Little Salmon River At Riggins flow report
As of July 16, 2026, Little Salmon River At Riggins is flowing at 294 cfs with a gage height of 2.85 ft, holding steady over the past 24 hours. Source: USGS gauge #13316500, refreshed throughout the day.
Historical Data
Little Salmon River At Riggins at a glance
How Little Salmon River At Riggins is running right now, where it sits on the map, and the key gauge stats.
Little Salmon River At Riggins is flowing at 294 cfs, with the water sitting 2.85 ft at the gage. Flow has held roughly steady over the past 24 hours.
This is USGS gauge #13316500 in Idaho. Over the past 10 days the average has been 329 cfs, peaking at 395 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Idaho flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #13316500).
Percentiles are flow-duration values computed from this gauge’s observed daily record as archived by Snoflo. Return periods are Weibull plotting-position estimates from observed annual maxima, provided as general reference context only. Always verify against official USGS NWIS records. Part of Snoflo for Engineering.
Streamflow Forecast
Over the next 5 days, Little Salmon River At Riggins Id is expected to recede from today's 294 cfs, toward roughly 253 cfs by 2026-07-21 (likely range 164-389 cfs) -- running well below the seasonal normal.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
| Date | Expected (p50) | Likely range (p25–p75) | vs normal | Projected stage |
|---|
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Little Salmon River At Riggins
It flows into the Salmon River and its largest tributary is the Rapid River. There are no major dams on the Little Salmon River. During the summer, flows typically decrease due to decreased snowmelt and precipitation, while in the winter, flows increase due to snowmelt and precipitation. The river is popular for fishing and water recreation activities. Interestingly, the Little Salmon River has been known to experience flash floods during heavy rainfall, making it important to monitor water levels before using the river.
Nearby streamflow levels
Cross-check Little Salmon River At Riggins's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Little Salmon River At Riggins Id | 294 cfs |
| Snake River At Hells Canyon Dam Id-Or State Line | 19,200 cfs |
| Salmon River At White Bird Id | 7,380 cfs |
| Imnaha River At Imnaha | 150 cfs |
| Nf Payette River At Mccall Id | 58 cfs |
| Lake Fork Payette River Ab Jumbo Cr Nr Mccall Id | 53 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Little Salmon River At Riggins. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Lucile 1.2 Nne | 0 in |
| Secesh Summit | 0 in |
| Nohrsc Secesh Summit | 0 in |
| Granite Mountain | 17 in |
| West Branch | 1 in |
| Nohrsc West Branch | 2 in |
River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Little Salmon River At Riggins in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Little Salmon River At Riggins crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Little Salmon River At Riggins
Where does the streamflow data for Little Salmon River At Riggins come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 13316500. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Little Salmon River At Riggins rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Little Salmon River At Riggins report
Create your free account to track this river — and everything else you love on the water.
- Flow alerts — get pinged the moment this river hits your range
- Save favorites — every river, lake & snowpack in one place
- Full history & forecasts — plus the free iPhone app