BIG SIOUX R NEAR CASTLEWOOD,SD
USGSSouth Dakota (44.73155, -97.04465) · View on map
Current reading
23.1 CFS
Gauge height: 4.72 FT
Read 31 minutes ago · Aug 25, 2026 1:45 PM CDT
Flow history — last 6 days
No readings recorded in the last 6 days.
Runs on this gauge
No runs currently read this gauge.