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US 5,161,913 AGranted
Method and apparatus for migratory fish passage to the sea
AssigneesEugene B. Campbell, Delmer R. Boylan
InventorDelmer R. Boylan
Life of this patent
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AssigneesEugene B. Campbell, Delmer R. Boylan
InventorDelmer R. Boylan
Estimating the term…
A method and apparatus for passing migratory fish by dams to the sea. The method includes the creation of a water flow within a main conduit and in one or more collection conduits flowing into the main conduit from spawning areas; lighting the interior of the tubes by artificial lights to attract the fish and keep the fish moving downstream within the conduits; and emptying the fish and water on the downstream side of a dam, preferably by siphoning the water and fish over the dam. The apparatus includes the collection conduits; the main conduit receiving input from the collection conduits; pumps for creating water flow; a lighting system within the conduits; a siphon over the dam; and an open flume for non-pressurized passage of the fish down to the downstream level below the dam. Where more than one dam is encountered, the flume empties into a continuation of the main conduit which, eventually, empties into a screened enclosure for acclimating the fish to brackish waters, while preventing feeding by predators. The apparatus may also include trash deflectors over the entries to the collection conduits; monitors; oxygenators; and rest areas.
A method for transporting migratory fish downstream of a dam comprising the steps of:
Apparatus for transporting migratory fish downstream of a dam comprising:
Apparatus for transporting migratory fish downstream of a dam comprising:
Dependencies are inferred from the claim text.