NYPA Press Release

NYPA Reminds Public to Be Aware of Changing Water Conditions on South Channel and Downstream of Dams on St. Lawrence River

For Immediate Release: 6/4/21

Contact:  Karen White |
Karen.white@nypa.gov | (315) 764-6863

MASSENA—The New York Power Authority (NYPA) reminds members of the public to be aware of the potential for changing water conditions on the St. Lawrence River during summer months.

During the summer months there is an increased potential for water to be released from the Long Sault Dam on the St. Lawrence River. The release of water could cause significant changes in water levels and flow speeds both upstream of Long Sault Dam and in the South Channel. Temporary signage posted along various locations near the South Channel are in place cautioning the public to be aware of changes to water conditions upstream and downstream of the power dam.

The installation of a new safety barrier later this summer on the upstream side of Long Sault Dam may also impact recreational boating on the river.

Members of the public, especially boaters and swimmers, should:

  • Always use caution on the river and along river banks
  • Keep back a minimum of 800 ft. along all the dams from the Iroquois Dam in Waddington to the Long Sault Dam spillway and Robert Moses Power Dam in Massena, both on the upstream and downstream sides of the dams
  • Be aware of changing river conditions and strong currents that could overpower a swimmer
  • Never swim alone and communicate boating plans and routes with family or friends.

Outflows from Lake Ontario are established on a weekly basis by the International Lake Ontario and St. Lawrence River Board (ILOSLRB). The Board, in conjunction with its staff, continues to monitor and reassess conditions on an ongoing basis. Information on hydrologic conditions, water levels and outflows, including graphics and photos, are available on the Board’s website and posted to the Board’s Facebook page at https://www.facebook.com/InternationalLakeOntarioStLawrenceRiverBoard (English). 

For more information on water flows visit: http://ijc.org/en_/islrbc

For more information on how NYPA manages needs for water and power production, please visit: https://www.youtube.com/watch?time_continue=23&v=13K_6oOcZXo

For more information on marine conditions, visit the Great Lakes St. Lawrence Seaway System website: http://www.greatlakes-seaway.com/en/  


About NYPA

NYPA is the largest state public power organization in the nation, operating 16 generating facilities and more than 1,400 circuit-miles of transmission lines. More than 80 percent of the electricity NYPA produces is clean renewable hydropower. NYPA uses no tax money or state credit. It finances its operations through the sale of bonds and revenues earned in large part through sales of electricity. For more information visit www.nypa.gov and follow us on Twitter @NYPAenergy, Facebook, Instagram, Tumblr and LinkedIn.