Bypass fishway

Bypass fishway – Planning and design

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• Overview
• Key considerations
• Planning and design
• Construction and operation
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In addition to the general information for all fishway types, the following applies to bypass fishways.

Slope

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.).

References

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: http://nla.gov.au/nla.obj-664261559 [Accessed 25 February 2021].

Last updated: 10 May 2021