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Selenium in the Blackfoot River Watershed, Southeastern Idaho

The upper Blackfoot River of southeastern Idaho receives runoff from 12 large phosphate mines. Waste shales removed during mining are highly enriched in selenium, resulting in high selenium concentrations in runoff from the mine waste dumps. Beginning in 2001, the USGS, in cooperation with the Bureau of Land Management, has monitored streamflow and collected water-quality samples from the Blackfoot River just upstream of Blackfoot Reservoir. Read more >

Blackfoot River, southeastern Idaho.
Blackfoot River, southeastern Idaho.

More USGS Science

Coeur d'Alene River Basin Water-Quality Monitoring

South Fork Coeur d'Alene River near Kellogg. Click to go to study Web site.
In cooperation with the Environmental Protection Agency, we monitor water quality in streams in and around the Bunker Hill Superfund site in northern Idaho. Photo by USGS

Current Streamflow Conditions

Today's streamflow conditions. Click to see more real-time data.

Latest Publications

New Argon-Argon (40Ar/39Ar) Radiometric Age Dates from Selected Subsurface Basalt Flows at the Idaho National Laboratory, Idaho

Report cover. Click to read report.

Knowledge of the ages of subsurface basalt flows is needed to improve numerical models of groundwater flow and contaminant transport in the eastern Snake River Plain aquifer.

Multilevel Groundwater Monitoring of Hydraulic Head and Temperature in the Eastern Snake River Plain Aquifer, Idaho National Laboratory, Idaho, 2011–13

Report cover. Click to read report.

In this report, hydrologists Brian Twining and Jason Fisher provide data from 11 boreholes at the Idaho National Laboratory. These data help us to improve the scientific understanding of the eastern Snake River Plain aquifer.