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, ...

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 ...

Aug. 15—In order to help reintroduce juvenile salmonids into the Yuba River, a preliminary rotary screw trap operation has been scheduled between October this year through May 2024. This pilot program ...

Rotary Screw Traps (RSTs) are specially designed sampling devices used to capture downstream migrating juvenile fish such as salmon and steelhead. They are large, cylindrical traps that float on ...

The bulky contraptions float listlessly downstream of three dams in Oregon’s Willamette Valley. The buoyant, metal devices hold large screws that the water flow turns. This twist of the screw – ...

Add Yahoo as a preferred source to see more of our stories on Google. Aug. 15—In order to help reintroduce juvenile salmonids into the Yuba River, a preliminary rotary screw trap operation has been ...