As springtime temperatures rise, the melting of higher than normal winter snowpack has caused flooding on rivers and streams throughout Idaho, eastern Oregon, and northern Nevada. Hydrographers from our Post Falls, Idaho Falls, and Boise field offices have responded quickly to collect data and document high-water marks, to repair flooded streamgages, and to install emergency streamgages to provide additional data for emergency response managers.
Our monthly Idaho Hydrologic Update enters its second year of keeping you 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.
Download our latest update.
Sign up to receive monthly updates by e-mail.
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.
In 2009, the Federal Highway Administration published Hydraulic Engineering Circular No. 23 (HEC-23) to provide specific design and implementation guidelines for bridge scour and stream instability countermeasures. However, the effectiveness of countermeasures implemented over the past decade following those guidelines has not been evaluated. In this report and the associated data release, our scientists present the results of their systematic evaluation of bridge scour countermeasures at 14 sites in four states.
In partnership with the Idaho Department of Water Resources and the Idaho Water Resource Board, we will construct a numerical groundwater-flow model of the Treasure Valley and surrounding area. Resource managers will use the model to simulate potential human and climatic effects on groundwater for water-supply planning and management. As part of model construction, the hydrogeologic understanding of the aquifer system will be updated with information collected during the last two decades and new data collected for the study.