Is the Grand River flooding?
The Grand River is tracked by 3 USGS streamgauges in South Dakota. This page compares each gauge’s live water level against its official National Weather Service flood stage, refreshed every 15 minutes, so you can tell whether the Grand River is running normal, rising toward flood stage, or already flooding. 1 of 3 gauges have both a usable water-level reading and a published minor flood stage. Gauges without a published flood stage show water level and flow only. For nearby rivers, see all South Dakota river levels.
River facts
The longest-running gauge on this river is Grand River at Shadehill SD. The highest level ever recorded there was 21.00 ft on 16 April 1950, carrying 58,000 cfs. Peak records there go back to 1944 (47 annual peaks).
| Gauge | Status | Stage | Flood stage | Updated |
|---|---|---|---|---|
| Grand River at Little Eagle, SD | No flooding | 2.57 ft | 15 ft | |
| Grand River at Shadehill SD | No current data | — | — | — |
| Grand River near Thunder Hawk, SD | No flood stage defined | 5.02 ft | — |
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.