Weiser River

Last Updated: April 20, 2026

Total streamflow across the Weiser River was last observed at 4,120 cfs, and is expected to yield approximately 8,172 acre-ft of water today; about 127% of normal. River levels are high. Average streamflow for this time of year is 3,248 cfs, with recent peaks last observed on 2019-04-10 when daily discharge volume was observed at 25,780 cfs.

Maximum discharge along the river is currently at the Weiser River Nr Weiser Id reporting a streamflow rate of 2,620 cfs. This is also the highest stage along the Weiser River, with a gauge stage of 6.74 ft at this location. This river is monitored from 2 different streamgauging stations along the Weiser River, the highest being situated at an altitude of 2,647 ft, the Weiser River Nr Cambridge Id.

The Weiser River is a 103-mile long tributary of the Snake River in southwestern Idaho.


15-Day Long Term Forecast


River Details

Last Updated 2026-04-20
Discharge Volume 8,172 ACRE-FT
Streamflow 4,120.0 cfs
Past 24 Hours: -520.0 cfs (-11.21%)
Percent of Normal 126.85%
Maximum 25,780.0 cfs
2019-04-10
Seasonal Avg 3,248 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Weiser River Nr Cambridge Id
USGS 13258500
1500 cfs 5.82 ft -7.41
Weiser River Nr Weiser Id
USGS 13266000
2620 cfs 6.74 ft -13.25
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Weiser River is a 103-mile-long (166 km) tributary of the Snake River in western Idaho in the United States. It drains a mountainous area of 1,660 square miles (4,300 km2) consisting primarily of low rolling foothills intersected by small streams south and east of Hells Canyon along the Idaho-Oregon border.