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Belaud, A., R. Labat, D. Trivellato and G. Tison (1987). [Hydraulic and ichthyological experiments with an automatic trapping system for migrating fish at Golfech]. Pages 73-80 in Definition and Efficiency Control of Fishways, Paris (France), de la Societe Hydrotechnique de France et l'Agence de Bassin Loire-Bretagne.
Previous studies relating to the frequent visits of migrating fish in the outlet of the Golfech complex have illustrated the need to build an automatic crossing device. To produce a current which would attract fish, experiments on a reduced model have been firstly carried out and are intended to define (installation, flowrate, speed and swell) characteristics of the improvements required. After the partial completion of the automatic trap, the 1985 migration season has proved how efficient the system is for Salmonoidea and for Alosa during the peak migration period. As regards smaller affluxes, the jet remains attractive but the speed needs to be increased inside the passage of storage tanks in order to drive the alosa into the trap.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/data_library/fisheries/fish_passage/belaud.html
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