Physical Changes - Navigation Traffic on Illinois and Upper Mississippi Rivers Bhowmik, N. G., D. Soong, J. R. Adams, R. Xia, and B. S. Mazumder. 1998. Physical changes associated with navigation traffic on the Illinois and Upper Mississippi Rivers. Prepared by Illinois State Water Survey for U.S. Geological Survey, Environmental Management Technical Center, Onalaska, Wisconsin, July 1998. LTRMP 98-S001. 205 pp. (NTIS #PB98-167760) ABSTRACT This report summarizes the investigation conducted by the Illinois State Water Survey on the physical changes associated with the movement of navigation traffic on the Illinois and Upper Mississippi Rivers. This research project was partially funded by the Environmental Management Technical Center of the U.S. Geological Survey and the U.S. Army Corps of Engineers. Project activities were conducted through the Illinois Department of Natural Resources. Research results have also been presented at technical society meetings and published in a number of journals. KEYWORDS Barge traffic, current, draw down, Illinois River, Mississippi River, navigation traffic, return velocity, sediment resuspension, suspended sediment, turbidity, water quality