CHAMPAIGN, Ill., 5/4/20: The Illinois State Water Survey (ISWS) announced today that new hydrologic and hydraulic modeling in McHenry County, Illinois, is underway as part of a study to help local communities identify areas of high flood risk for flood mitigation planning.
ISWS is working collaboratively on the project with the Illinois Department of Natural Resources-Office of Water Resources (IDNR-OWR) and the Federal Emergency Management Agency (FEMA).
The first phase of the project, data collection, is anticipated to be completed in spring 2020. In this phase, surveyors will conduct detailed channel and bridge surveys of the river, including in or near the Villages of Spring Grove, Wonder Lake, and Richmond as well as McHenry County Unincorporated Areas and other municipalities.
Field Survey activities will primarily be focused within the riparian corridor of Nippersink Creek from Wonder Lake Dam to areas near Barnard Mill Road, North Branch Nippersink Creek from the confluence with Nippersink Creek to the confluence of Elizabeth Lake Drain, North Spring Creek from the confluence with Nippersink Creek to near Brentwood Drive, and South Spring Creek from the confluence with Nippersink Creek to near Spring Grove Road south of Spring Ridge Drive.
Residents should be aware of the periodic presence of survey crews in the area. Surveys will be completed as stream conditions and weather allow.
Questions about the study can be directed to Greg Byard at the Illinois State Water Survey (firstname.lastname@example.org), 217-244-0360.