Big Sioux River near Egan

1. 1527.0 ftthe bridge on 478th Avenue is overtopped.
2. 1524.0 ftThe bridge on 2nd Street is overtopped.
3. 1523.0 ftThe bridge on Highway 34 is overtopped, and water reaches the bottom of the bridge on 478th Avenue.
4. 1522.0 ftWater reaches the bottom of the bridge on 2nd Street and the ballfield at Egan Park floods.
5. 1521.0 ftHighway 34 begins to flood, and 478th Avenue north of the bridge begins to flood.
6. 1519.0 ftWater is across the road on both sides of the bridge by the Egan Park, and water reaches the bottom of the bridge on Highway 34.
7. 1517.5 ftCity park in Egan begins to flood
8. 1516.5 ftFlooding begins to affect agricultural lands around Egan.
9. 1515.0 ftThe lowest banks overflow near Highway 34 and also near 479th Avenue.

Most recent crests

• July 3, 2025: 1515.5 ft
• June 23, 2024: 1519.4 ft
• April 15, 2023: 1517.1 ft
• March 13, 2020: 1517.6 ft
• September 12, 2019: 1524.2 ft
• March 23, 2019: 1522.5 ft
• April 26, 2018: 1520.3 ft
• April 24, 2018: 1518.6 ft

• UpstreamBig Sioux River at Flandreau
• DownstreamBig Sioux River at Trent
• Bachelor Creek (SD) at Trent
• Flandreau Creek at Flandreau
• Spring Creek
• Pipestone Creek at Pipestone
• Big Sioux River at Dell Rapids
• Big Sioux River at Brookings

Forecasts by the Missouri Basin River Forecast Center. Forecasts are not available. Only observed stages are available for this point. No forecasts are available for this location Gauge reading may be affected by ice.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service.