MEDIAN FLOW RATE · 1 YEAR
4cfs
Optimal band: 4–6 cfs
PERIOD HIGH
381cfs
PERIOD LOW
1cfs
RUNNABLE
13%
last 1 year in band
Gauge Height
6.00ft
Precipitation History
Your History · BLACK SLOUGH AT CR 500N NR PHILO, IL
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Station Location
39.9526, -88.1692Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC
Site #03343350·USGS
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