The water on the Mississippi River is already so high that Missouri has closed Interstate Highways. Governor Jay Nixon has called in the National Guard to help protect residents and property. The floods from weekend rains only stand to get worse. All of the water from the Mississippi will join the Ohio, Red and Arkansas Rivers and together will flow toward some of the most densely packed industrial river fronts in the country. Companies that could be impacted are Dow Chemical (DOW), Archer Daniels Midland (ADM), and Valero Energy (VLO). Those companies use the rivers to ship their energy and agricultural products out to the Gulf of Mexico. Barges on the Mississippi handle about 60 percent of U.S. grain exports entering the Gulf of Mexico through New Orleans, as well as 22 percent of its petroleum and 20 percent of its coal.