Split Rock Creek near Garretson

1. 1400.0 ft484th Avenue near the gauging location begins to flood as the bridge is overtopped.
2. 1398.0 ftPortions of Highway 11 will begin to flood west and southwest of Garretson including the bridge west of town being overtopped.
3. 1397.0 ftWater reaches the bottom of the bridge at the gauging location on 484th Avenue.
4. 1395.0 ftWater begins to impact a couple of homes between Hwy 11 and Garretson. Some of the roads in Palisades State Park will begin to flood, and water reaches the bottom of the bridges on Highway 11 west of Garretson.
5. 1392.0 ftSignificant agricultural flooding begins, and portions of 483rd Avenue near 257th Street will flood.
6. 1389.0 ftThe lower parts of the road at Split Rock Park in Garretson flood, and minor agricultural flooding begins along the entire stretch of the creek.
7. 1386.0 ftMinor pasture flooding begins, as does flooding to some of the day-use areas in Palisades State Park. Water may begin to approach the bridge just north of the dam in Split Rock Park
8. 1383.0 ftThe lowest banks begin to be overtopped but much of the water remains in the relatively steeper banks of this stretch of the creek.

Most recent crests

• June 30, 2025: 1381.8 ft
• June 22, 2024: 1387.5 ft
• April 9, 2023: 1384.6 ft
• August 18, 2020: 1380.6 ft

• UpstreamSplit Rock Creek at Jasper
• DownstreamSplit Rock Creek at Corson
• Big Sioux River at Brandon
• Pipestone Creek
• Silver Creek at Sioux Falls
• Big Sioux River at Sioux Falls I-90
• Big Sioux River at Sioux Falls N. Cliff Avenue
• Big Sioux River at Dell Rapids

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.