Flood in Brookings County, South Dakota

Flood September 18, 2025 – September 20, 2025 · Brookings County, South Dakota

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

The Big Sioux River near Bruce rose above flood stage on the morning of September 18th, cresting around 0.79 feet above flood stage (8.79 ft) on the 19th. The river fell below flood stage during the early morning on September 20th.

The wider storm

Elevated river levels through the upper and portions of the middle Big Sioux River Basin continued into September. A couple of different heavy rain events again pushed isolated stretches of the river into Minor flood stage.

Began near Bruce (44.5400, -96.9600).

Source: NOAA Storm Events Database, event 1288694. Narratives are written by the National Weather Service forecast office that issued the report.

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