Streamflow discharge measurement at Solomon Gulch Tailrace, Valdez, Alaska
USGS staff measuring streamflow at the Solomon Gulch Tailrace with a tethered Acoustic Doppler Current Profiler. This is one of 12 streamgages that the USGS Alaska Science Center operates in cooperation with hydropower providers across Alaska. Data are used for operation, regulation, and planning purposes.
Photo taken by Jeff Conaway, U.S. Geological Survey