The eighth Mississippi Water Resources Conference was held in Vicksburg on April 10-11, 1973, pertaining to water resources. The 9 papers included in this report are: Nitrogen, phosphorus and other chemicals in sediments from reservoirs in North Mississippi; sediment yield estimates based on floodwater measurements and samples; environmental aspects of watershed planning; response of the Lower Mississippi River to changes in valley slope, sinuosity and water temperature; mathematical modeling of water quality; multiple outlet selective withdrawal technique for water quality prediction of lake releases; monitoring nutrient losses from small water sheds; look, no clarifier; and treatment of domestic sewage at offshore locations.