Abstract: A method for enhancing or generating a water flow current by the generation of a velocity head differential, to guide fish, including: a venturi eductor to induce higher water pressures; a pump, piping or other motive water source; an adjustable frame to mount the venturi eductor; and a method of using this equipment. Fish may be guided into or away from a waterway area by generating or enhancing a current to guide them. The apparatus may be used as a method to guide fish through low velocity areas of a river, lake, reservoir or other waterway. The apparatus may also be used as a method to create water flow velocities that fish are reluctant to pass through for a barrier or curtain to further guide the fish. The apparatus and method may also be used to transfer temperature-variant water in a waterway.

Abstract: A method and system allowing fish to migrate upstream and downstream, bypassing dams, obstructions, either man-made or natural, safely, freely and in a natural manner. The system consists of a meandering “nature-like” channel constructed of pneumatically placed concrete, shotcrete or gunite that simulates a waterway bed condition. The construction of riffles, ledges, undercut banks and other natural-like features to provide a foundation for the placement of fish habitat, such as gravel beds, boulders, logs, and the like. The placement of sand, gravel, cobbles and such to create and provide an aquatic environment to sustain plant and aquatic life. The introduction of plants and other aquatic life to provide forage, cover and a year around natural-like environment within a river or stream-like migratory bypass channel.