Aaron Heisey and EESC colleagues enter the east flume in the Conte Lab's Fish Passage Complex after the conclusion of a study trial to recover adult white suckers

USGS Fish Biologist Aaron Heisey and EESC colleagues enter the east flume in the Conte Lab's Fish Passage Complex after the conclusion of a study trial to recover adult white suckers.  This study compares two fish ladders (novel D-cylinder on left, Denil on right) by measuring the performance of live fish through video and telemetry in one of USGS' largest ecohydraulics laboratories.  The D-Cylinder fish ladder is being studied as a more efficient, multi-species, replacement for the aging and ubiquitous Denil fishway.

Summer 2023 NER Photo Contest Winner: Brett Towler, Where We Work category