DuPage River Salt Creek Workgroup taking samplings for bioassessment
The city of Warrenville said the DuPage River Salt Creek Workgroup is conducting a bioassessment in DuPage and Cook counties from June to September. The workgroup will survey fish, macroinvertebrates, physical habitat and water column and sediment chemistry at 41 sites in the West Branch DuPage River watershed, which includes Warrenville.