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Idaho Part of Regional Drought Study

USGS hydrologic technician measuring low streamflow
USGS hydrologic technician measuring low streamflow

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. Read more >


Check Out Our New Monthly Hydrologic Update

USGS technician measures streamflow in the Owyhee River
USGS technician measures streamflow in the Owyhee River. Photo by USGS

We've launched a new service to help you stay updated about Idaho's water resources. Each month, we'll summarize significant findings from our hydrologic data networks, announce new studies, and let you know how we're supporting our local, state, Federal, and tribal partners with reliable, unbiased science.

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Current Streamflow Conditions

Today's streamflow conditions. Click to see more real-time data.
Map of below normal 7-day average streamflow compared to historical streamflow for the day of year. Click to see more real-time data.
Idaho's centennial streamgages with more than 100 years of recorded data

Latest Publications

Evaluation of Mercury in Rainbow Trout Collected from Duck Valley Indian Reservation Reservoirs, Southwestern Idaho and Northern Nevada, 2007, 2009, and 2013

Report cover. Click to read report.

Our biologists analyzed mercury concentrations in rainbow trout collected from three reservoirs on the Duck Valley Reservation. The work, conducted in cooperation with the Shoshone-Paiute Tribes, will help the Tribes to protect these important sport fisheries.

Hydrologic Influences on Water-Level Changes in the Eastern Snake River Plain Aquifer at and near the Idaho National Laboratory, Idaho, 1949–2014

Report cover. Click to read report.

During the summer of 2014, water levels in 177 monitoring wells at the Idaho National Laboratory reached record lows. In this report, USGS hydrologists Roy Bartholomay and Brian Twining examine hydrologic influences on water-level declines and how continuing declines might affect wells and pumps.