About this river
Bull Run River is a 6.8 mile river near Clackamas River Outfitters in Oregon. Streamflow is measured at the USGS gauge North Fork Bull Run River near Multnomah Falls, OR (site 14138900). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1966 to 2026
Bull Run River typically runs highest in December, at a median 78 cfs, and lowest in August, at 14 cfs. The highest flow on record for any single day is 1,910 cfs, in 1978.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 77 | 45 to 158 | |
| February | 66 | 44 to 106 | |
| March | 71 | 50 to 104 | |
| April | 76 | 56 to 102 | |
| May | 60 | 39 to 93 | |
| June | 35 | 25 to 57 | |
| July | 19 | 15 to 23 | |
| August | 14 | 12 to 17 | |
| September | 14 | 11 to 20 | |
| October | 23 | 15 to 41 | |
| November | 75 | 43 to 134 | |
| December | 78 | 47 to 145 |
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 60 years of record. Statistics published by the US Geological Survey for North Fork Bull Run River near Multnomah Falls, OR (site 14138900). 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 Bull Run River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
