Author(s): Ismail Albayrak; Andris Wyss; Adriano Lais; Mohammadreza Maddahi; Alfredo Scherngell; Roland Sutter; M. Boes Rober

Linked Author(s): Ismail Albayrak

Keywords: Multi-structure vertical slot fishway; Fishway hydraulics; Attraction flow; Auxiliary water system

Abstract: This study evaluates the influence of attraction flows provided by two auxiliary water systems (AWS) on the hydraulic conditions at two entrances of the fishway at the low-head run-of-river hydropower plant (HPP) Dietikon located on the Limmat River in Switzerland. The fishway comprises 31 regular pools and is designed as a multi-structure vertical slot pass with alternating two slots per pool. It has a surface-level entrance (SE) immediately downstream of the powerhouse outlet, as well as a main entrance (ME) connected to the riverbed

DOI: https://doi.org/10.64697/iahr.proc.ise2026.abs.185

Year: 2026