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This component of the Minnesota River Assessment Project was intended to identify and quantify nonpoint sources of pollution from major and minor watersheds.

This Extension Service publication discusses the higher levels of sediment load found in the Minnesota River when compared to the St. Croix and Mississippi, identifying the differences among the rivers (e.g., vegetation, agricultural activity, and soil texture) that contribute to this disparity. Recommendations are provided for tillage and manure practices that may reduce sediment runoff.

This booklet discusses phophorus pollution of the Minnesota River. Designed for use by the general public, it provides basic information on current phosphorus levels, point and nonpoint pollution sources, and various ongoing efforts to respond to the problem.

This component of the Minnesota River Assessment Project was designed to assess nonpoint pollution sources of sediment and nutrients in ten agricultural watersheds within the Blue Earth, Watonwan, and Le Sueur river subbasins. The report includes a discussion of water quality, modeling methods used in the study, pollutant comparisons among watersheds, study findings, recommendations for conservation tillage and nutrient management practices, and future study needs. Detailed analyses of each watershed are appended.