About this river
Dearborn River is a 28.1 mile river near Missouri River Angler in Montana. Streamflow is measured at the USGS gauge Dearborn River near Craig MT (site 06073500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1946 to 2026
Dearborn River typically runs highest in May, at a median 554 cfs, and lowest in September, at 43 cfs. The highest flow on record for any single day is 12,500 cfs, in 1964.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 49 | 36 to 63 | |
| February | 50 | 39 to 64 | |
| March | 57 | 45 to 86 | |
| April | 182 | 101 to 293 | |
| May | 554 | 342 to 902 | |
| June | 467 | 263 to 877 | |
| July | 113 | 81 to 242 | |
| August | 48 | 32 to 80 | |
| September | 43 | 29 to 60 | |
| October | 59 | 44 to 79 | |
| November | 61 | 45 to 83 | |
| December | 52 | 40 to 74 |
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 56 years of record. Statistics published by the US Geological Survey for Dearborn River near Craig MT (site 06073500). 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 Dearborn 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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