Smith-Root designed and constructed a permanent barrier to divert upstream-migrating fish into a bypass fish trap.
Idaho Fish and Game operates a continuing program to protect native cutthroat trout from non-native rainbow habitat and possible crossbreeding pressures. One part of this effort involves intercepting all upstream-migrating fish in particular streams so that the rainbow can be removed. A pilot installation of a temporary Smith-Root fabric barrier at a diversion weir on Palisades Creek, a tributary of the Snake River, proved successful in 2007. Smith-Root designed and constructed a permanent barrier at the same site. This involved removing the existing weir deck and rebuilding the deck and sidewall liners with Insulcrete™ containing slots for five steel U-shaped flat bar electrodes.
A big issue with this stream is the high bedload carried during spring run-off. This has led to several modifications to the electrodes to mitigate damage.
Coordination with Idaho Fish and Game
Civil and structural design of barriers
Electrical and electronic design of the pulsators and power supply systems
Construction of the barrier
Electrode modifications for improved resistance to bedload