Rock ramp with pool structures
From BAWiki
Definition
A nature-like design of the vertical slot pass. Between the pools there are sills of rocks which are spaced at different intervals.
Synonyms
Abbreviations
Source
Guideline Upstream Fishways on German Federal Waterways (AH FAA), Bundesanstalt für Wasserbau (BAW) und Bundesanstalt für Gewässerkunde (BfG), Version 2.0, 26/06/2015 (retrieved 10.05.2017)