Lemhi River Flow Today
As of October 14, 2026 at 1:45 AM, the Lemhi River is flowing at 152 cfs near Salmon, ID — 71% of normal for the date and up 6% in 24 hours. 2 of 2 USGS gauges reported in the last 3 days; flows range from 140 to 152 cfs. ❤ Favorite
Lemhi River map
See the Lemhi River on a live map
Every gauge, dam and paddle run on the river, one tap each:
- Gauges now — which reaches are high or low
- Dams & paddle runs — storage and what’s in range
- Rain — past 24 hrs and the 72-hr forecast, press play
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Lemhi River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Salmon, the Lemhi River is running 152 cfs — 71% of normal, up 6% since yesterday. Along the river, 2 of 2 reporting gauges are below normal (the typical gauge is at 67% of normal).
Paddlers: 0 of 6 runs on the Lemhi River with a live range are in range, 6 too low.
How the Lemhi River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Lemhi Id4,912 ft 140 cfs63%
- Salmon4,180 ft 152 cfs71%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Lemhi River streamgauge, placed by its own percent of normal. The line is the typical gauge (67%).
Lemhi River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | To flood stage | Elevation |
|---|---|---|---|---|---|---|
|
Lemhi River Near Lemhi Id ID
Oct 14, 2:00 AM · USGS 13305000 |
140 cfs | 63% | -5% | 3.72 ft | 2.8 ft below | 4,912 ft |
|
Lemhi River Below L5 Diversion Near Salmon ID
Oct 14, 1:45 AM · USGS 13305310 |
152 cfs | 71% | +6% | 1.71 ft | · | 4,180 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Paddle runs on the Lemhi River
Each run is checked against its runnable range using the gauge it is keyed to (or the nearest gauge on this river).
| Run | Status | Flow now | Runnable range | Class |
|---|---|---|---|---|
| Bear Valley Lake To Trailhead Gauge: Lemhi Id |
Too low | 140 cfs | 204–377 cfs typical | II–III |
| Headwaters To Wade Creek Gauge: Lemhi Id |
Too low | 140 cfs | 204–377 cfs typical | III–IV |
| Salmon River Gauge: Lemhi Id |
Too low | 140 cfs | 204–377 cfs typical | III–V |
| Salmon to North Fork Gauge: Salmon |
Too low | 152 cfs | 800–6,000 cfs | II |
| Trailhead To Confluence With Hayden Creek Gauge: Lemhi Id |
Too low | 140 cfs | 204–377 cfs typical | III–IV |
| Wade Creek To Nf Boundary Gauge: Lemhi Id |
Too low | 140 cfs | 204–377 cfs typical | IV |
Dams & reservoirs on the Lemhi River
Releases from these dams shape the flow downstream. Tap one for its daily level and history.
Lemhi River streamflow over time
Daily total flow across every monitored gauge on the river.
Maximum streamflow by year
Lemhi River
The Lemhi River is a tributary of the Salmon River located in Idaho, USA. It stretches for 60 miles from its source in the Lemhi Range to its confluence with the Salmon River. The hydrology of the Lemhi River is characterized by seasonal fluctuations in flow and high levels of sediment. The river has been the site of several dams and reservoirs, including the North Fork Dam and Reservoir, which was constructed in the 1970s to provide irrigation water for nearby farms. Today, the river is used for agricultural purposes, including irrigation and livestock watering, as well as for recreational activities such as fishing and rafting. The Lemhi River has a rich history, having been explored by Lewis and Clark on their westward expedition in 1805.
Fishing near the Lemhi River
About the Lemhi River
How is the Lemhi River flowing right now?
As of October 14, 2026, the Lemhi River is flowing at 152 cfs near Salmon, ID, about 71% of normal for the date. Across its 2 USGS gauges, current flows range from 140 to 152 cfs. Every gauge’s live reading is in the table above.
Is the Lemhi River running high or low?
The typical gauge on the Lemhi River is at 67% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
What is flood stage on the Lemhi River?
The National Weather Service sets flood stages for Lemhi Id (6.5 ft), . The table shows how far each gauge is below its flood stage right now.
Is the Lemhi River runnable for paddling today?
Each run in the paddle table is checked against its runnable range using its gauge's live flow.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.