8/9/2025 10:08:00 AM until 8/10/2025 6:15:00 PM

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov/abr. The next statement will be issued by Sunday evening at 615 PM CDT.

The Flood Warning is extended for the following rivers in South Dakota... Big Sioux River Near Castlewood affecting Hamlin County. .For sites with a river forecast, the forecast includes precipitation through the next 24 hours. Any future precipitation could affect the forecasts. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Big Sioux River near Castlewood. * WHEN...Until early Monday morning. * IMPACTS...At 8.0 feet, Minor flooding of low-lying agricultural lands along the river will begin. At 9.0 feet, Water overtops the culvert on 184th Street and significant agricultural flooding begins north of Castlewood. At 10.0 feet, 184th Street begins to flood. * ADDITIONAL DETAILS... - At 9:45 AM CDT Saturday the stage was 9.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:45 AM CDT Saturday was 10.0 feet. - Forecast...The river is expected to fall below flood stage tomorrow evening and continue falling to 8.1 feet Thursday morning. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood