About this river
Salmon River is a 41.0 mile river near Salmon River Adventure Company in Idaho. Streamflow is measured at the USGS gauge Salmon River at Salmon ID (site 13302500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1913 to 2025
Salmon River typically runs highest in June, at a median 5,055 cfs, and lowest in September, at 999 cfs. The highest flow on record for any single day is 17,400 cfs, in 1974.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,050 | 906 to 1,200 | |
| February | 1,070 | 945 to 1,180 | |
| March | 1,100 | 999 to 1,190 | |
| April | 1,470 | 1,175 to 1,935 | |
| May | 3,310 | 2,370 to 5,250 | |
| June | 5,055 | 3,565 to 7,355 | |
| July | 2,220 | 1,310 to 3,250 | |
| August | 1,100 | 746 to 1,390 | |
| September | 999 | 805 to 1,245 | |
| October | 1,280 | 1,040 to 1,470 | |
| November | 1,290 | 1,120 to 1,455 | |
| December | 1,100 | 952 to 1,280 |
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 110 years of record. Statistics published by the US Geological Survey for Salmon River at Salmon ID (site 13302500). 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 Salmon 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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