The USGS is collecting streamflow, water temperature, and other data from rivers and streams to document the severity of this year’s drought across six western states, including Idaho. The goal of the study is to assess how warmer winter temperatures, reduced mountain snowpack, and a shift in precipitation from snow to rain may affect future water availability.
Our monthly Idaho Hydrologic Update helps you stay informed about Idaho's water resources. Each month, we summarize significant findings from our hydrologic data networks; announce new studies; and let you know how we support our local, state, Federal, and tribal partners with reliable, unbiased science.
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More than two dozen Idaho streamgages offer more than 100 years of water data. Click the Centennial Streamgage badge below to access data from these streamgages.
Sediment promotes natural river processes that can create habitat and food for fish. However, too much sediment settling in the critical spawning habitat of the endangered Kootenai River white sturgeon can smother the fish's eggs. Our sceintists estimated sediment transport in the river using both traditional sampling and acoustic technology.
In this report, hydrologist Alexandra Etheridge analyzed water-quality data that showed high levels of arsenic, antimony, and mercury. She also developed regrression models that identified sources of contaminants. The work, conducted in cooperation with the Idaho Department of Lands and Midas Gold, will let resource managers estimate concentrations of arsenic and antimony in real time.