Abstract |
The results of a reconnaissance run of the Mississippi River in the Iowa area to determine the effect that poorly treated or untreated wastes, especially sewage, has on the Mississippi is presented. Biological and chemical oxygen demand samples were collected for analysis from 55 sampling points along the Mississippi River tributaries in the vicinity of Dubuque, Iowa. Field measurements and observations along with physical observations and measurements were recorded. Potential sources of pollution were observed and recorded, and the sampling areas were photographed. The Mississippi shore line was inspected for industrial and domestic waste outfalls. Bottom samples were collected at various points. |