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 1251–1275 of 1,871
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Norfolk Dam St. Lawrence County | 29 | 1965 | High | Not Rated |
| Normanskill Albany County | 39 | 1916 | High | Fair |
| North Division Street Dam Cayuga County | 32 | 1865 | Significant | Not Rated |
| North Lake A Dam (Spillway) Herkimer County | 15 | 1850 | Low | Not Rated |
| North Lake B Dam Herkimer County | 35 | 1850 | Low | Not Rated |
| North Lake C Dam Herkimer County | 27 | 1850 | Low | Not Rated |
| North Lake Dam Westchester County | 32 | 1936 | High | Satisfactory |
| North Pond Dam Essex County | 15 | 1913 | Low | Not Rated |
| Northumberland Dam Washington County | 16 | 1870 | Low | Not Rated |
| Northville Reservoir Dam Fulton County | 40 | 1929 | Low | Not Rated |
| Northville Water Supply Dam Hamilton County | 25 | 1940 | Low | Not Rated |
| North Woods Dam #2 Ulster County | 18 | 1984 | Low | Not Rated |
| Norwich Reservoir #1 Dam Chenango County | 47 | 1881 | High | Poor |
| Norwich Reservoir #2 Dam Chenango County | 56 | 1890 | High | Poor |
| Norwich Ymca Recreation Pond Dam Chenango County | 39 | 1970 | Significant | Poor |
| Norwood St. Lawrence County | 24 | 1928 | High | Fair |
| Nuclear Lake Dam Dutchess County | 24 | 1936 | High | Not Available |
| Nunda Water Supply Dam Livingston County | 26 | 1962 | Low | Not Rated |
| Nye Farm Pond Dam Madison County | 21 | — | Low | Not Rated |
| Nys Atomic Development Dam #1 Cattaraugus County | 95 | 1963 | Low | Not Rated |
| Nys Atomic Development Dam #2 Cattaraugus County | 45 | 1963 | Low | Not Rated |
| Oakley Swamp Wildlife Pond Dam Tioga County | 8 | 1952 | Low | Not Rated |
| Oak Orchard Creek Dam Orleans County | 90 | 1917 | High | Satisfactory |
| Oakridge Land & Property Corp Dam Westchester County | 10 | 1981 | Low | Not Rated |
| Oatka Creek Dam Genesee County | 12 | — | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.