights Storage Dam | Low | Not assessed | 8 | Other | 1925 |
| Cranberry Pond Dam | Low | Not assessed | 7 | Recreation | 1800 |