Analysis of Suspended-Sediment Concentrations and Radioisotope Levels in the WildRice River Basin, Northwestern Minnesota, 1973-98

摘要

The study objectives were to: (1) analyze suspended-sediment concentrations atstream sites within the Wild Rice River Basin for possible relations to streamflow, seasonality, and long-term trends, and calculate sediment loads; (2) determine the relative importance of soil erosion versus streambank erosion as potential sources of sediment to the Wild Rice River, based on activities of the fallout radioisotopes lead-210 ((sup 210)Pb), cesium-137((sup 137)Cs), and, secondarily, Beryllium-7((sup 7)Be) in suspended sediments in transport and in potential sources.