About this river
San Juan Creek is a 14.2 mile river near Laguna Ethos in California. Streamflow is measured at the USGS gauge San Juan C at LA Novia ST BR at San Juan Capis CA (site 11046530). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1986 to 2026
San Juan Creek typically runs highest in March, at a median 6.2 cfs, and lowest in July, at 0.0 cfs. The highest flow on record for any single day is 8,120 cfs, in 2005.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 3.2 | 0.7 to 8.9 | |
| February | 5.5 | 1.1 to 29 | |
| March | 6.2 | 1.1 to 38 | |
| April | 3.5 | 0.3 to 17 | |
| May | 1.3 | 0.0 to 6.4 | |
| June | 0.4 | 0.0 to 2.7 | |
| July | 0.0 | 0.0 to 0.5 | |
| August | 0.0 | 0.0 to 0.0 | |
| September | 0.0 | 0.0 to 0.0 | |
| October | 0.0 | 0.0 to 0.0 | |
| November | 0.0 | 0.0 to 0.9 | |
| December | 1.0 | 0.0 to 3.2 |
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 41 years of record. Statistics published by the US Geological Survey for San Juan C at LA Novia ST BR at San Juan Capis CA (site 11046530). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show San Juan Creek's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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