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 951–975 of 1,871
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Larchmont Dam Westchester County | 10 | 1925 | Significant | Poor |
| Larchmont Water Company Dam #2 Westchester County | 31 | 1935 | High | Poor |
| Larchwood Lake Dam Otsego County | 36 | 1969 | High | Satisfactory |
| Larkin Creek Dam Monroe County | 13 | 1977 | High | Satisfactory |
| Larrabee Dam Fulton County | 13 | 1985 | Low | Not Rated |
| Larry Halloran Pond Dam Onondaga County | 22 | 1963 | Low | Not Rated |
| Launt Pond Dam Delaware County | 14 | 1938 | Low | Not Rated |
| Laurel Lake Dam Delaware County | 9 | — | Low | Not Rated |
| Lauren Hopkins Dam Cayuga County | 12 | 1976 | Low | Not Rated |
| Lazio Pond Dam Delaware County | 18 | 1975 | Low | Not Rated |
| Lebanon Lake Dam Sullivan County | 20 | 1926 | Low | Not Rated |
| Ledge Pond Dam Dutchess County | 31 | 2003 | Low | Not Rated |
| Leeds Pond Dam Nassau County | 10 | 1908 | Low | Not Rated |
| Leeward Lake Dam Wayne County | 16 | — | Significant | Not Rated |
| Lefferts Grist Mill Dam Suffolk County | 8 | 1800 | Low | Not Rated |
| Lehigh Valley Dam Seneca County | 26 | 1895 | Low | Not Rated |
| Leisurewood Campground Dam Erie County | 7 | — | Significant | Not Rated |
| Leland Pond Dam Madison County | 15 | 1836 | Significant | Fair |
| Leland Ryder Lake Dam Putnam County | 21 | 1965 | Low | Not Rated |
| Leland Ryder Recreation Pond Dam Dutchess County | 17 | 1968 | Low | Not Rated |
| Lenape Lake Dam Sullivan County | 20 | 1920 | Low | Not Rated |
| Lens Lake Dam Warren County | 12 | 1959 | Significant | Not Rated |
| Leo A Yeier Recreational Pond Dam Tioga County | 19 | 1969 | Low | Not Rated |
| Leon Kramnich Wildlife Dam Chenango County | 7 | 1955 | Low | Not Rated |
| Leroy Denbesten Pond Dam Columbia County | 21 | 1980 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.