Water-quality sampling for selenium in the Lake Koocanusa Basin has been occurring since 1972. The USGS WY-MT WSC began a sampling program on the lake in 2018. Water-quality data are collected on the inflows to Lake Koocanusa, in the lake itself, and on the Kootenai River downstream of Libby Dam. All data are available online. Data in graphs are updated monthly to present the latest results. All data are considered provisional, except as noted on the agency data web page.
Selenium concentrations in Elk River above Highway 93 are from samples collected by Environment and Climate Change Canada and data are available here.
Dissolved selenium data for Lake Koocanusa at International Boundary collected by USGS are available here.
Dissolved selenium data Kootenai River below Libby Dam collected by USGS are available here.
- Overview
Water-quality sampling for selenium in the Lake Koocanusa Basin has been occurring since 1972. The USGS WY-MT WSC began a sampling program on the lake in 2018. Water-quality data are collected on the inflows to Lake Koocanusa, in the lake itself, and on the Kootenai River downstream of Libby Dam. All data are available online. Data in graphs are updated monthly to present the latest results. All data are considered provisional, except as noted on the agency data web page.
Sources/Usage: Public Domain.Selenium concentrations in Elk River above Highway 93 are from samples collected by Environment and Climate Change Canada and data are available here.
Sources/Usage: Public Domain.Total Dissolved Selenium for USGS site 12300110. * Refer to parameter 00098 to determine sampling depth. Dissolved selenium data for Lake Koocanusa at International Boundary collected by USGS are available here.
Sources/Usage: Public Domain.Total Dissolved Selenium for USGS site 12301933. Dissolved selenium data Kootenai River below Libby Dam collected by USGS are available here.
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