Dams in Rockland County, New York
32Total Dams
12High Hazard
17Significant
Dam Safety in Rockland County, New York
Rockland County has 32 dams tracked in the National Inventory of Dams. Of these, 12 are classified as high hazard — meaning failure would probably cause loss of human life. Another 17 carry a significant hazard classification. Currently, 20 dams have a condition assessment of poor or unsatisfactory.
The average dam in Rockland County is 95 years old. The most common purpose is recreation. The tallest dam is First Reservoir Dam at 46 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| First Reservoir Dam | High | Poor | 46 | Water Supply | 1917 |
| Lake Deforest Dam | High | Satisfactory | 40 | Water Supply | 1956 |
| Lake Welch Dam | High | Poor | 32 | Recreation | 1937 |
| Lake Sebago Dam | High | Poor | 30 | Recreation | 1925 |
| Tivoli Lake Dam | High | Poor | 29 | Recreation | 1908 |
| Potake Lake Dam | High | Satisfactory | 22 | Recreation | 1800 |
| Lake Kanawauke Dam | High | Fair | 20 | Recreation | 1918 |
| Lake Boyce Dam | High | Fair | 16 | Recreation | 1929 |
| Lake Lucille Dam | High | Poor | 13 | Recreation | 1935 |
| Central Nyack Dam | High | Satisfactory | 12 | Flood Risk Reduction | 2012 |
| Pine Grove Lake Dam | High | Poor | 12 | Recreation | 1968 |
| Congers Lake Dam | High | Satisfactory | 8 | Recreation | 1892 |
| Doodletown Dam | Significant | Poor | 34 | Recreation | 1976 |
| Second Reservoir Dam | Significant | Poor | 32 | Water Supply | 1928 |
| Garnerville Dam | Significant | Fair | 29 | Other | 1875 |
| Ibm Edcenter Dam A | Significant | Satisfactory | 26 | Other | 1989 |
| Third Reservoir Spillway And Dam | Significant | Poor | 25 | Water Supply | 1946 |
| Christie Brook Dam #1 | Significant | Satisfactory | 25 | Recreation | 1934 |
| Pine Meadow Lake Dam | Significant | Poor | 20 | Recreation | 1934 |
| Lake Suzanne Dam | Significant | Poor | 19 | Recreation | 1986 |
| Schwartz Estate Pond Dam 6 | Significant | Poor | 17 | Flood Risk Reduction | |
| Stony Point Dam | Significant | Poor | 16 | Water Supply | 1900 |
| Rockland Print Co Dam #2 | Significant | Poor | 15 | Irrigation | 1875 |
| John Patrick Pond Dam | Significant | Poor | 13 | Recreation | 1955 |
| Henrich Pond Dam | Significant | Poor | 10 | Other | 1960 |
| Wesley Chapel Dam #2 | Significant | Poor | 10 | Recreation | |
| Tomkins Cove Dam | Significant | Poor | 8 | Irrigation | 1915 |
| Wesley Chapel Dam #1 | Significant | Poor | 7 | Recreation | |
| Tivoli Lake Spillway | Significant | Poor | 5 | Recreation | 1908 |
| Christie Brook Dike | Low | Not Rated | 25 | Recreation | 1934 |
| Pine Meadow Brook Dam | Low | Not Rated | 22 | Recreation | 1935 |
| Breakneck Pond Dam | Low | Not Rated | 20 | Recreation | 1930 |