SOUTH DAKOTA FLOW REPORT

Last Updated: March 6, 2026

Streamflow levels across South Dakota are currently 418.0% of normal, with the Whetstone River Near Big Stone City reporting the highest discharge in the state with 29300cfs and gauge stage of 2.25 ft. Meanwhile, the Whetstone River Near Big Stone City is seeing a spike in streamflows today after experiencing a 76401.31% increase since yesterday, and currently running at 29300cfs.

Maximum gauge stage in the state was last observed at the James River At Nd-Sd State Line, currently reporting a stage of 88.4ft. The Whetstone River Near Big Stone City in the Upper Minnesota watershed is surging for this time of year at 29300cfs, about 2426.97% of normal.