All rivers go somewhere, and these two monsters meet up right here. The Missouri River is officially 2,341 miles long and at this point, you can stand at its end and watch as its waters mingle with the mighty Mississippi. The Missouri is considered part of the Mississippi River Basin which represents over 40 percent of the drainage of the lower 48 states. It’s a unique perspective and a lot of water. Although the river beds have changed in two centuries, this is also the point where Meriwether Lewis and William Clark’s Corps…