Lemhi River

Streamflow Hydrology Weather


Lemhi River Levels

March 28 2024

672 ACRE-FT

Discharge Volume Today
-8.0 cfs (-2.31%) since yesterday
67.68% of normal Low

Total streamflow across the Lemhi River was last observed at 339 cfs, and is expected to yield approximately 672 acre-ft of water today; about 68% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 501 cfs, with recent peaks last observed on 2017-06-07 when daily discharge volume was observed at 3,390 cfs.

Maximum discharge along the river is currently at the Lemhi River Nr Lemhi Id reporting a streamflow rate of 339 cfs. This is also the highest stage along the Lemhi River, with a gauge stage of 4.18 ft at this location. This river is monitored from 2 different streamgauging stations along the Lemhi River, the highest being situated at an altitude of 4,912 ft, the Lemhi River Nr Lemhi Id.

Last Updated 2024-03-28
Streamflow 339.0 cfs
Percent of Normal 67.68%
Maximum 3,390.0 cfs
2017-06-07

About the 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.

Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Lemhi River Nr Lemhi Id
USGS 13305000
339 cfs 4.18 ft -2.31
Lemhi River Below L5 Diversion Near Salmon
USGS 13305310
317 cfs 2.22 ft -3.35

Peak Annual Discharge

Lemhi River Maximum Total Discharge

Seasonal Comparison

Lemhi River Year Over Year Discharge


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