|Illinois Stream and River Levels|
The United States Geological Survey has a number of stream gages located throughout Illinois. These estimate stream levels, discharges and record them over time. This data is published on the web and many stations allow users to plot custom graphs. Get updated Illinois river and stream levels from USGS here
|Illinois Stream and River Level Alerts|
The United States Geological Survey has a system that will send you an email message when flood levels are reached on any steam with USGS gaging equipment that you have selected. Sign up here
to recieve Illinois stream and river level alerts.
|Illinois Water Publications|
The United States Geological Survey has a number of publications related to water use and water resources in Illinois. View the water resource publications for Illinois here