The County of DuPage
Wheaton, Illinois

Elmhurst Quarry Flood Control Facility


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The Elmhurst Quarry Flood Control Facility is an 8,300 acre-foot flood control facility on which construction began in March of 1993. The reservoir takes advantage of the old Elmhurst Chicago Stone Quarry located south of North Ave. on Illinois Route 83 in Elmhurst. The two lobes of the quarry are separated by a rock high wall which supports West Ave. There is a "keyway" in the wall which allows diverted flood water to fill both lobes. The East Lobe is the deeper of the two lobes with an average depth of 200 feet.

When Salt Creek water elevations near flood stage, excess flood water begins spilling into a diversion channel which conveys the water to a drop shaft. Water then falls down the drop shaft into a 400 ft. long tunnel which carries the water under Rte 83 from west to east and into the west lobe of the quarry. The water is then held in the quarry until in creek water levels have receded to safe levels. The water is then pumped back to Salt Creek at safe flow rates.

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Upcoming Events

On Saturday, March 21, 2015, DuPage County residents will have a rare opportunity to tour the Elmhurst Quarry Flood Control Facility, learn about its history, visit various areas including private quarry platforms, and see how DuPage County Stormwater Management operates the facility.  This special program is presented in observance of National Flood Awareness Week to foster a greater understanding of how the county manages floodwater.

The Elmhurst Quarry Tours are co-presented by DuPage County Stormwater Management, Elmhurst Historical Museum, and Elmhurst Park District. The tours, which will be led by DuPage County staff, will depart from Elmhurst Historical Museum on March 21st via coach bus every 30 minutes from 9:00 a.m. until 1:30 p.m. and will last approximately two hours. Following the quarry visit, participants may join a guided tour of the Elmhurst Historical Museum’s new exhibit, “By All Accounts: The Story of Elmhurst,” and enjoy a brief film on the quarry’s history.

Quarry tour registration is available through the Elmhurst Park District’s web site at starting on February 28. Registration for this event is mandatory and will cost $5 per person, payable to the Elmhurst Park District. To request accommodations for visitors with disabilities, please email or call 630-530-6879 at least three weeks prior to the tour. For more information, visit or call the Elmhurst Historical Museum at 630-833-1457.

Prior to entering the Elmhurst Quarry Flood Control Facility, participants must return completed waivers to or you may mail to Christena Gunther, EHM, 120 E. Park Ave. Elmhurst, IL 60126 at least 1 week prior to your tour.