All-Outdoors California Whitewater Rafting
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Around here
Around All-Outdoors California Whitewater Rafting
- John Muir National Historic SiteRecreation area8.2 mi (opens in a new tab)
- John Muir National Historic Site Visitor CenterVisitor center8.7 mi (opens in a new tab)
- Contra Loma ReservoirRecreation area13.2 mi (opens in a new tab)
- Big Break Visitor Center at the DeltaVisitor center19 mi (opens in a new tab)
- San Francisco Maritime Visitor CenterVisitor center21.4 mi (opens in a new tab)
- San Francisco Maritime National Historical ParkRecreation area21.5 mi (opens in a new tab)
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
Typical flow by month
1953 to 2026
The water at All-Outdoors California Whitewater Rafting typically runs highest in February, at a median 2.8 cfs, and lowest in September, at 0.0 cfs. The highest flow on record for any single day is 488 cfs, in 2023.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 1.0 | 0.3 to 7.0 |
| February | 2.8 | 0.8 to 7.9 |
| March | 2.7 | 1.0 to 8.2 |
| April | 1.6 | 0.6 to 4.9 |
| May | 0.8 | 0.3 to 1.8 |
| June | 0.4 | 0.1 to 0.8 |
| July | 0.1 | 0.0 to 0.3 |
| August | 0.0 | 0.0 to 0.2 |
| September | 0.0 | 0.0 to 0.1 |
| October | 0.0 | 0.0 to 0.1 |
| November | 0.1 | 0.0 to 0.3 |
| December | 0.3 | 0.1 to 1.2 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 74 years of record. Statistics published by the US Geological Survey for San Ramon C at San Ramon CA (site 11182500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Current conditions
Today · Sat
94Go/ 100
CloudyHigh 70°F, low 43°FRain 0%Wind 6 kt, gusts 7
Streamflow
0.0 cfs
Normal (35th)
Water level
2.47 ft
Air quality
19 Good
Concord monitor, 6 km
National Weather Service
NWS issues forecasts here only during high water.
Forecast from Open-Meteo global models (NOAA & ECMWF). Flood stages and forecasts: NOAA National Weather Service. Air quality: Bay Area Air District via EPA AirNow. Preliminary data, not verified.
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