CALUMET UNION DRAINAGE CANAL NEAR MARKHAM, IL

HARVEY, IL41.5970°N, -87.6657°W Updated 21 hr ago

FLOW RATE

33cfs

GAUGE HT

3.29ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

33cfs 348.4% vs avg

Optimal band: 44–60 cfs

PERIOD HIGH

546cfs

PERIOD LOW

10cfs

RUNNABLE

16%

last 30 day in band

Gauge Height

3.29ft

Precipitation History

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41.5970, -87.6657

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DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC

Site #05536310·USGS

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