What is the largest freshwater source in the US?

Lawrence River watershed is one of the world's largest freshwater ecosystems. It contains about 84 percent of all the freshwater in North America, and is also home to about 30 million people. The watershed makes up lands in both the United States and Canada.



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At 1,943 feet (592 meters), Crater Lake is the deepest lake in the United States and one of the deepest in the world. The depths were first explored thoroughly in 1886 by a party from the U.S. Geological Survey.

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