Dewatering Well Assessment for Highway Drainage in the East St. Louis Area, Illinois, Illinois State Water Survey

Groundwater Science

Madison and St. Clair counties

Dewatering Well Assessment for Highway Drainage in the East St. Louis Area, Illinois

Principal Investigators: Mark Anliker and Allen Wehrmann



Project Period: 2009-2010
Sponsor: Illinois Department of Transportation

The scope of work described in the cooperative agreement for FY10 includes monitoring the chemical treatment of work of IDOT's contractor to evaluate the chemical procedure on ten (10) dewatering wells; conducting condition assessment step tests on the ten (10) chemically treated wells and two (2) additionally selected dewatering wells; and continuing the program of groundwater level observation for the dewatering system. The discharge from all step tested wells will be sampled for chemical analysis by the ISWS laboratory. Letter reports describing the results will be provided to IDOT as each work item is substantially completed or as requested.

In the East St. Louis vicinity, the Illinois Department of Transportation Division of Highways (IDOT) owns 56 high-capacity wells that are used to maintain the elevation of the groundwater table below the highway surface in areas in which the highways were constructed below the original land surface. The dewatering systems are located at five sites in the alluvial valley of the Mississippi River in an area known as the American Bottoms. The alluvial deposits at the dewatering sites are about 90 to 115 feet thick and consist of fine sand, silt, and clay in the upper 10 to 30 feet, underlain by about 70 to 100 feet of medium to coarse sand.

The condition and efficiency of a number of the dewatering wells became suspect in 1982 on the basis of data collected and reviewed by IDOT staff. Since 1983, IDOT and the Illinois State Water Survey have conducted a cooperative investigation to more adequately assess the operation and condition of the wells, to attempt to understand the probable causes of well deterioration, and to evaluate rehabilitation procedures used on the wells.

Findings to Date:  ISWS continues to monitor specific capacity of operating dewatering wells, make recommendations for rehabilitation, monitor the rehabilitation process, and evaluate the success of rehabilitation via step-test analysis. We also monitor other contractor activities, such as drilling of replacement wells, and review of well design. This is a long-term repeating contract with IDOT that is likely to continue as long as the numerous highway sections of interest remain below grade. As of 2000, we no longer complete an annual final contract report; letter-reports are written through the year so work results are transmitted in a more timely manner.

Project Publications

Dewatering Well Assessment for the Highway Drainage System at Four Sites in the East St. Louis Area, Illinois (FY00-Phase 17), Anliker, Mark A. and Robert D. Olson, 2003, ISWS CR 2003-08 

Dewatering Well Assessment for the Highway Drainage System at Four Sites in the East St. Louis Area, Illinois (FY99-Phase 16), Anliker, Mark A. and Robert D. Olson, 2000, ISWS CR 2000-09 

Dewatering Well Assessment for the Highway Drainage System at Five Sites in the East St. Louis Area, Illinois (FY95-Phase 12), Olson, Robert D., and Ellis W. Sanderson, 2000, ISWS CR 2000-10 

Dewatering Well Assessment for the Highway Drainage System at Five Sites in the East St. Louis Area, Illinois (FY94-Phase 11), Sanderson, Ellis W., and Robert D. Olson, 1999, ISWS CR 641 

Dewatering Well Assessment for the Highway Drainage System at Four Sites in the East St. Louis Area, Illinois (FY93-Phase 10), Sanderson, Ellis W., and Robert D. Olson, 1998, ISWS CR 624 

Dewatering Well Assessment for the Highway Drainage System at Four Sites in the East St. Louis Area, Illinois (FY92-Phase 9), Olson, Robert D., and Ellis W. Sanderson, 1997, ISWS CR 613 

And several others all the way back to:

Dewatering Well Assessment for the Highway Drainage System at Four Sites in the East St. Louis Area, Illinois (Phase 1), Sanderson, Ellis W., Adrian P. Visocky, Mark A. Collins, Robert D. Olson, and Chester H. Neff, 1984, ISWS CR 341 

Selected Related Publications

Groundwater Development in the East St. Louis Area, Illinois, Richard J. Schicht, 1965, ISWS RI 51

Ground-water Levels and Pumpage in the Metro-East Area, Illinois, 1986 1990, Schicht, Richard J., and Andrew G. Buck, 1995, ISWS C 180

Tri Level Trucks

 

Illinois State Water Survey

2204 Griffith Dr
Champaign, IL 61820-7463
217-244-5459
info@isws.illinois.edu

Terms of use. Email the Web Administrator with questions or comments.

© 2017 University of Illinois Board of Trustees. All rights reserved.
For permissions information, contact the Illinois State Water Survey.
Site Map