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The Importance of Groundwater in the North American Great Lakes Region
The North American Great Lakes constitute about 20 percent of the Earth’s unfrozen fresh surface water. Because the amount of surface water in the Great Lakes is so large, groundwater in the Great Lakes Basin is often overlooked when evaluating the hydrology of the region. It is, however, more significant than is generally recognized (Grannemann and others, 2000). This lesson is designed to illustrate how groundwater and surface water interact in this water-rich region and can be used as a guide to understanding the complexity of this interaction in other similar regions.
(Regional Spotlights- 1)
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