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Metropolitan Water Reclamation District of Greater Chicago

Over the last 24 hours, the Chicago metropolitan area has seen 1.7 inches of rainfall. The levels of rainfall vary across the region.

The Metropolitan Water Reclamation District’s Tunnel and Reservoir Plan (TARP) is comprised of three systems and all are operating as designed. Combined they are currently holding more than 4.4 billion gallons of water. The current status of all TARP tunnels and reservoirs includes:

  • The McCook TARP system is comprised of the Mainstream Tunnel, Des Plaines Tunnel, and McCook Reservoir. Currently 3.055 BG is stored which is 59% of the system’s capacity.
  • The Calumet TARP system is comprised of the Calumet Tunnel and Thornton Composite Reservoir. Currently 1.35 BG is stored which is 16% of the system’s capacity.
  • The Kirie TARP system includes a tunnel and Majewski Reservoir. They are storing 41.2 MG which is 58% of capacity of the system. The Majewski Reservoir is currently empty.

Before severe storms, we lower the levels of the Chicago Area Waterway System. We are working around the clock to manage the excess water coming in to our seven water reclamation plants. We encourage the public to reduce their water use as more rain is expected; therefore, we suggest waiting to run the dishwasher, shower or do the laundry.



Storm Update (1).pdf

Press Release
Stormwater

Established in 1889, the Metropolitan Water Reclamation District of Greater Chicago (MWRD) is an award-winning, special purpose government agency responsible for wastewater treatment and stormwater management in Cook County, Illinois.

 

For more information:

public.affairs@mwrd.org

312-751-6633