Larry Rutschke and Zack Hillman, U.S. Geological Survey, hydrological technicians, measures the flow of water June 1 In preparation for possible flooding, as airmen from Minot Air Force Base, North Dakota National Guard as well as many other organizations, are setting up secondary dikes along the river. The Souris River threatens to break the levies already in place, thousands of Minot citizens, including military members, their families and DoD civilians, have been forced to evacuate the area.