Streamflow information saves lives and protects property during floods. Information on the streamflow in the Nation's rivers also helps to ensure adequate water resources for a healthy environment and economy. The U.S. Geological Survey (USGS) operates and maintains a national network of over 7,000 streamgages.
| Most Recent Instantaneous Value Feb 28 | Min (1940) | 25th percen- tile | Median | 75th percen- tile | Mean | Max (1948) |
|---|---|---|---|---|---|---|
| -- unavailable -- | 15.0 | 61 | 142 | 249 | 289 | 6700 |
U.S. Department of the Interior |
U.S. Geological Survey
Title: USGS Current Conditions for Illinois
URL:
Page Contact Information: Illinois Water Data Support Team
Page Last Modified: 2026-02-28 13:22:28 EST
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