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 526–550 of 901
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lock E9 Rotterdam Junction Schenectady County | 15 | 1910 | Low | Not Rated |
| Long Lake Park Dam Hamilton County | 13 | 1934 | Low | Not Rated |
| Long Marsh Dam Genesee County | 11 | 1964 | Low | Not Rated |
| Long Pond Dam Oswego County | 14 | 1937 | Low | Not Rated |
| Lost Lake Dam & Dike Putnam County | 10 | 1977 | Low | Not Rated |
| Louis Dunckel Dam Chenango County | 21 | 1963 | Low | Not Rated |
| Lower Lake Dam Suffolk County | 12 | 1940 | Low | Not Rated |
| Lower Lake Metaugue Dam Sullivan County | 10 | 1960 | Low | Not Rated |
| Lower Lake Nimham Dam Putnam County | 16 | 1968 | Low | Not Rated |
| Lows Lake Dam St. Lawrence County | 21 | 1903 | Low | Not Rated |
| Lucky Star Lake Dam Jefferson County | 13 | 1951 | Low | Not Rated |
| Lyle Harwood Recreational Pond Dam Cattaraugus County | 13 | 1967 | Low | Not Rated |
| Lyle Underwood W L Pond #2 Dam & Dike Cattaraugus County | 7 | 1954 | Low | Not Rated |
| Lyonsdale - Dam No. 2 Lewis County | 9 | 1935 | Low | Satisfactory |
| Lyons Falls - Mill 3 Lewis County | 10 | 1922 | Low | Satisfactory |
| Lyons Pond Dam Madison County | 14 | 1917 | Low | Not Rated |
| Macomb Franklin County | 32 | 1904 | Low | Satisfactory |
| Madawaska Pond Dam Franklin County | 7 | — | Low | Not Rated |
| Madison Reforestation #13 Pond Dam #1 Madison County | 15 | 1960 | Low | Not Rated |
| Mahstedt Reservoir Dam Westchester County | 15 | 1885 | Low | Not Rated |
| Mallard Lake Dam Westchester County | 11 | 1939 | Low | Not Rated |
| Mallory Pond Dam Sullivan County | 7 | 1950 | Low | Not Rated |
| Mance Pond Dam Delaware County | 12 | 1991 | Low | Not Rated |
| Maple Lake Dam Herkimer County | 12 | 1905 | Low | Not Rated |
| Marcy Reservoir Dam Oneida County | 32 | 1919 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.