Estimated fecal coliform bacteria concentrations using near real-time continuous water-quality and streamflow data from five stream sites in Chester County, Pennsylvania, 2007–16

Estimating metal concentrations with regression analysis and water-quality surrogates at nine sites on the Animas and San Juan Rivers, Colorado, New Mexico, and Utah

“…Regression models would allow communities and tribes to evaluate the potential for elevated metal concentrations in the Animas and San Juan Rivers on a continuous and nearly real-time basis. Although numerous studies have used water-quality surrogates to predict suspended sediment concentrations, nutrients, and bacterial counts (Rasmussen and others, 2009;Schilling and others, 2017;Senior, 2017), relatively few studies have investigated their use for predicting metal concentrations in rivers (Nasrabadi and others, 2016;Aulenbach and others, 2017).…”