South Dakota · river
South Fork Grand River near Cash
Live conditions for this USGS-monitored stretch of water, updated every 15 minutes.
Stay home
Paddle Score, from live wind and water conditions
Wind
26 mph
gusting to 33 mph
Air temp
77°F
50% chance of rain
River flow
50.5 cfs
high for this date
Wind, next 12 hours
mph| Hour | Wind (mph) | Gusts (mph) |
|---|---|---|
| 4p | 10 | 11 |
| 5p | 25 | 34 |
| 6p | 30 | 43 |
| 7p | 14 | 32 |
| 8p | 10 | 25 |
| 9p | 6 | 9 |
| 10p | 3 | 11 |
| 11p | 7 | 9 |
| 12a | 4 | 7 |
| 1a | 6 | 9 |
| 2a | 3 | 8 |
| 3a | 7 | 10 |
Is this flow normal for July 30?
Today's 50.5 cfs is 288% above the median for this date — which counts as high water here.
The median flow on this date is 13 cfs, across 78 years of USGS record at this gauge. Whether that is runnable depends on the stretch — this is context, not a recommendation.
Why this score
- Wind — 26 mph — stay off open water-70
- Rain — 50% chance in the next 6 hours-8
We don't have launch notes for this one
This page is built from the USGS gauge at this location, so the flow and weather are real — but we haven't verified where to put in, what the hazards are, or whether this stretch is legal or sensible to paddle. We'd rather say that than invent it. The links below are where to find out.
We also don't have a verified safe-flow range here, so the Paddle Score reflects weather only. Judge the flow number against local knowledge, not against our score.
Do your own homework
We show you live conditions. For local knowledge — where to put in, what the hazards are, whether it's worth the drive — here's where paddlers actually talk about this water. We don't vet these sources; check the dates and judge for yourself.
- Paddler discussion on Reddit
Trip reports and local warnings, straight from the source
- Search American Whitewater
Rapid classifications and gauge-linked run descriptions
- Satellite view and access roads
Check parking, put-ins, and what the banks actually look like
- Video from this water
The fastest way to see the character of a run before you drive
- USGS gauge 06356500
Full hydrograph, historical flows, and station metadata