Posted Oct 29, 2021, 3:30 AM
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look at us still talking
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Join Date: Jun 2018
Location: Loop, Chicago
Posts: 6,569
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Quote:
Originally Posted by Steely Dan
would the volume of water that's able to flow through a fully opened chicago river lock actually be enough to substantively move the needle on a body of water the size of lake huron-michigan? i don't think so.
i mean, at 45,000 sq. miles, it's by far THE largest freshwater lake on the planet in terms of surface area. to lower it by even just 1' you're talking about removing ~9.4 TRILLION gallons of water!!!
and the chicago river lock is like 80' wide and 20' deep, so 1,600 sq. feet. you'd need a flow rate of about 300,000 gallons/second (for an entire year mind you) through those 1,600 sq. feet to lower the lake by 1 foot, which seems impossible to me.
to put that into perspective, the flow rate of niagara falls is usually around 600,000 gallons/second, give or take for seasonal adjustments. and that's freaking niagara falls, an utterly gigantic waterfall, one of the largest on the planet.
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The lock on the calumet is much bigger no?
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