River gauges›Illinois
RIVER GAUGE · FLAG CREEK

Flag Creek near Willow Springs

Cook County, Illinois

Water level3.17 ft
Flow7 cfs
Last readingSep 16, 2026, 5:15 PM UTC (last recorded)
Action9 ft
Minor flood10 ft
Moderate flood12 ft
Major flood13 ft

The past week

Loading chart…

What floods at each level

Highest crests on record

DateLevelFlow
Sep 13, 196113.71 ft2,680 cfs
Apr 17, 201310.57 ft2,610 cfs
Jul 17, 199610.37 ft2,300 cfs

When the water runs low

More on Flag Creek

Get an alert when Flag Creek rises

Save this gauge in the free StormCast app and pick the level that matters to you. Your phone goes off when the water gets there.

A river gauge in the StormCast app

← All Illinois gauges · Search another river