When Martin Perales and Paul Blank go fishing on the Napa River, the fish barely stand a chance. The two men don't use a fishing rod. They use a rotary screw trap — a rotating funnel, 8 feet across, ...

A newly rebuilt smolt trap under the Lewiston‑Clarkston Blue Bridge is helping Idaho Fish & Game gather vital information on juvenile salmon and steelhead as they move through the Snake River.

The Napa County Resource Conservation District is operating a rotary screw trap to monitor and log fish species that navigate the Napa River. The hope is for a revitalized waterway for steelhead and ...

The original trap, constructed in the 1950s, had reached the end of its service life. The new facility improves safety for both fish and staff while ensuring reliable operation for years to come.

Add Yahoo as a preferred source to see more of our stories on Google. Volunteer Mike Shaw, of Harstine Island, lifts a coho salmon out of the Union River fish trap and releases it back into the river ...