March 18, 2002
peaking and ponding
in St. Marys River for one year
The International Joint Commission (IJC)
has decided to extend the authority for Edison Sault
Electric Company and Great Lakes Power Ltd to conduct
peaking and ponding operations in the St. Marys River, under
the supervision of the International Lake Superior Board of
Control (the Board of Control), until March 20, 2003.
The IJC made this decision after
considering the February 28, 2002 report of its Board of
Control and public comment. It has asked its Board of
Control to undertake further investigations over the next
year and provide a written report by the end of 2002. The
IJC will review the authority provided for peaking and
ponding prior to the start of the 2003 navigation season,
taking into account the board’s report, additional
operational experience, any further studies and the status
of dredging activities in the St. Marys River.
In light of its decision to extend
authority for peaking and ponding for an additional year,
the IJC has deferred, at this time, consideration of the
applications from the two power companies for authority to
conduct peaking and ponding activities.
Peaking and ponding operations are carried
out by the Edison Sault Electric Company and Great Lakes
Power Limited to store water during times of off-peak demand
and increase hydroelectric power generation during times of
on-peak demand. Peaking is the variation of hourly flows
within the daily average flow while ponding is the variation
of daily flows within the weekly average flow (i.e. higher
weekday flows and lower weekend flows).
The International Joint Commission is an
international organization established by the Boundary
Waters Treaty of 1909 to prevent and resolve disputes over
the use of waters shared by the United States and Canada.
More information is available on the IJC’s website at: