About this river
Salmon River is a 16.5 mile river near Rapid River Outfitters LLC in Idaho. Streamflow is measured at the USGS gauge Little Salmon River at Riggins ID (site 13316500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1951 to 2026
Salmon River typically runs highest in May, at a median 2,300 cfs, and lowest in September, at 196 cfs. The highest flow on record for any single day is 9,650 cfs, in 1974.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 228 | 176 to 317 | |
| February | 277 | 196 to 412 | |
| March | 497 | 323 to 837 | |
| April | 1,185 | 820 to 1,665 | |
| May | 2,300 | 1,670 to 3,260 | |
| June | 2,255 | 1,365 to 2,930 | |
| July | 450 | 340 to 662 | |
| August | 220 | 179 to 287 | |
| September | 196 | 160 to 253 | |
| October | 198 | 158 to 244 | |
| November | 225 | 182 to 298 | |
| December | 223 | 177 to 316 |
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 73 years of record. Statistics published by the US Geological Survey for Little Salmon River at Riggins ID (site 13316500). 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 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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