levels in lakes Superior, Michigan-Huron remain well below
The Sault Star
The August water supply for Lakes Superior and Michigan-Huron
were well below average for the month. Lake Superior is
about 28 centimetres below its long-time average beginning-of-September
level and about 11 centimetres below the level recorded
Lake Superior fell one centimetre in August compared
to a normal increase of one centimetre.
The lake is now eight centimetres above its chart datum
The level of Lakes Michigan-Huron fell by six centimetres
in August. That is three centimetres more than usual.
The level of Lakes Michigan-Huron is about 58 centimetres
below its long-term average beginning of September level
and is now about 31 centimetres below the level recorded
Lakes Michigan-Huron is now one centimetre below its
chart datum level, but 23 centimetres above its record
low beginning of September level.
The International Lake Superior Board of Control has
decreased the lake’s outflow to 2,010 cubic metres per
second for September.
That outflow compares to 2,110 cubic metres per second
The outflow will be released by discharging approximately
1,890 cubic metres per second through the three hydropower
plants and passing most of the remaining flow through
the control structure at the head of the St. Mary’s Rapids.
The gate setting of the control structure will be maintained
at the existing setting equivalent to one-half gate open,
according to a press release issued by the International
Lake Superior Board of Control.
There will be no change to the setting of Gate No. 1
that supplies the fishery remedial works.