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We went fishing for your answer with a search on "deepest lake United States." The very first result, from About.com's Geography section, asserted in a straightfoward, indisputable manner that Crater Lake in Oregon is the deepest lake in the United States at 1,932 feet (589 meters). The United States Geological Survey (USGS) confirmed this fact in their Science Challenge, which answers fascinating questions about earth and planetary science. We learned that the lake is located in a caldera formed approximately 7,700 years ago by the eruption
and subsequent collapse of Mount Mazama, a volcano in the Cascade Range. A specific search on "Crater Lake" flooded us with results, which we picked through carefully. From the National Park Service site, we studied the history of the lake and park and uncovered other lake facts. We also found a page about the bathymetry of the lake -- here you can view maps of the lake floor. If you prefer a more interactive experience, there's even a QuickTime fly-by of Crater Lake. Just for curiosity's sake we also
searched on "deepest lake world." The honor is held by Lake Baikal in Siberia. It measures 5,315 feet (1,620 meters) deep.
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