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 1101–1125 of 1,871
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Massapequa Lake Dam Nassau County | 11 | 1890 | Low | Not Rated |
| Massawippa Lake Dam Orange County | 22 | 1934 | Low | Not Rated |
| Massena Diversion Dam St. Lawrence County | 35 | 1912 | Low | Not Rated |
| Massena Intake St. Lawrence County | 118 | 1958 | High | Satisfactory |
| Massena Village Dam St. Lawrence County | 8 | 1860 | Low | Not Rated |
| Matawa Lake Dam Sullivan County | 22 | 1949 | Low | Not Rated |
| Mattice Pond Dam Schoharie County | 16 | 1970 | Low | Not Rated |
| Max O Urbahn Dam Franklin County | 14 | 1972 | Low | Not Rated |
| Maybees Waste Weir Dam Niagara County | 21 | 1918 | Significant | Not Rated |
| Mayer Pond Dam Dutchess County | 20 | 1967 | Significant | Fair |
| Mayfield Dam Fulton County | 36 | 1930 | Low | Not Rated |
| Mayham Pond Dam Schoharie County | 11 | 1813 | Low | Not Rated |
| Mccagg Dam Columbia County | 24 | 1965 | Low | Not Rated |
| Mcconnellsville Dam Oneida County | 12 | 1914 | Low | Not Rated |
| Mcdole Mill Pond Dam Orange County | 7 | — | Significant | Not Rated |
| Mcgregor Dam Clinton County | 37 | 1968 | High | Not Rated |
| Mckenzie Pond Dam Essex County | 7 | — | Low | Not Rated |
| Mckinley Mall Retention Pond Dam Erie County | 25 | 1985 | High | Poor |
| M C Whatmore Lake Dam Westchester County | 17 | 1964 | Significant | Not Rated |
| Mead Reservoir Dam Clinton County | 60 | 1922 | High | Satisfactory |
| Mechanicville Rensselaer County | 26 | 1900 | Significant | Satisfactory |
| Mechanicville Reservoir Dam Saratoga County | 33 | 1892 | High | Fair |
| Medina Aqueduct Dam Orleans County | 21 | 1967 | Significant | Not Rated |
| Medway Dam Greene County | 30 | 1967 | Significant | Not Rated |
| Meizinger Pond Dam Columbia County | 38 | — | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.