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News Releases
September 22, 2010
South Holland Fire Dept
Hosts Parade of Lights
February 1, 2010
Proclamation: African American History Month
November 17, 2009
South Holland Amends Sunday Closing Ordinance
September 21, 2009
New Director & Deputy Director of Public Works
August 17, 2009
New Deputy Fire Chief in South Holland
August 17, 2009
New Deputy Police Chief in South Holland
September 15, 2008
Village of South Holland Appoints New Trustee
July 7, 2008
Resolution Supporting CN's Acquisition of EJ&E
April 18, 2005
Town Center... Renaissance in South Holland
January 26, 2005
South Holland Honors Dr. Martin Luther King, Jr.
January 25, 2005
South Holland Celebrates Deep Tunnel Success
December 23, 2004
South Holland Residents Commitment to Diversity
December 23, 2004
MB Financial Bank Sponsors Fitness Center
South Holland Celebrates Success of Deep Tunnel Project
Village Logo South Holland Celebrates
Success of Deep Tunnel Project

January 25, 2005
CONTACT:  J Wynsma

After many years of hard work and patience, South Holland residents can rest assured that their homes are safe from flooding. Thanks to the effectiveness of the Thorn Creek Diversion Tunnel, part of the Little Calumet leg of the Deep Tunnel project, recent heavy rainfall did not result in serious flooding problems for South Holland residents.

For many years, Thornton Township experienced significant flooding. Hundreds of homes in South Holland along the riverside would flood during periods of heavy rain. Records show major flooding occurred in the 1940s when the height of flood water at Cottage Grove reached 593.5 feet above sea level. A greater flood height occurred in 1990, as a new record was set at 595.5 feet.

Through the cooperative efforts of the Metropolitan Water Reclamation District (MWRD), the Village of South Holland and the Mayors and Managers Association, the Diversion Tunnel project was launched. This project, which utilizes the west lobe of the Thornton Quarry, has provided much needed relief to the Village. The reservoir provides 3.1 billion gallons of overbank flood protection for the Little Calumet River. The floodwater from the Little Calumet River and Thorn Creek is diverted into the west lobe of Thornton Quarry through two and one half miles of underground tunnel, which is 30 feet in diameter.

These days, residents can celebrate as the constant monitoring of the Thorn Creek basin means homes are safe from flooding. As water rises, it will overflow into the tunnel and travel into the west lobe. When heavy rains from Monday, January 10 through Wednesday, January 12 caused the Thorn Creek river to reached flood stage, diversion gates were opened to allow 1.3 billion gallons of excess water to flow into the Thornton Transitional Reservoir. Trustee Frank Knittle pointed out that the Little Calumet river was expected to crest well over 18 feet from the heavy rainfall. While water did rise relatively high in some yards, the South Holland Public Works department reported that the river crested at 15.3 feet, and homes stayed dry. Essentially, homes and businesses that would have flooded before the reservoir was constructed remained dry. The project will save Village residents and businesses millions of dollars and a lot of frustration.

"The Thorn Creek Diversion Tunnel is working great," said Mayor Don De Graff. "Residents should not be affected by flooding over the riverbank."


The Village of South Holland
16226 Wausau Avenue
South Holland, IL 60473
Telephone: 708-210-2913    Fax: 708-210-1019

Village of South Holland  -  16226 Wausau Avenue  -  South Holland, Illinois 60473  -  708-210-2900
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