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30 Year Historical Trends in Coralville Reservoir Water Quality
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Paper number 701P0904, . (doi: 10.13031/2013.17428)
Authors: Claudia O. Espinosa-Villegas1*, Dr. Craig L. Just2 Dr. Jerald L. Schnoor1
Iowas water resources are perhaps its single most valuable natural asset, yet the number of water bodies and river miles impaired by nutrients and siltation has increased in the last years. With agriculture as the leading industry in Iowa, yet a major contributor to water resources degradation, it is difficult to protect our water resources without negative economic and social impacts to farmers. In watersheds that are primarily agricultural, it has been estimated that over 80% of the total nitrogen added in to the watershed comes from commercial fertilizers use related to agriculture. Many times, the amounts of in-stream nutrients can be correlated to the land-use of the watershed.(Download PDF) (Export to EndNotes)