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The Sixth Great Lake is Under Your Feet
It’s natural to stand on the shoreline of one of the Great Lakes and admire their vastness and majesty. But another abundant water resource in the basin is out of sight and rarely commands such appreciation. That’s groundwater. Between 20-40 percent of the water budget of the lakes (the total water flowing in and out of the system) originates as groundwater. Without this unseen water, the Great Lakes would be dramatically different from those we know. Strengthening public appreciation of and public policy protecting groundwater is a fundamental part of Great Lakes stewardship.