MEDIAN FLOW RATE · 7 DAY
444cfs 35.3% vs avg
Optimal band: 377–511 cfs
PERIOD HIGH
660cfs
PERIOD LOW
54cfs
RUNNABLE
25%
last 7 day in band
Gauge Height
7.79ft
Precipitation History
Your History · Big Sioux R nr Castlewood, SD
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Station Location
44.7316, -97.0446Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC
Site #06479525·USGS
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