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 251–275 of 419
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Ischua Creek Watershed Dam #2 Cattaraugus County | 42 | 1961 | High | Satisfactory |
| Ischua Creek Watershed Dam #1 Cattaraugus County | 27 | 1964 | High | Satisfactory |
| Irvington Water Works Dam Westchester County | 20 | 1900 | High | Satisfactory |
| Inghams Dam Fulton County | 125 | 1911 | High | Poor |
| Indian Lake Stone Dam Hamilton County | 47 | 1898 | High | Poor |
| Indian Brook Reservoir Dam Westchester County | 43 | 1889 | High | Satisfactory |
| Ilion Reservoir #3 Dam Herkimer County | 76 | 1921 | High | Fair |
| Ilion Reservoir #2 Dam Herkimer County | 60 | 1903 | High | Not Rated |
| Ilion Reservoir #1 Dam Herkimer County | 40 | 1895 | High | Satisfactory |
| Hunter Mountain Lake Dam Greene County | 19 | 1993 | High | Satisfactory |
| Honk Falls Dam Ulster County | 42 | 1898 | High | Poor |
| Holimont Upper Reservoir Dam Cattaraugus County | 35 | 2003 | High | Satisfactory |
| Hoffman Creek Dam Chemung County | 36 | 1871 | High | Poor |
| Hinckley Herkimer County | 83 | 1914 | High | Satisfactory |
| Hillview Reservoir Dam Westchester County | 90 | 1915 | High | Not Rated |
| Higley St. Lawrence County | 37 | 1925 | High | Satisfactory |
| Higinbotham Brook Watershed Dam Madison County | 53 | 1978 | High | Satisfactory |
| Highland Park Reservoir Dam Monroe County | 28 | 1875 | High | Satisfactory |
| Highland Lake Dam Orange County | 30 | 1920 | High | Fair |
| High Falls - Intake Structure Clinton County | 34 | 1917 | High | Satisfactory |
| High Dam Oswego County | 35 | 1928 | High | Fair |
| Hempstead Lake Dam Nassau County | 24 | 1873 | High | Poor |
| Hemlock Lake Dam Livingston County | 12 | 1926 | High | Satisfactory |
| Helderberg Lake Dam Albany County | 35 | 1944 | High | Fair |
| Harwood Lake Dam Cattaraugus County | 22 | 1963 | High | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.