About this river
South Fork Bull Run River is a 2.6 mile river near Clackamas River Outfitters in Oregon. Streamflow is measured at the USGS gauge South Fork Bull Run River near Bull Run, OR (site 14139800). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1975 to 2026
South Fork Bull Run River typically runs highest in January, at a median 134 cfs, and lowest in August, at 14 cfs. The highest flow on record for any single day is 2,880 cfs, in 2000.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 134 | 72 to 236 | |
| February | 120 | 75 to 190 | |
| March | 125 | 82 to 194 | |
| April | 125 | 88 to 180 | |
| May | 82 | 51 to 137 | |
| June | 52 | 32 to 95 | |
| July | 24 | 17 to 29 | |
| August | 14 | 12 to 19 | |
| September | 14 | 10 to 24 | |
| October | 29 | 15 to 62 | |
| November | 126 | 71 to 215 | |
| December | 128 | 74 to 239 |
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 51 years of record. Statistics published by the US Geological Survey for South Fork Bull Run River near Bull Run, OR (site 14139800). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show South Fork Bull Run River'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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