Brian J. Klager
Andrew C. Ziegler
Mandy L. Stone
2019
<p><span>This fact sheet describes water quality and geochemistry of the Little Arkansas River and</span> <i>Equus</i><span> Beds aquifer during 2001 through 2016 as part of the City of Wichita’s </span><i>Equus</i><span> Beds aquifer storage and recovery project in south-central Kansas. The</span> <i>Equus</i><span> Beds </span>aquifer storage and recovery<span> project was developed to help meet future water demand by pumping water out of the Little Arkansas River (during above-base-flow conditions), treating it using National Primary Drinking Water Regulations as a guideline, and injecting it into the aquifer for later use. Water-quality data were collected and analyzed by the U.S. Geological Survey from 2 Little Arkansas River surface-water sites and 63 </span><i>Equus</i><span> Beds groundwater sites, including 38 areal assessment index wells, each of which has a shallow well and a deep well. About 4,700 surface and groundwater samples were collected and analyzed for more than 300 water-quality constituents. About 1,300 groundwater chemistry samples were geochemically modeled. </span>Constituents of concern in the <i>Equus</i> Beds aquifer exceeded their respective Federal criteria throughout the study period and included chloride, sulfate, nitrate plus nitrite, <i>Escherichia coli</i> (<i>E. coli</i>), total coliforms, and dissolved iron and arsenic species.</p>
application/pdf
10.3133/fs20193017
en
U.S. Geological Survey
Water-quality and geochemical variability in the Little Arkansas River and Equus Beds aquifer, south-central Kansas, 2001–16
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