Chicago Area Waterway System status ⏰ Automatically updates (daily) 0. Map of stations ⬆️ Click this static map for the interactive map on Google Maps ⬆️ 1. Gage height 1.1 Illinois 1.2 Indiana 2. Discharge 2.1 Illinois 2.2 Indiana Credit: The HydroFunctions project is applied to get water data from USGS NWIS