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Keweenaw Bay
Two illustrated divers are superimposed onto a photograph showing a lake underwater.
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Horologist Roman Piekarski starts the time consuming task of adjusting the 600 antique clocks at Cuckooland Museum in readiness for this weekends change to British summer time on March 23, 2009 in Knutsford, England.
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Keweenaw Bay
Keweenaw Bay Keweenaw Bay, near L'Anse, southern Lake Superior, Michigan.

limnology

hydrology
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limnology, subsystem of hydrology that deals with the scientific study of fresh waters, specifically those found in lakes and ponds. The discipline also includes the biological, physical, and chemical aspects of the occurrence of lake and pond waters. Limnology traditionally is closely related to hydrobiology, which is concerned with the application of the principles and methods of physics, chemistry, geology, and geography to ecological problems.

Two illustrated divers are superimposed onto a photograph showing a lake underwater.
What's the Science Behind Spooky Lakes? With Geo RutherfordShipwrecks and mummies and toxic sludge, oh my!
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The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Meg Matthias.