Dams in New York
1,873
Total Dams
420
High Hazard
22.42%
% High Hazard
89.2 yrs
Average Age
Counties
| County | Dams | High Hazard | % High | Avg Age |
|---|---|---|---|---|
| Westchester | 90 | 36 | 40.00% | 99.3 yrs |
| Orange | 114 | 33 | 28.95% | 103.3 yrs |
| Broome | 61 | 23 | 37.70% | 57.6 yrs |
| Putnam | 61 | 22 | 36.07% | 92.6 yrs |
| St. Lawrence | 64 | 19 | 29.69% | 89.4 yrs |
| Sullivan | 131 | 14 | 10.69% | 91.5 yrs |
| Dutchess | 80 | 14 | 17.50% | 90.2 yrs |
| Monroe | 31 | 14 | 45.16% | 83.6 yrs |
| Albany | 39 | 14 | 35.90% | 91.1 yrs |
| Saratoga | 36 | 13 | 36.11% | 93.8 yrs |
| Rockland | 32 | 13 | 40.63% | 95.8 yrs |
| Cattaraugus | 40 | 12 | 30.00% | 64.8 yrs |
| Rensselaer | 35 | 10 | 28.57% | 109.9 yrs |
| Oneida | 38 | 10 | 26.32% | 104.6 yrs |
| Chenango | 45 | 10 | 22.22% | 80.0 yrs |
| Herkimer | 42 | 10 | 23.81% | 109.4 yrs |
| Clinton | 22 | 9 | 40.91% | 99.2 yrs |
| Onondaga | 22 | 9 | 40.91% | 89.2 yrs |
| Warren | 36 | 8 | 22.22% | 92.5 yrs |
| Chemung | 12 | 8 | 66.67% | 60.1 yrs |
| Oswego | 34 | 7 | 20.59% | 99.9 yrs |
| Ulster | 42 | 7 | 16.67% | 87.5 yrs |
| Delaware | 54 | 7 | 12.96% | 70.9 yrs |
| Fulton | 29 | 7 | 24.14% | 100.6 yrs |
| Schoharie | 31 | 7 | 22.58% | 99.2 yrs |
| Greene | 28 | 7 | 25.00% | 68.2 yrs |
| Madison | 29 | 6 | 20.69% | 111.4 yrs |
| Tioga | 23 | 5 | 21.74% | 68.0 yrs |
| Lewis | 32 | 5 | 15.63% | 91.5 yrs |
| Chautauqua | 24 | 5 | 20.83% | 78.1 yrs |
| Hamilton | 26 | 4 | 15.38% | 87.9 yrs |
| Steuben | 35 | 4 | 11.43% | 64.6 yrs |
| Tompkins | 14 | 4 | 28.57% | 80.8 yrs |
| Otsego | 34 | 3 | 8.82% | 82.1 yrs |
| Cortland | 17 | 3 | 17.65% | 68.6 yrs |
| Erie | 25 | 3 | 12.00% | 67.1 yrs |
| Niagara | 10 | 3 | 30.00% | 96.8 yrs |
| Schuyler | 10 | 3 | 30.00% | 73.2 yrs |
| Allegany | 16 | 2 | 12.50% | 83.7 yrs |
| Cayuga | 12 | 2 | 16.67% | 103.8 yrs |
| Livingston | 12 | 2 | 16.67% | 79.8 yrs |
| Ontario | 10 | 2 | 20.00% | 81.8 yrs |
| Essex | 45 | 2 | 4.44% | 82.9 yrs |
| Seneca | 4 | 2 | 50.00% | 116.8 yrs |
| Wayne | 12 | 2 | 16.67% | 95.3 yrs |
| Montgomery | 12 | 2 | 16.67% | 111.8 yrs |
| Orleans | 15 | 2 | 13.33% | 91.2 yrs |
| Columbia | 34 | 2 | 5.88% | 82.6 yrs |
| Wyoming | 25 | 1 | 4.00% | 72.2 yrs |
| Franklin | 25 | 1 | 4.00% | 97.7 yrs |
| Nassau | 6 | 1 | 16.67% | 116.5 yrs |
| Yates | 9 | 1 | 11.11% | 70.1 yrs |
| Washington | 26 | 1 | 3.85% | 109.0 yrs |
| Richmond | 4 | 1 | 25.00% | 109.0 yrs |
| Schenectady | 9 | 1 | 11.11% | 92.9 yrs |
| Jefferson | 34 | 0 | 0.00% | 96.1 yrs |
| Suffolk | 15 | 0 | 0.00% | 117.9 yrs |
| Genesee | 16 | 0 | 0.00% | 77.1 yrs |
Purpose Breakdown
Tallest Dams in New York
| Dam Name | Height | County | Hazard |
|---|---|---|---|
| Mount Morris Dam | 215 ft | Livingston | High Hazard |
| Ashokan Dam | 213 ft | Ulster | High Hazard |
| Downsville Dam | 204 ft | Delaware | High Hazard |
| Merriman Dam | 195 ft | Ulster | High Hazard |
| Neversink Reservoir Dam | 190 ft | Sullivan | High Hazard |
| Gilboa Dam | 183 ft | Schoharie | High Hazard |
| Cannonsville | 175 ft | Delaware | High Hazard |
| New Croton Reservoir Dam | 174 ft | Westchester | High Hazard |
| Kensico Dam | 168 ft | Westchester | High Hazard |
| Lewiston | 155 ft | Niagara | High Hazard |