Difficulties with existing fish passes and their renovation. The pool fish pass on Dłubnia river in Krakow

Abstract

Aim of the study: The aim of the work is to determine the work of a pool pass located on the Dłubnia River and attempt to determine repair recommendations that will work properly and will not be an obstacle for migrating fish. Material and methods: Field work. Identification of passages elements that may limit fish flow based on standards that give typical geomteric dimensions. An attempt to determine its repair. Results and conclusions: The fish pass is not working properly. The work presents repair recommendations.

Keywords

• repair
• fish pass
• weir
• effectiveness of fish pass