NYPA Press Release

NYPA Announces Extended Release of Water Through Long Sault Dam

For Immediate Release: 6/4/19

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

MASSENA — The New York Power Authority (NYPA) is anticipating having to release water through the Long Sault Dam for the majority of the summer months and advises the public to use caution on the St. Lawrence River.

The spilling at Long Sault Dam takes place when NYPA and Ontario Power Generation are directed to pass required river flows by the International Lake Ontario St. Lawrence River Board (ILOSLRB) that are beyond the capacity of the Moses-Saunders power dam. Excess water is redirected through Long Sault dam to maintain planned river flows.  The release of water from Long Sault Dam could potentially take place into the month of August. 


Members of the public should:

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

Outflows from Lake Ontario are established by the 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 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 70 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.