Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
A BACTERIA TMDL FOR SHOAL CREEK USING SWAT MODELING AND DNA SOURCE TRACKING
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 035-040 in Total Maximum Daily Load (TMDL) Environmental Regulations–II Proceedings of the 8-12 November 2003 Conference (Albuquerque, New Mexico USA), Publication Date 8 November 2003. .(doi:10.13031/2013.15535)
Authors: C. Baffaut, V. W. Benson
Keywords: Watershed, Modeling, Bacteria, Fecal coliform, DNA source tracking, TMDL
A TMDL was developed for the Shoal Creek Watershed, a 365-km2 watershed in southwest
Missouri. The watershed consists of grazed or hayed pastures (89%) fertilized with poultry litter
and commercial nitrogen and some wooded areas (11%). The cattle roam freely through the
pastures year-round and we estimated that 25% of the pastures have direct access to the stream.
Potential sources of bacterial contamination were determined through DNA source tracking
technologies. The technology was used to quantify the bacteria contribution from poultry litter
spread on pastures, grazing cattle, wildlife, failing septic systems, and direct inputs such as cattle
standing in the streams or pipes discharging wastewater into the streams.