An ever-changing phenomenon From a scenic spring view above Chief Standing Bear Bridge near Niobrara, NE, to a sub-zero winter ice floe at Clay County Park west of Vermillion, the Missouri River is an ever-changing natural phenomenon. From a scenic spring view above Chief Standing Bear Bridge near Niobrara, NE, to a sub-zero winter ice floe at Clay County Park west of Vermillion, the Missouri River is an ever-changing natural phenomenon.
The river's course, however, has also changed due to man's impact � namely with the construction of dams.
Human involvement with the Missouri River is further illustrated by the recent release of the Army Corps of Engineers' draft plan that outlines its effort to alter the river's flow to protect three endangered species: the piping plover, pallid sturgeon and least tern.






