Meg B. Plona
Amie M. G. Brady
2009
<p><span>During the recreational season of 2008 (May through August), a regression model relating turbidity to concentrations of </span><i>Escherichia coli</i><span> </span><i>(E. coli)</i><span> was used to predict recreational water quality in the Cuyahoga River at the historical community of Jaite, within the present city of Brecksville, Ohio, a site centrally located within Cuyahoga Valley National Park. Samples were collected three days per week at Jaite and at three other sites on the river. Concentrations of </span><i>E. coli</i><span> were determined and compared to environmental and water-quality measures and to concentrations predicted with a regression model. Linear relations between </span><i>E. coli</i><span> concentrations and turbidity, gage height, and rainfall were statistically significant for Jaite. Relations between </span><i>E. col</i><span>i concentrations and turbidity were statistically significant for the three additional sites, and relations between </span><i>E. col</i><span>i concentrations and gage height were significant at the two sites where gage-height data were available. The turbidity model correctly predicted concentrations of </span><i>E. coli</i><span> above or below Ohio’s single-sample standard for primary-contact recreation for 77 percent of samples collected at Jaite.</span></p>
application/pdf
10.3133/ofr20091192
en
U.S. Geological Survey
Relations between environmental and water-quality variables and Escherichia coli in the Cuyahoga River with emphasis on turbidity as a predictor of recreational water quality, Cuyahoga Valley National Park, Ohio, 2008
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