The U.S. Army Corps of Engineers – Alaska District partners with the U.S. Department of Agriculture’s Natural Resources Conservation Service to measure winter snowfall levels and collect additional data from nine monitoring stations in the Chena River basin. The agencies analyze this information to estimate the volume of runoff when the snowpack melts in the mountains. Shown here, Lauren Oliver, civil engineer in the district’s Hydraulics and Hydrology Section, begins to take measurements at one of the telemetry sites in the Chena River basin April 30.