METHOD TO TAKE AWAY SPAWN AND YOUNG FISH FROM WATERWAY AND FISH-PASSING SPAWNING CHANNEL FOR METHOD REALIZATION (VARIANTS) Russian patent published in 2006 - IPC E02B8/08 

FIELD: hydraulic building, particularly structures adapted to permit brood fish passage through support structures to fish hatchery and growth areas.

SUBSTANCE: method involves transporting spawn and young fish present in waterway by air-bubble curtain plume to upper flow layer; trapping spawn and young fish with the use of fish diverting tray and taking away fish outside the waterway influence zone. To move spawn and young fish into the fish diverting tray the tray is submersed in waterway and lower edge thereof facing water flow is moved below lower border of air-bubble curtain plume. During fish diverting tray installation in working position water intake orifices thereof are aligned with inlet orifices of fish diverting means and opened to convey spawn and young fish in larval pond. After spawn and young fish diverting operation termination the tray is lifted from waterway and inlet orifices of fish diverting means are closed. Above method may be implemented with the use of two embodiments of fish-passing spawning channel.

EFFECT: increased efficiency of hydraulic conditions for spawn and young fish accumulation and diverting.

9 cl, 14 dwg