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Bypass fishway

Bypass fishway – Planning and design

Bypass channel fishway, Baldwin Swamp, Bundaberg, Queensland Photo by Tim Marsden

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In addition to the general information for all fishway types, the following applies to bypass fishways.


The gradient of bypass fishways is typically 1:50 (vertical:horizontal),[1] however some newer hybrid designs have been successful with a gradient of 1:40 (Andrew Berghuis pers comm.). Resting pools are typically used for every 1 m rise in vertical elevation[1] and some designs include oversized resting pools with a range of habitats that provide habitat complexity, and associated protection from predation and resting habitat for all expected species and size classes (Andrew Berghuis pers comm.).

Disclaimer: In addition to the standard disclaimer located at the bottom of the page, please note the Fishways (biopassage structures) disclaimer.


  1. ^ a b O'Connor, J, Stuart, I, Jones, M & Arthur Rylah Institute for Environmental Research (2017), Guidelines for the design, approval and construction of fishways. [online] Available at: [Accessed 25 February 2021].

Last updated: 10 May 2021

This page should be cited as:

Department of Environment, Science and Innovation, Queensland (2021) Bypass fishway – Planning and design, WetlandInfo website, accessed 18 March 2024. Available at:

Queensland Government
WetlandInfo   —   Department of Environment, Science and Innovation