Dams in St. Lawrence, New York

64
Total Dams
19
High Hazard
11
Significant
89.4 yrs
Avg Age
Hazard Name Height
Dam Name Hazard Height Built Type State
Long Sault St. Lawrence High Hazard 104 ft 1958 Concrete New York
Piercefield St. Lawrence High Hazard 22 ft 1914 Concrete New York
Higley St. Lawrence High Hazard 37 ft 1925 Gravity New York
Massena Intake St. Lawrence High Hazard 115 ft 1958 Concrete New York
Five Falls St. Lawrence High Hazard 53 ft 1954 Gravity New York
Ogdensburg St. Lawrence High Hazard 12 ft 1910 Gravity New York
Norwood St. Lawrence High Hazard 24 ft 1928 Gravity New York
Allens Falls St. Lawrence High Hazard 37 ft 1991 Concrete New York
Blake St. Lawrence High Hazard 80 ft 1957 Concrete New York
Norfolk Dam St. Lawrence High Hazard 29 ft 1965 Concrete New York
Browns Falls St. Lawrence High Hazard 69 ft 1922 Concrete New York
Flat Rock St. Lawrence High Hazard 67 ft 1925 Concrete New York
South Colton St. Lawrence High Hazard 42 ft 1954 Gravity New York
East Norfolk St. Lawrence High Hazard 16 ft 1928 Gravity New York
Colton St. Lawrence High Hazard 29 ft 1919 Gravity New York
Newton Falls Upper St. Lawrence High Hazard 21 ft 1927 Concrete New York
Rainbow St. Lawrence High Hazard 82 ft 1956 Gravity New York
Cranberry Lake St. Lawrence High Hazard 19 ft 1917 Gravity New York
Carry Falls Spillway St. Lawrence High Hazard 76 ft 1953 Gravity New York
Benson Mines Little River Dam St. Lawrence Significant Hazard 44 ft 1948 Earth New York
Gouverneur St. Lawrence Significant Hazard 7 ft 1925 Concrete New York
Niagara Mohawk Power Dam St. Lawrence Significant Hazard 11 ft 1916 Concrete New York
South Edwards St. Lawrence Significant Hazard 48 ft 1914 Concrete New York
Hailsboro Mill #3 Dam St. Lawrence Significant Hazard 16 ft 1910 Buttress New York
Hollow Dam St. Lawrence Significant Hazard 31 ft 1987 Concrete New York
Heuvelton St. Lawrence Significant Hazard 19 ft 1923 Concrete New York
Iroquois St. Lawrence Significant Hazard 67 ft 1958 Concrete New York
Hailesboro Mill #6 Dam St. Lawrence Significant Hazard 14 ft — Concrete New York
Stark Falls Dike G St. Lawrence Significant Hazard 10 ft 1957 Rockfill New York
Hailesboro #4 Plant Dam St. Lawrence Significant Hazard 12 ft 1912 Concrete New York
Pyrites Intake St. Lawrence Low Hazard 27 ft 1908 Concrete New York
Yaleville St. Lawrence Low Hazard 12 ft 1914 Concrete New York
Emeryville St. Lawrence Low Hazard 25 ft 1959 Gravity New York
Fowler #7 - Dam No. 1 St. Lawrence Low Hazard 25 ft 1928 Concrete New York
Hannawa St. Lawrence Low Hazard 34 ft 1902 Gravity New York
Talcville St. Lawrence Low Hazard 13 ft 1987 Gravity New York
Potsdam - West Dam St. Lawrence Low Hazard 11 ft 1990 Concrete New York
Hewittville St. Lawrence Low Hazard 18 ft 1870 Concrete New York
Potsdam - East Dam St. Lawrence Low Hazard 7 ft 1903 Masonry New York
Twin Lakes Dam St. Lawrence Low Hazard 7 ft — Timber Crib New York
Eli Sochia Dam St. Lawrence Low Hazard 10 ft — Earth New York
Chaumont Swamp Dam St. Lawrence Low Hazard 100 ft 1954 Rockfill New York
Benson Mines Plant Dam St. Lawrence Low Hazard 38 ft — Earth New York
Mill Dam St. Lawrence Low Hazard 12 ft 1916 Concrete New York
Grasse River Dam St. Lawrence Low Hazard 13 ft 1881 Rockfill New York
Newton Falls Stabilization Pond #3 Dam St. Lawrence Low Hazard 22 ft 1965 Earth New York
Bog River Dam St. Lawrence Low Hazard 28 ft 1904 Buttress New York
Chapman Dam St. Lawrence Low Hazard 16 ft 1971 Concrete New York
Upper & Lower Lakes Dam #1 St. Lawrence Low Hazard 12 ft 1970 Earth New York
Massena Diversion Dam St. Lawrence Low Hazard 35 ft 1912 Concrete New York