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Iowa State University

Agriculture and Environment Extension Publications

Water quality

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Reducing Nutrient Loss: Science Shows What Works, C. A. J. Thompson, Matthew J. Helmers, Thomas M. Isenhart, John D. Lawrence Sep 2014

Reducing Nutrient Loss: Science Shows What Works, C. A. J. Thompson, Matthew J. Helmers, Thomas M. Isenhart, John D. Lawrence

Agriculture and Environment Extension Publications

Iowa has been working for decades to protect and improve water quality. However, progress measured toward reduction targets at the watershed scale has been challenging, and many complex nutrient-related impacts in Iowa’s lakes, reservoirs, and streams remain to be addressed. The Iowa Nutrient Reduction Strategy is a science and technology-based framework to assess and reduce nutrients to Iowa waters and the Gulf of Mexico. It directs efforts to reduce nutrients in surface water from both point and nonpoint sources in a scientific, reasonable, and cost-effective manner.


A Guide To Managing Pasture Water: Streamside Buffers, Thomas M. Isenhart, John L. Kovar, James R. Russell Jun 2008

A Guide To Managing Pasture Water: Streamside Buffers, Thomas M. Isenhart, John L. Kovar, James R. Russell

Agriculture and Environment Extension Publications

By properly managing your pasture water, you not only provide high-quality water to maintain the health and productivity of livestock on your farm, but you also contribute to maintaining the water quality downstream – water that is used for livestock and human consumption, as well as recreational activities like fishing and swimming.

Pasture conditions that promote frequent gatherings of cattle near streams and ponds may increase sediment, nutrient and pathogen loading of these water sources from manure deposition, as well as bank erosion. However, such water-quality problems may be controlled by grazing management or pasture characteristics that alter the timing, frequency ...


Riparian Buffer Systems, Richard C. Schultz, Amy Kuehl, Joseph P. Colletti, Paul H. Wray, Thomas M. Isenhart Sep 1997

Riparian Buffer Systems, Richard C. Schultz, Amy Kuehl, Joseph P. Colletti, Paul H. Wray, Thomas M. Isenhart

Agriculture and Environment Extension Publications

Streams lined with tress, shrubs, grasses , and abundant wildlife contribute to more than a beautiful landscape. Restoration of the land's natural riparian buffer system can improve water quality. prevent soil erosion, and build diversity that has been lost with modem land uses.