Total streamflow across the Weiser River was last observed at 4,970 cfs, and is expected to yield approximately 9,858 acre-ft of water today; about 116% of normal. Average streamflow for this time of year is 4,272 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 2,650 cfs. However, the streamgauge with the highest stage along the river is the Weiser River Nr Cambridge Id with a gauge stage of 6.78 ft. 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. It flows through the Weiser River Valley which has been inhabited by various Native American tribes for thousands of years. The first European to explore the area was Donald Mackenzie in 1818. The river has been used for irrigation and agriculture since the late 1800s, and the construction of the Mann Creek Reservoir in the 1960s helped to regulate its flow. The Weiser River is also popular for recreational activities such as fishing, camping, and hiking. The river provides habitat for a variety of fish including Chinook salmon, steelhead trout, and smallmouth bass. Despite its importance to the local community, the river faces threats from climate change and development pressures.