The Illinois State Water Survey has completed several reports since 1980 on sedimentation and sediment transport problems of the Kankakee River in Illinois and Indiana. The Kankakee River drains about 13,388 km2 of area, of which about 58 percent lies in Indiana and the rest in Illinois. The main stem of the Kankakee River in Indiana was channelized from about 1895 to 1918, and about 400 km of the river was reduced to about 145 to 153 km. This channelization has been associated with increased sediment load in Illinois. The present research evaluated magnitudes of bank erosion, historical changes in river geometries since 1959, and the 1978-1999 changes in in-channel sedimentation patterns. This research has shown that out of 359.8 river bank kilometers (includes both sides of the river), about 4.6 percent of the banks have severe erosion, 17.6 percent of the banks have moderate erosion, 31.7 percent of the banks have minor erosion, and 20.9 percent of the banks are protected, 20.7 percent of the banks are stable, and for 4.5 percent of the banks data are not available. The median diameter of the bed materials varied from 0.07 mm to 0.41 mm. Analyses of the long-term flows from six gaging stations in Illinois showed an increasing trend in flows through the 1960s, with no discernible increase since that time. Cross-sectional analyses of the river from the Kankakee Dam to the State Line Bridge showed some trends. The river reach from the Kankakee Dam to Aroma Park, known as the Six Mile Pool, has lost 13.4 percent of its capacity due to sediment deposition since 1980. The section of the river between Aroma Park and Singleton Ditch showed both scour and sediment deposition. In general, areas close to Aroma Park exhibited sediment deposition, and the middle reach experienced scour. The recurring sand bar at the State Line Bridge area contained about 6,495 m3 more sediment in 1999 than were measured in 1980. The river is accumulating sediments within Six Mile Pool and the Momence Wetland. The middle reach is in semi-equilibrium with some sediment accumulation at several areas. Several management alternatives, both in-channel and watershed-based, are suggested to assist in the reduction of sedimentation problems of the river. The Illinois State Water Survey has completed several reports since 1980 on sedimentation and sediment transport problems of the Kankakee River in Illinois and Indiana. The Kankakee River drains about 13,388 km2 of area, of which about 58 percent lies in Indiana and the rest in Illinois. The main stem of the Kankakee River in Indiana was channelized from about 1895 to 1918, and about 400 km of the river was reduced to about 145 to 153 km. This channelization has been associated with increased sediment load in Illinois. The present research evaluated magnitudes of bank erosion, historical changes in river geometries since 1959, and the 1978-1999 changes in-channel sedimentation patterns. This research has shown that out of 359.8 river bank kilometers (includes both sides of the river), about 4.6 percent of the Banks have severe erosion, 17.6 percent of the banks have moderate erosion, 31.7 percent of the banks have minor erosion, and 20.9 percent of the banks are protected, 20.7 p ercent of the banks are stable, and for 4.5 percent of the banks data are not available. The median diameter of the bed materials varied from 0.07 mm to 0.41 mm. Analyzes of the long-term flows from six gaging stations in Illinois showed an increasing trend in flows through the 1960s, with no discernible increase since that time. Cross-sectional analyzes of the river from the Kankakee Dam to the State Line Bridge showed some trends. The river reach from the Kankakee Dam to Aroma Park, known as the Six Mile Pool, has lost 13.4 percent of its capacity due to sediment deposition since 1980. The section of the river between Aroma Park and Singleton Ditch showed both scour and sediment deposition. In general, areas close to Aroma Park exhibiting sediment deposition, and the middle reach experienced scour. The recurring sand bar at the State Line Bridge area contained about 6,495 m3 more sediment in 1999 than were measured in 1980. The river is accumulating sediments within Six Mile Pool and the Momence Wetland. The middle reach is in semi-equilibrium with some sediment accumulation at several areas. Several management alternatives, both both in-channel and watershed-based, are suggested to assist in the reduction of sedimentation problems of the river.