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 126–150 of 278
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Mckinley Mall Retention Pond Dam Erie County | 25 | 1985 | High | Poor |
| Mason Farm Pond Dam Columbia County | 15 | 1965 | Significant | Poor |
| Martin Dunham Reservoir Dam Rensselaer County | 59 | 1913 | High | Poor |
| Mamaroneck Reservoir Dam Westchester County | 19 | 1928 | High | Poor |
| Main Mill Dam Clinton County | 25 | 1881 | High | Poor |
| Macghee Dam Dutchess County | 10 | 1953 | Significant | Poor |
| Lyon Lodge Dam Ulster County | 12 | 1925 | Significant | Poor |
| Lusk Reservior Orange County | 30 | 1895 | High | Poor |
| Lower Reservoir Dam Madison County | 31 | 1882 | Significant | Poor |
| Lower Cornelius S Smith Dam Delaware County | 15 | 1959 | Significant | Poor |
| Loughberry Lake Dam Saratoga County | 30 | — | High | Poor |
| Lotus Lake Dam Suffolk County | 6 | 1980 | Significant | Poor |
| Loon Lake Dam Warren County | 15 | 1941 | High | Poor |
| Long Pond Dam Chenango County | 17 | 1900 | High | Poor |
| Long Pond Dam Westchester County | 40 | 1936 | Significant | Poor |
| Lock E-4 Embankment Dam Saratoga County | 34 | 1915 | High | Poor |
| Lock 33 Dam Erie Canal Monroe County | 40 | 1908 | High | Poor |
| Lock 32 Dam Erie Canal Monroe County | 40 | 1908 | High | Poor |
| Lock 24 Dam Erie Canal Onondaga County | 21 | 1908 | High | Poor |
| Loch Lyall Dam Putnam County | 11 | 1950 | Significant | Poor |
| Larchmont Water Company Dam #2 Westchester County | 31 | 1935 | High | Poor |
| Larchmont Dam Westchester County | 10 | 1925 | Significant | Poor |
| Lake Welch Dam Rockland County | 32 | 1937 | High | Poor |
| Lake Valhalla Dam Putnam County | 19 | 1928 | Significant | Poor |
| Lake Te-Ata Dam Orange County | 60 | 1927 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.