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Mississippi River, Pike County, Missouri, 55455-0237, United States of America (39.54825 -91.15363)
The uppermost lock and dam on the Upper Mississippi River is the Upper St. Anthony Falls Lock and Dam in Minneapolis. Above the dam, the river's elevation is 799 feet (244 m). Below the dam, the river's elevation is 750 feet (230 m). This 49-foot (15 m) drop is the largest of all the Mississippi River locks and dams. The origin of the dramatic drop is a waterfall preserved adjacent to the lock under an apron of concrete. Saint Anthony Falls is the only true waterfall on the entire Mississippi River. The water elevation continues to drop steeply as it passes through the gorge carved by the waterfall.
Fort Leonard Wood, Pulaski County, Missouri, 65473, United States of America (37.70114 -92.16933)
Coordinates: 37.60522 -92.24955 37.79802 -92.04109 - Minimum elevation: 227 m - Maximum elevation: 433 m - Average elevation: 324 m
Dr. Edmund A. Babler Memorial State Park, Hillside Drive, Centaur, Wildwood, Saint Louis County, Missouri, 63005, United States of America (38.62197 -90.69636)
Coordinates: 38.60226 -90.71565 38.64171 -90.67109 - Minimum elevation: 133 m - Maximum elevation: 266 m - Average elevation: 191 m