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Equus Beds Aquifer Storage and Recovery Phase 1 Injection Permit Monitoring Results

Index

Equus Beds Aquifer Maps

Underground Injection Permit Document

Water Quality

Groundwater sample collection 
near the injection water treatment facility
Groundwater sample collection near the injection water treatment facility.

Description of Study

Much of the water supply for the City of Wichita comes from the Equus Beds aquifer. The available water supply for the city of Wichita must be increased to meet its future water needs through 2050. In order to meet this need, the Equus Beds Aquifer Storage and Recovery (ASR) Project Phase I began in 2006 "“to inject groundwater into the Equus Beds Aquifer for the purpose of storage and later recovery of the groundwater and to form a hydraulic barrier to a known brine plume"” (Kansas Underground Injection Control Area Permit Class V Injection Well, Kansas Permit No. KS-05-079-001).

The Equus Beds ASR Project Phase 1 is funded by the City of Wichita. The United States Geological Survey (USGS), Groundwater Management District Number 2 (GMD2), and two engineering consultant firms also are contributing funds, expertise and personnel to complete, design, and study the effectiveness of the aquifer storage and recovery project. The USGS role in activities with the city of Wichita is to describe the water resources in the Equus Beds aquifer and the Little Arkansas River; specifically streamflow, stream and groundwater-quality, and changes in groundwater levels and storage historically since 1940.

The Equus Beds ASR Project Phase 1 will divert water from the Little Arkansas River through bank storage (diversion) wells, completed adjacent to the stream, when flow in the Little Arkansas River exceeds base flow. Base flow is defined in Kansas Permit No. KS-05-079-001 as flow greater than 57 cubic feet per second (cfs) from April 1 through September 30 and 20 cfs from October 1 through March 31 as recorded at the USGS streamgaging station Little Arkansas River at Highway 50 near Halstead, Kansas (07143672). The diverted water then will be artificially recharged into the Equus Beds aquifer through injection wells and recharge basins according to permit guidelines in Kansas Underground Injection Control Area Permit Class V Injection Well, Kansas Permit No. KS-05-079-001.

The objective of the USGS portion of this study is to provide groundwater-quality monitoring from 2006 through 2009 “"to evaluate the impact of the injection operation on the Equus Beds aquifer"” according to Kansas Underground Injection Control Area Permit Class V Injection Well, Kansas Permit No. KS-05-079-001. This will be accomplished by collecting water-quality samples from monitoring wells (30) installed by the city of Wichita and named in Kansas Permit No. KS-05-079-001 as well as "“all domestic wells (6) within one-quarter mile of the recharge/recovery wells and recharge basins"” (Kansas Underground Injection Control Area Permit Class V Injection Well, Kansas Permit No. KS-05-079-001). The USGS also will provide annual monitoring of the source water for injection for Tables 1-7 as required by Kansas Permit No. KS-05-079-001.

Water-quality data will be reported to the city of Wichita and available to the Kansas Department of Health and Environment (KDHE), Kansas Department of Agriculture, Division of Water Resources (DWR), Groundwater Management District #2 (GMD2), and the public by means of the world wide web at http://ks.water.usgs.gov/pages/equus-beds-recharge "“no later than 90 days following the completion of a monitoring well network sampling event,"” (Kansas Underground Injection Control Area Permit Class V Injection Well, Kansas Permit No. KS-05-079-001). An interpretive report describing the baseline water quality in the Equus Beds aquifer as well as the effects of the first two years of Equus Beds ASR Project Phase I will be published in FY 2009.

For additional information, please write or call:

Andy Ziegler
U.S. Geological Survey
Kansas Water Science Center
4821 Quail Crest Place
Lawrence, KS 66049-3839
Telephone: (785) 842-3539
Fax: (785) 832-3500
Email: GS-W-KS_equus@usgs.gov

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Page Last Modified: 2015-10-28 13:42:46 CDT