CALUMET UNION DRAINAGE CANAL NEAR MARKHAM, IL

HARVEY, IL41.5970°N, -87.6657°W Updated 23 hr ago

FLOW RATE

22cfs

GAUGE HT

2.92ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

22cfs 109.1% vs avg

Optimal band: 10–14 cfs

PERIOD HIGH

133cfs

PERIOD LOW

3cfs

RUNNABLE

10%

last 30 day in band

Gauge Height

2.92ft

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41.5970, -87.6657

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DATA · USGS · NOAA · NWSUPDATED 2026-10-16 00:00 UTC

Site #05536310·USGS

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