Flood — Codington, South Dakota

2025-08-06 to 2025-08-07 · near Rauville, Codington, South Dakota

Event narrative

The portion of the Big Sioux River at Watertown Sioux Conifer Road went into flood at 845 am CST August 7th, cresting at 9.15 feet, or 0.15 feet above flood stage. The river fell below flood at 9 pm CST August 7th with the flooding primarily limited to low spots.

Wider weather episode

Heavy rainfall of 2 to 4 inches across Codington and Hamlin counties, falling on already saturated soils due to above normal precipitation through the spring and summer months, resulted in flooding of the Big Sioux River and its tributaries including Mud and Willow Creeks. Flooding would mainly be limited to low spots and agricultural lands, however.

View location on OpenStreetMap → (44.9800, -97.1300)

Source: NOAA Storm Events Database, event_id 1290202. Narrative written by the NWS forecast office that issued the report.