Streamflow Measurement Under Ice at Cheyenne River near Wasta, SD

 During wintry conditions, streamflow is often measured under ice. This often means using an ice auger to cut holes through the ice, at increments across the full width of the stream. This photograph shows a USGS Hydrologic Technician making a streamflow measurement on January 4, 2018, at the Cheyenne River near Wasta, SD (streamgage 06423500; https://waterdata.usgs.gov/sd/nwis/inventory/?site_no=06423500&agency_cd=USGS&). The discharge on this date was 95 cubic feet per second and the width of the stream was 77 feet.