NOAA employees at the adult fish facility at Lower Granite, processing adult salmon who are on their way up river. At Lower Granite, NOAA, along with fishery managers from the states and tribes, collect about 18-20 percent of the returning adult salmon. They take genetic samples and scales before the salmon return to the fish ladder. The genetic samples allow fishery managers to assess where the salmon came from and track genetic lines. Some of the fish collected are kept and then trucked to hatcheries to be used as broodstock.