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A Reader Responds....

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From Terry Stuck...

 Caveat Emptor, beware the Consultant paid to confirm your own conclusion, there must be a “man-made” root cause. The conclusion that erosion stopped 2-3000 years ago, right (show that data), and now due to dredging and erosion prevention has caused a loss in just two of the six (St. Clair is one too) Great Lakes should give all readers brain sprain.  There is a proven physics test that given a variety of vertical tubes of various heights and diameters (as the G.L’s) connected together, filled with water, the fill level is the same for them all.   This Law of Physics is wholly dismissed by the report saying the receiving lower Lake levels have not raised because “extra water moves so quickly through & over Niagara Falls, it has not raised the levels…appreciably.” Anybody notice the current in the Detroit River double in the last 2 decades?  When we were “sand-bagging” didn’t somebody pull the bathtub plug called the Chicago River and let those “28 Lake St. Clair's”+ slip into the Mississippi?  The answer is obvious, remove ALL man-made steel, concrete, Rip-Rap, water-locks,  retaining walls, etc. and let the shorelines fall into the lakes.  If that doesn’t full up Georgian Bay I suggest Michigan send all the Canadian garbage we are taking, back to Georgian Bay to dump in the middle, that will displace enough water to re-fill those wetlands Mother Nature has let dry.

 

Original Article...


Drain in Great Lakes is open, report says

A conservation group released a study Monday that claims a U.S. Army Corps of Engineers dredging project has punched an expanding “hole” in the upper Great Lakes that has plunged Lake Michigan’s long-term average water level by about a foot.  more...

 



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Mr. Stuck, I think that you need to review your physics as to how they apply to hydrology. Yeah your model works if all of the lakes are at the same elevation, and that the flow of water in between the lakes is for all intents and purposes is not limited. That is however is not the model of the Great Lakes. I would suggest you pick up a book on the design and flow calculations of weirs and related hydrological calculations, and then you might adjust your thinking. Beware of oversimplifications and their application to large systems. E. Hough1/27/2005 3:21:33 PM
rant
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