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 676–700 of 1,871
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hemlock Lake Dam Westchester County | 8 | — | Low | Not Rated |
| Hemlock Lake Dam Sullivan County | 27 | 1890 | Significant | Not Rated |
| Hempstead Lake Dam Nassau County | 24 | 1873 | High | Poor |
| Henderson Lake Dam Essex County | 19 | 1900 | Low | Not Rated |
| Henrich Pond Dam Rockland County | 10 | 1960 | Significant | Poor |
| Henry Becker Dam Wyoming County | 23 | 1960 | Low | Not Rated |
| Henry Becker Pond Dam Wyoming County | 27 | 1973 | Low | Not Rated |
| Herkimer Herkimer County | 12 | 1922 | Low | Satisfactory |
| Herrings Jefferson County | 25 | 1924 | Low | Satisfactory |
| Herr Pond Dam Allegany County | 29 | 1956 | Significant | Not Rated |
| Hessian Lake Dam Orange County | 9 | — | Low | Not Rated |
| Heukrath Wetland Dam Broome County | 8 | 2000 | Low | Not Rated |
| Heuvelton St. Lawrence County | 35 | 1923 | Significant | Satisfactory |
| Hewittville St. Lawrence County | 18 | 1870 | Low | Satisfactory |
| H F Meyers Dam & Dikes Tioga County | 11 | 1965 | Low | Not Rated |
| Hickory Lake Dam Erie County | 9 | 1990 | Significant | Not Rated |
| High Dam Oswego County | 35 | 1928 | High | Fair |
| High Falls Ulster County | 30 | 1935 | Low | Satisfactory |
| High Falls Dam At Copenhagen Lewis County | 25 | 1909 | Significant | Not Rated |
| High Falls - Dike No. 2 Lewis County | 10 | 1925 | Low | Satisfactory |
| High Falls - Intake Structure Clinton County | 34 | 1917 | High | Satisfactory |
| Highland Falls #2 Dam Orange County | 30 | 1909 | Significant | Not Rated |
| Highland Field and Stream Club INC Dam Sullivan County | 12 | 1986 | Low | Not Rated |
| Highland Glens INC Dam Site #2 Wyoming County | 17 | 1966 | Low | Not Rated |
| Highland Lake Dam Orange County | 30 | 1920 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.