SIMULATION OF WATER QUALITY FOR SALT CREEK IN NORTHEASTERN ILLINOIS

SIMULATION OF WATER QUALITY FOR SALT CREEK IN NORTHEASTERN ILLINOIS

The U.S. Geological Survey (USGS), U.S. Department of the Interior, and the Illinois Environmental Protection Agency (IEPA) have developed a computer model for simulation of water-quality processes in the Salt Creek watershed in Cook and Du Page Counties in northeastern Illinois. Results of simulation are described in a recently released USGS report. The U.S. Environmental Protection Agency QUAL2E model was used in this simulation. This model was developed on the basis of extensive water-quality data collected by the USGS and IEPA in late June and late August 1995. The model was applied to simulate selected sewage-treatment-plant discharge scenarios for low-flow conditions in the Salt Creek watershed. Charles Melching, USGS hydraulic engineer and principal author of the report, said, "The results of simulation of observed water-quality conditions in late June and late August 1995 indicate that the model simulates reliable information for water-quality planning." The IEPA will utilize this model for water- quality planning in the Salt Creek watershed.

The report, titled "Simulation of Water Quality for Salt Creek in Northeastern Illinois," by Charles S. Melching and T. J. Chang, has been released as U.S. Geological Survey Open-File Report 96-318. Copies are available for inspection at the U.S. Geological Survey, 102 East Main Street, 4th Floor, Urbana, Illinois 61801. Paper and microfiche copies can be purchased at cost from the U.S. Geological Survey--, Information Services, Box 25286, Federal Center, Denver, CO 80225 (phone number is (303)202-4700). Orders must include check or money order payable to the U.S. Department of the Interior--U.S. Geological Survey and must specify report number OFR 96-318.