California · river
Mf San Joaquin River near Mammoth Lakes
Live conditions for this USGS-monitored stretch of water, updated every 15 minutes.
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Paddle Score, from live wind and water conditions
Wind
5 mph
gusting to 10 mph
Air temp
55°F
0% chance of rain
River flow
8.19 cfs
normal for this date
Best day to paddle this week
Wednesday · 100
Today
37
72°
Sat
31
66°
Sun
61
68°
Mon
85
73°
Tue
72
72°
Wed
100
76°
Best
Thu
99
78°
Scored from each day's peak forecast wind, heat, and rain chance — river flow isn't forecastable, so check back before you load the boat.
Wind, next 12 hours
mph| Hour | Wind (mph) | Gusts (mph) |
|---|---|---|
| 12a | 5 | 9 |
| 1a | 5 | 10 |
| 2a | 6 | 13 |
| 3a | 5 | 13 |
| 4a | 7 | 13 |
| 5a | 7 | 14 |
| 6a | 7 | 14 |
| 7a | 6 | 14 |
| 8a | 6 | 17 |
| 9a | 13 | 22 |
| 10a | 16 | 25 |
| 11a | 19 | 26 |
Is this flow normal for September 11?
Today's 8.19 cfs is 45% below the median for this date — which counts as normal water here.
The median flow on this date is 15 cfs, across 14 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 — 5 mph — calm, ideal for any boat±0
- Cold — 55°F — dress for the water, not the air-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 11224000
Full hydrograph, historical flows, and station metadata