McNay Research and Demonstration Farm
Grazing management practices that allow cattle to congregate near pasture streams may result in the loss of vegetative cover, soil compaction, and accumulation of manure near the streams. These conditions may cause sediment, phosphorus, and pathogen loading of streams by direct deposition of feces or in precipitation runoff.
Iowa State University
Bear, Douglas Allen; Russell, James R.; Cho, Yong.-Il.; Ensley, Steven M.; and Yoon, Kyoung-Jin, "Incidence of Bovine Enterovirus, Coronavirus, and Group A Rotavirus, and Concentration of Total Coliforms in Midwestern Pasture Streams (Three-year Progress Report)" (2010). Iowa State Research Farm Progress Reports. 364.