Occurrence of dissolved solids, nutrients, atrazine, and fecal coliform bacteria during low flow in the Cheney Reservoir watershed, south-central Kansas, 1996

Abstract

Occurrence of Dissolved Solids, Nutrients, Atrazlne, snd Fecal Collform Bscterls During Low Flow In the Cheney Reservoir Watershed, South-Central Ksnsas, 1996

Regression relations and long-term water-quality constituent concentrations, loads, yields, and trends in the North Fork Ninnescah River, south-central Kansas, 1999–2019

“…Point sources of nutrients include municipal and industrial wastewater effluent and storm sewer discharge; nonpoint sources include livestock, crop fertilizers, and urban runoff. Nutrients in the Cheney Reservoir drainage basin generally originate from nonpoint sources and are likely related to agriculture (Christensen and Pope, 1997). Cheney Reservoir is listed as an impaired waterbody under section 303(d) of the Federal Clean Water Act for eutrophication, resulting from excess total nitrogen and TP (Kansas Department of Health and Environment, 2015b).…”

“…Occasional taste-and-odor events have occurred at Cheney Reservoir since the onset of sampling efforts in 2001 (Graham and others, 2017). Initial studies determined subbasin sources of contaminants, chemical loading into and out of Cheney Reservoir, changes in reservoir sediment quality over time, and drainage basin sources of phosphorus (for example, Christensen and Pope, 1997;Pope and Milligan, 2000;Pope and others, 2002). Later studies focused on real-time computations of water-quality constituent concentrations and mass transport from the drainage basin and the description of reservoir conditions that may result in the occurrence of cyanobacteria and associated compounds (for example, Christensen and others, 2006;Stone and others, 2013a, b;Graham and others, 2017).…”