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 |
|---|---|---|---|---|
| Great Patchogue Lake Dam Suffolk County | 11 | 1917 | Low | Not Rated |
| Grassy Sprain Reservoir Dam Westchester County | 40 | 1876 | High | Satisfactory |
| Grassi-Corini-Grandolf Dam Cortland County | 15 | 1973 | Low | Not Rated |
| Grasse River Dam St. Lawrence County | 13 | 1881 | Low | Not Rated |
| Granby Oswego County | 15 | 1926 | Significant | Satisfactory |
| Graffenburg Reservoir Dam Herkimer County | 55 | 1854 | Significant | Poor |
| Gowan & Ward Rec Pond Dams A & B Tioga County | 20 | 1971 | Low | Not Rated |
| Gouverneur St. Lawrence County | 7 | 1925 | Significant | Satisfactory |
| Gouldtown - Mill 5 East Channel Lewis County | 10 | 1991 | Low | Satisfactory |
| Gould Paper CO Dam Lewis County | 9 | 1938 | Low | Not Rated |
| Gossweyler Lake Dam Sullivan County | 10 | 1931 | Significant | Not Rated |
| Goshen Reservoir #2 Dam Orange County | 30 | 1933 | Low | Not Rated |
| Goshen Reservoir #1 Dam Orange County | 37 | 1963 | High | Poor |
| Gorton Pond Dam Oneida County | 9 | 1915 | Low | Not Rated |
| Gore Mt Reservoir Dam Warren County | 32 | 1920 | Significant | Not Rated |
| Gordon White Pond Dam Sullivan County | 11 | — | Low | Not Rated |
| Gordon Dam Sullivan County | 12 | 1938 | Significant | Not Rated |
| Gooseneck Reservoir Dam Essex County | 10 | 1951 | Low | Not Rated |
| Goodnow Flowage Dam Essex County | 25 | — | Low | Not Rated |
| Goey Pond Dam Otsego County | 7 | 1900 | Low | Not Rated |
| Godfreys Pond Dam Genesee County | 20 | 1860 | Low | Not Rated |
| Glenwood Lake Dam Orleans County | 31 | 1903 | High | Satisfactory |
| Glenwood Lake Dam Westchester County | 12 | — | Significant | Poor |
| Glens Falls Warren County | 16 | 1916 | Significant | Satisfactory |
| Glenn Lake Dam Chenango County | 43 | 1965 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.