NYPA News Release

NYPA to Release Water at Long Sault Dam Beginning Monday, March 12

Members of the Public Warned to Stay Off Ice in South Channel and Downstream of Dams


For Immediate Release:  3/9/2018

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


MASSENA—The gates at Long Sault Dam are now open to spill water in the St. Lawrence River. This spill will result in rapidly changing river flows and potentially unsafe ice conditions downstream of the dam and along the South Channel of the river. Members of the public, including those ice fishing on the river or channel, should be alert to rapidly changing ice conditions and should stay off the ice. See flier for a map detailing affected areas.

  • A warning siren at the Long Sault Dam will sound just prior to the start of spilling and before any flow changes through the dam. Temporary signage will be posted along various locations near the South Channel to inform the public that water is being released from the Long Sault Dam. 

Members of the public should:

  • Use caution on the river
  • Keep back a minimum of 800 ft. from the Long Sault Dam spillway and Robert Moses Power Dam, both on the upstream and downstream side
  • Be aware of changing river conditions and strong currents

The spilling will take place during maintenance outages of a generating unit at both NYPA and Ontario Power Generation. Spilling activities could take place through Friday, March 23.

Actual outflows will depend on conditions in the St. Lawrence River. This spill action will not affect the total river flows. 

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). 


About NYPA:

NYPA is the nation's largest state public power organization, through the operation of its 16 generating facilities and more than 1,400 circuit-miles of transmission lines. 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. More than 70 percent of the electricity NYPA produces is clean renewable hydropower. For more information visit www.nypa.gov and follow us on Twitter @NYPAenergy, Facebook, Instagram, Tumblr, and LinkedIn.