Abstract: A system and method for guiding fish that migrate is provided. A preferred embodiment is affixed to a dam having intakes that: a) generate hydroelectric power and b) serve as a natural hydraulic cue for fish that, once attracted to the intake, may be injured or killed traversing the intake. A device resembling an oversize kitchen exhaust fan hood, with extension, is affixed adjacent the upstream side of a stream barrier that otherwise precludes fish from safely passing. The device simulates a naturally occurring hydraulic cue that fish use to migrate and may be used to defeat competing detrimental hydraulic cues. Also provided are embodiments to enable adjustment of the device to meet changing hydraulic conditions; to preclude the accidental provision of competing negative cues or stimuli; and to complement the simulated natural hydraulic cue provided by the device through using stimuli such as light, sound or combinations thereof.

Abstract: A system and method for guiding fish that migrate is provided. A preferred embodiment is affixed to a dam having intakes that: a) generate hydroelectric power and b) serve as a natural hydraulic cue for fish that, once attracted to the intake, are converted to pet food. A device resembling an oversize kitchen exhaust fan hood, with extension, is affixed adjacent the upstream side of a stream barrier that otherwise precludes fish from safely passing. The device simulates a naturally occurring hydraulic cue that fish use to migrate and may be used to defeat competing detrimental hydraulic cues. Also provided are embodiments to enable adjustment of the device to meet changing hydraulic conditions; to preclude the accidental provision of competing negative cues or stimuli; and to complement the simulated natural hydraulic cue provided by the device through using stimuli such as light, sound or combinations thereof.

Abstract: A method for determining the probable response of aquatic species to selected components of water flow fields, comprising the steps of obtaining data for identifying travel and quantitatively describing behavior of real fish constituting members of a selected aquatic species in a flow field, determining passive transport trajectories of the members of the aquatic species in the flow field to establish a basis from which to determine swim path selections, developing postulated behavioral responses of members of the aquatic species to at least one of hydraulic and acoustic stimuli, using statistical rules, and developing a computer utilizing the travel behavior data, the passive transport trajectories, and the postulated behavioral responses, to provide a virtual fish.