Illinois Water Well (ILWATER) Interactive Map


The ISGS is an official repository for records of wells drilled in the state of Illinois in our Geoscience Information Stewardship Section. Paper records are archived for over 700,000 wells. Some of these records go back as far as the late 1800s. Water and related well data can be accessed for private water wells, engineering borings, and stratigraphic borings.  Many of the paper records have been converted to digital and are searchable within the ILWATER Interactive Map.


Desktop - Flash Version

The ILWATER desktop version is for use on a desktop computer or device that can run a modern web browser that can run the Adobe Flash Player such as Google Chrome, Mozilla Firefox, or Internet Explorer. The ILWATER desktop application is not available on most smartphones or tablet devices, so if you navigate to the desktop application with a smartphone you will be automatically redirected to the mobile version.

Launch the ILWATER Desktop Application

Mobile - Non-Flash Version

The mobile application was designed as a lightweight version of ILWATER that is more suitable for the smaller screens of smartphones, and does not require the Adobe Flash Player. It is a good choice if you are for some reason unable to install the Adobe Flash Player on your computer or if you are accessing the application from a smartphone or tablet.

Launch the ILWATER Mobile Application

Troubleshooting ILWATER

To view the application, the Adobe Flash Player is required. Most modern web browsers already have Adobe Flash Player embedded in them, but it may need to be enabled. Follow the instructions below for your browser to ensure that Adobe Flash Player is enabled.

Google Chrome

  1. To the left of the web address, click Lock Lock or Info View site information.
  2. At the bottom, click Site Settings.
  3. In the new tab, to the right of "Flash," click the Down arrow Down arrow and then Allow.
  4. Go back to the site and reload the page.

Mozilla Firefox

  1. Click on the Run Adobe Flash icon in the center of your browser window.
  2. In the popup with the prompt "Do you want to allow Adobe Flash to run on this site?" Click Allow.

Microsoft Internet Explorer

Use the following link for instructions for enabling Flash in Internet Explorer (IE) running on Windows 10. These instructions also work for IE on Windows 8.1.

Microsoft Edge

Use the following link for instructions for enabling Flash in the edge browser running on Windows 10.

Viewing Logs

BlueView is an application to display TIFF (Tagged Image File Format) log image raster files on a Windows system. It is specifically designed to handle the very long narrow images that logs generate.

BlueView Log Image Manipulation Software is offered for download from Schlumberger.

If you have any problems with any of the application functionality, desktop or mobile, please contact Melony E. Barrett by email ( or phone 217-333-7917

Related Information

Data Disclaimer  Data Policies and Procedures
How Well Locations Are Described
Formation Description Abbreviations(PDF)
Water Well Data Elements (PDF)

To purchase data, call the ISGS Geologic Records Unit at 217-333-5109.