Making the Transition

by G. Nicholas Textor, P.E., Vice President; Consoer Townsend Envirodyne Engineers, Inc. of Chicago,
Mohammed Kothawala, P.E., (F.ASCE), Senior Geotechnical Engineer; Consoer Townsend Envirodyne Engineers, Inc. of Chicago,

Serial Information: Civil Engineering—ASCE, 2003, Vol. 73, Issue 5, Pg. 58-63

Document Type: Feature article


Completed in March, the Thornton Transitional Reservoir, south of Chicago, is providing immediate flood relief and water quality benefits more than decade before a larger storm-water reservoir is to be constructed on the same site. While converting part of an active quarry into the reservoir, engineers designed several features that will be included in both the transitional and the final reservoir. The challenges included constructing a tunnel beneath a highway that runs over one of the quarry and walls and ensuring that operations at the active mine are not disturbed.

Subject Headings: Reservoirs | Water quality | Floods | Stormwater management | Construction sites | Tunnels | Highways and roads | Walls | Chicago | Illinois | United States

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