Transpassability of dams, and the fish passes

Migratory fish are vulnerable species whose populations in all the European basins have diminished considerably in recent decades.    Although there are many contributory causes


(deterioration of the water quality and the habitats, for instance), the preponderant reason is the increase in the number of dams on the waterways.    Strategies for restoring these fish populations have to be led at various international and regional levels.   Locally, fish passes and other such expedients to enable the migratory species to surmount the dams, and then to get back downstream after spawning, are essential but difficult to get installed.

Main documents
Migratory fish6/27/08
Atlas migrateurs9/1/04
Other documents
Migration anadrome2/3/09
Migratory fish on the Dordogne basin10/14/08
fish pass and monitoring10/14/08
Présentation passes à poissons Hongrie10/14/08
Information letter - aquatic milieux9/1/05
Main documents
Migratory fish6/27/086/27/086/27/080Ko  
Atlas migrateursEPIDOR9/1/046/26/086/27/0830Koappli    
Other documents
Migration anadromeEDF2/3/092/4/092/4/090Ko  
Migratory fish on the Dordogne basinGUERRI10/14/0812/5/0812/5/0816.38Moappli    
fish pass and monitoringCHANSEAU10/14/0812/3/0812/3/0812.53Moappli      
Présentation passes à poissons HongrieDUNAI10/14/0812/3/0812/3/080Ko        
Information letter - aquatic milieux9/1/056/26/086/27/0823Koappli    
Main perso
Breinig Thomas Engineer in charge of quantitative water
GUERRI Olivier Engineer in charge of migratory
DOCUMENTS List mode Full mode Main persons and useful links