From Michigan
where I've lived
since 1977,
we all know
water levels
of the
surrounding
Great Lakes
will vary
every year.
Unusually
low or high
water levels
are usually
blamed on
"climate
change".
High water
levels
in 2019.
Low water
levels
in 2013.
When water
levels
were low,
National Geographic
had an article titled:
"Down the Drain,
The Incredible
Shrinking
Great Lakes",
with the notation:
“The Great Lakes
hold a fifth of Earth’s
surface fresh water,
and they’ve shrunk
dramatically.
If it keeps up,
shipping and
fisheries
could be left
high and dry.”
The Wall Street Journal
recently had an article
titled:
“Rising Great Lakes Pose Peril”
“Drew Gronewold,
an associate professor
at the University
of Michigan’s School
for Environment and
Sustainability.
He said the
warming climate
is exacerbating
both precipitation
and evaporation,
the two main forces
affecting lake levels.”
The U of M
associate
professor
is clueless:
National Oceanic
and Atmospheric
Administration
( NOAA )
historical records
( 1918 to 2019 )
show there have been
periods of equally
high water levels
and abrupt water level
changes in the past:
https://www.glerl.noaa.gov/data/dashboard/GLWLD.html
Abrupt changes from
high-to-low water
that happened between
1929 and 1934, and
between 1952 and 1959,
were just like the “abrupt”
change cited in the WSJ
article between 2013 and 2019.