The report describes and presents the findings of a survey of meat-packing house wastes discharged to the Missouri River at Omaha, Nebraska, during the period November 30 to and including December 12, 1964. The objective of the study was to secure data on the volume and characteristics of the wastes to the Monroe Street and South Omaha sewerage system. An evaluation of the pollution, particularly in terms of coliform bacteria, grease, solids, and oxygen demand, is included because of the decision to continue discharge of paunch manure and accompanying wastes to the city sewers. Grease quantities were measured because of experience of detrimental effects upon downstream water uses, including the St. Joseph, Missouri, municipal water treatment plant. The operation of the Omaha-Missouri River sewage treatment plant was reviewed.