Sugar Island, located in St.
Wind
Humidity
Lawrence, New York, is a private hydroelectric dam on the Raquette River completed in 1925. Owned privately, the dam stands 35 feet tall with a length of 256 feet and a storage capacity of 432 acre-feet. The dam is classified as a gravity type, constructed with concrete and a multi-arch core on rock foundation.
Operated under the jurisdiction of the Federal Energy Regulatory Commission, Sugar Island Dam serves the primary purpose of generating hydroelectric power, with a maximum discharge capacity of 15,500 cubic feet per second. Despite its low hazard potential, the dam undergoes regular inspections, with the last one conducted in May 2019. The dam's emergency action plan was last revised in January 2021, indicating a commitment to safety and risk management. Sugar Island Dam presents an intriguing blend of historical significance and modern energy production within the beautiful natural landscape of the Raquette River.
Year Completed |
1925 |
Dam Length |
256 |
Dam Height |
35 |
River Or Stream |
Raquette River |
Primary Dam Type |
Gravity |
Surface Area |
29 |
Drainage Area |
994 |
Nid Storage |
432 |
Outlet Gates |
Tainter (radial) - 2 |
Hazard Potential |
Low |
Foundations |
Rock |
Nid Height |
35 |
Raquette River At South Colton Ny
|
360cfs |
W Br St. Regis R Nr Parishville Ny
|
211cfs |
Raquette River At Raymondville Ny
|
2060cfs |
Grass River At Chase Mills Ny
|
1350cfs |
St. Regis River At Brasher Center Ny
|
534cfs |
Oswegatchie River Near Heuvelton Ny
|
1250cfs |