CALUMET UNION DRAINAGE CANAL NEAR MARKHAM, IL

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

FLOW RATE

21cfs

GAUGE HT

2.91ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

21cfs 41.5% vs avg

Optimal band: 6–8 cfs

PERIOD HIGH

661cfs

PERIOD LOW

1cfs

RUNNABLE

11%

last 1 year in band

Gauge Height

2.91ft

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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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