34Total Dams
7High Hazard
11Significant
Dam Safety in Oswego County, New York
Oswego County has 34 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 11 carry a significant hazard classification. Currently, 5 dams have a condition assessment of poor or unsatisfactory.
The average dam in Oswego County is 99 years old. The most common purpose is hydroelectric. The tallest dam is Lighthouse Hill at 47 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Lighthouse Hill | High | Fair | 47 | Hydroelectric | 1930 |
| Bennetts Bridge | High | Fair | 35 | Hydroelectric | 1914 |
| High Dam | High | Fair | 35 | Hydroelectric | 1928 |
| Minetto Lock & Dam 5 | High | Fair | 23 | Hydroelectric | 1915 |
| Bennetts Bridge - Dike B | High | Satisfactory | 13 | Hydroelectric | 1914 |
| Bennetts Bridge - Dike C | High | Satisfactory | 10 | Hydroelectric | 1914 |
| Waterbury Roadway Embankment | High | Satisfactory | 5 | Hydroelectric | 1914 |
| Cedar Lake Dam | Significant | Poor | 15 | Recreation | 1985 |
| Pulaski Dam | Significant | Poor | 15 | Recreation | 1918 |
| Granby | Significant | Satisfactory | 15 | Hydroelectric | 1926 |
| Varick Lock & Dam 7 | Significant | Satisfactory | 14 | Hydroelectric | 1926 |
| Sage Pond Dam | Significant | Satisfactory | 13 | Recreation | 1957 |
| Upper Fulton Lock & Dam 2 | Significant | Fair | 13 | Hydroelectric | 1927 |
| Mosher Dam | Significant | Satisfactory | 12 | Other | 1937 |
| Phoenix Lock & Dam No. 1 | Significant | Satisfactory | 11 | Hydroelectric | 1914 |
| Hannibal Dam | Significant | Fair | 10 | Fire Protection, Stock, Or Small Fish Pond | 1907 |
| Sharps Pond Dam | Significant | Poor | 10 | Recreation | 1910 |
| Mallory Dam | Significant | Not assessed | 6 | Recreation | 1909 |
| Autumn Lake Dam | Low | Not assessed | 28 | Recreation | 1971 |
| City of Oswego Dam | Low | Not assessed | 21 | Hydroelectric | 1956 |
| Roland Foster Dam | Low | Not assessed | 19 | Other | 1964 |
| Whitney Pond Dam | Low | Not assessed | 17 | Fish and Wildlife Pond | 1938 |
| Caughdenoy Dam | Low | Not assessed | 15 | Navigation | 1909 |
| Cody Pond Dam | Low | Not assessed | 14 | Hydroelectric | |
| Long Pond Dam | Low | Not assessed | 14 | Other | 1937 |
| Carterville Dam | Low | Not assessed | 14 | Recreation | 1840 |
| Wiltse Dam | Low | Not assessed | 13 | Recreation | |
| Chase Dam | Low | Not assessed | 10 | Recreation | 1910 |
| Kasoag Lake Dam | Low | Poor | 10 | Recreation | 1820 |
| Russ Mills Dam | Low | Not assessed | 9 | Recreation | 1912 |
| Slippery Corners Dam | Low | Not assessed | 9 | Other | 1959 |
| Frederick Britton Wildlife Marsh Dam | Low | Not assessed | 9 | Other | 1952 |
| State University College at Oswego Dam | Low | Poor | 8 | Other | 1963 |
| Earl Mitchelson Dam | Low | Not assessed | 7 | Other | 1958 |