South Dakota · river
Grand River near Thunder Hawk
USGS monitoring location. Launch access and paddling suitability have not been verified.
Weather comparison · not a safety rating
Mostly favorable
Weather score out of 100
Weather only. This is a monitoring station, not a verified launch. Access, hazards and suitable flow are unknown.
Weather observation: Mon, 19 Oct 2026 22:30:00 GMT.
River observation: Mon, 19 Oct 2026 22:00:00 GMT.
Page checked: Mon, 19 Oct 2026 22:34:41 GMT. Readings older than one hour are not used for the current score.
Wind
14 mph
gusting to 22 mph
Air temp
65°F
0% chance of rain
River flow
33.6 cfs
Weather outlook
Thursday · 97
Mon
61
66°
Tue
93
71°
Wed
92
69°
Thu
97
79°
Best
Fri
38
77°
Sat
27
69°
Sun
33
53°
Compares forecast wind, air temperature and rain. Does not assess river flow, swell, currents, water temperature or launch access. All times are local to this location.
Wind, next 12 hours
mph| Hour | Wind (mph) | Gusts (mph) |
|---|---|---|
| 4p | 14 | 22 |
| 5p | 12 | 21 |
| 6p | 8 | 16 |
| 7p | 9 | 16 |
| 8p | 8 | 17 |
| 9p | 8 | 15 |
| 10p | 7 | 14 |
| 11p | 7 | 13 |
| 12a | 7 | 12 |
| 1a | 7 | 12 |
| 2a | 7 | 10 |
| 3a | 7 | 9 |
Why this score
- Wind — 14 mph — elevated wind-23
We don't have launch notes for this one
This page is built from the USGS gauge at this location, and uses available public readings. 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 06357600
Full hydrograph, historical flows, and station metadata