Water Quality Monitoring and Sampling on the Unuk River, Alaska

USGS hydrologist monitoring water quality and collecting samples at USGS Station15015595 on the Unuk River, Alaska. In 2019, the USGS began studying the baseline water-quality of selected transboundary rivers in Alaska. These studies are designed to characterize current water-quality conditions to facilitate future assessments of potential impacts related to upstream mining activities. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.