Geography 2011A/B Chapter Notes - Chapter 3: Sea Lamprey, Typha, Ruffe
17 Dec 2016
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The great lakes are the largest surface freshwater system on earth. Thirty million people live in the great lakes basin: 30% of canadian population and 10% of the us. Physical features of the great lakes: from west to east. Span over 1200 km/750 miles: they provide 21% of the world fresh water. A(cid:374)d (cid:373)ake up 84% of a(cid:373)erica"s fresh water. Great lakes basin: encompasses large parts of both canada and the us. Most of the inflow comes from the detroit river: the rest comes from rain, snow and other rivers, most of the land area is urban and agricultural. With a population of over 11. 6 million. With a population over 50 000: the lake is divided into three different basins that virtually function as different lakes. Central and eastern thermally starify each year. Meaning they layer their water: warmer less dense water overlies a colder denser layer, most affected by industrialized farming.
