Identifier: | Rotary Screw Trap (RST) |
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Instrument / Gear: | Gear |
Instrument Type: | Traps and Pots |
Description: |
Rotary screw traps (RSTs) enable live capture of smolts emigrating from several coastal rivers. RSTs are positioned in the water channels to maximize fish capture. Fish enter the trap through the large end of a revolving and half-submerged screen cone suspended between two pontoons. As the river current turns the cone, the fish are guided downstream into a live car, where they are held in river water until retrieved for sampling. |
Record Created: | January 30, 2018 8:37 PM UTC by michael.chang@noaa.gov |
Record Last Modified: | January 30, 2018 8:37 PM UTC by michael.chang@noaa.gov |