Recently, Illinois officials have sought a federal disaster declaration from USDA in response to the heavy rainfall and damaging flooding across Illinois during May, June, and July of 2015. Update August 12: all but one county in Illinois is eligible for federal agricultural disaster loans due to excess rain according to news reports.
In response I have used resources here at the Illinois State Water Survey to set up data files with monthly rainfall and departures from normal (when available) for over 500 sites in Illinois to aid in identifying locations with potential problems.
- May, June, July, and May-July rainfall totals in a web page with tabs across the bottom
- May, June, July, and May-July rainfall totals as an Excel spreadsheet
- High resolution precipitation maps based on radar and rain gauge measurements