SOUTH DAKOTA FLOW REPORT

Last Updated: May 9, 2026

Streamflow levels across South Dakota are currently 34.0% of normal, with the James River Nr Yankton Sd reporting the highest discharge in the state with 1180cfs and gauge stage of 3.49 ft. Meanwhile, the James River At Nd-Sd State Line is seeing a spike in streamflows today after experiencing a 3.74% increase since yesterday, and currently running at 693cfs.

Maximum gauge stage in the state was last observed at the James River At Nd-Sd State Line, currently reporting a stage of 89.62ft. The James R At Columbia Sd in the Upper James watershed is surging for this time of year at 728cfs, about -38.5% of normal.