With no signs of receding
“Water levels have always fluctuated on
the Great Lakes, but the recent extreme seesawing, particularly on the upper
lakes—Superior, Michigan, and Huron—is unprecedented in the century that
records have been kept (see charts). Michigan and Huron, which are linked and
share the same level, stood at record highs in August, 84 cm above their
historic average. The two lakes bottomed out at record lows in 2013. Although a
relatively modest 25 cm above average, Superior in 2020 was just 5 cm below its
record peak for August set a year ago.”
-- Physics Today, October 2020 issue
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