Sand and fine sediments (silt and clay) are intermittently stored in the Le Sueur River floodplain during transport to the Minnesota River. Our modeling efforts will be directed towards understanding sediment residence time in the channel and floodplain, taking into account grain-size dependent sediment transport and river meander migration rates. Contrary to most river systems, the Le Sueur River appears to be storing more fine sediment in the upper reaches and coarser sediment in the lower reaches.