New York Dams
1,871 dams tracked by the National Inventory of Dams
Total Dams
1,871
High Hazard
419
22.4%
Poor / Unsatisfactory
289
Average Age
89 yrs
Hazard Classification
High419 (22.4%)
Significant544 (29.1%)
Low901 (48.2%)
Condition Assessment
Satisfactory348 (18.6%)
Fair98 (5.2%)
Poor / Unsatisfactory289 (15.4%)
Not Rated1,136 (60.7%)
Federal
26
State
281
Local
506
Private
785
Tallest Dams
- Mount Morris Dam249 ft
- Ashokan Dam213 ft
- Downsville Dam204 ft
- Merriman Dam195 ft
- Neversink Reservoir Dam190 ft
High Hazard Dams
- Mount Morris DamHigh
- Ashokan DamHigh
- Downsville DamHigh
- Merriman DamHigh
- Neversink Reservoir DamHigh
Poor Condition Dams
- Inghams DamPoor
- Toronto Unsatisfactory
- Mill Brook Site 2 DamPoor
- Sidney Reservoir #5 DamPoor
- 60 Foot DamPoor
All Dams in New York
Showing 26–50 of 278
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Tivoli Lake Dam Rockland County | 29 | 1908 | High | Poor |
| Tillson Lake Dam Ulster County | 39 | 1930 | High | Poor |
| Third Reservoir Spillway and Dam Rockland County | 25 | 1946 | Significant | Poor |
| Teatown Lake Dam Westchester County | 10 | 1928 | Significant | Poor |
| Tarrytown Waterworks Dam Westchester County | 18 | 1897 | High | Poor |
| Tannersville Reservoir #3 Dam Greene County | 17 | 1957 | Significant | Poor |
| Tanglewood Lake Dam Delaware County | — | 1980 | Significant | Poor |
| Tamarack Pond Dam Orange County | 12 | — | Significant | Poor |
| Swan Lake Dam Westchester County | 34 | 1933 | High | Poor |
| Summit Lake Dam and Dike Westchester County | 15 | 1992 | Significant | Poor |
| Stump Pond Dam Cortland County | 15 | 1928 | High | Poor |
| Still Lake Dam Westchester County | 16 | 1930 | High | Poor |
| Stephen Blodgett Pond Dam Dutchess County | 17 | 1953 | Significant | Poor |
| Steele Reservoir Dam Saratoga County | 64 | 1907 | Significant | Poor |
| State University College At Oswego Dam Oswego County | 8 | 1963 | Low | Poor |
| Stamford Reservoir Dam Schoharie County | 28 | 1893 | Significant | Poor |
| Staatsburg Water CO Dam Dutchess County | 10 | 1908 | Significant | Poor |
| Spruce Lake Dam Herkimer County | 18 | 1897 | Significant | Poor |
| Spring Lake Dam Westchester County | 20 | 1895 | Significant | Poor |
| Sphagnum Pond Dam Orange County | 15 | 1930 | Significant | Poor |
| Spencers Lake Dam Tioga County | 30 | 1977 | Significant | Poor |
| South Westchester Detention Basin Dam Westchester County | 7 | 1978 | Significant | Poor |
| South Lake Dam (Upper) Putnam County | 12 | 1921 | Significant | Poor |
| South Lake Dam (Middle) Putnam County | 12 | 1921 | Significant | Poor |
| South Lake Dam (Lower) Putnam County | 12 | 1921 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.