Global warming activists sometimes claim that a harm of global warming is reduced fresh water supplies. As noted in the passage quoted below, the Great Lakes, the world’s greatest reserve of fresh water, are now at record or near-record levels.
(p. A3) Record and near-record water levels in all five Great Lakes are resulting in tens of millions of dollars in damage from Minnesota to New York as eroding shorelines and monster waves cause homes to plummet into the water, public piers and lakeside trails to crack and crumble, and parks and properties to flood.
The high levels come after several years of above-average rains and snowfall in the region. Last year was the wettest on record for the Great Lakes and the second wettest across the continental U.S., according to federal data. Forecasts from the U.S. Army Corps of Engineers show the elevated lake levels persisting through at least July.
Lakes Huron and Michigan set record lows in early 2013—an unprecedented swing, said 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. “My eyes are open right now that water levels may continue to swing like that,” he said, but the question needs more study to make better predictions about what might happen next.
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(Note: the online version of the story has the date February 20, 2020, and has the title “On Rising Great Lakes, Backyards Are Disappearing Overnight.”)