Cost-effective management practices to improve water quality in the Stekoa Creek watershed
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Estimates form the Non Point Source Model of Better Assessment Science Integrating Point and Nonpoint Sources (BASINS) indicate that Stekoa Creek watershed is not currently meeting three Fecal coliform water quality standards for its fishing designated use. The first, daily 4000 Most Probable Number colonies/100 ml at any time standard, is exceeded 6% of the time. The second and third standards, 30-day geometric mean 1000 MPN col/100 ml (November –April) and 200 MPN col/100 ml (May and October), are exceeded all the time. The most cost-effective management practices to ameliorate this non-compliance consist of repairing leaking sewage pipes and limiting cattle access to the stream. These two practices contribute 80% and 12% to total simulated loading of Fecal coliform, respectively. For an investment of $128,975, this study predicts a full compliance with the first two standards, a partial compliance (28% exceedance) with the third standard, and a net increase in the recreational benefits of Chattooga River of $3,769,671 over 25 years.