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 >
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.