Vertical slot fishway examples:
1. Left: keyhole slot design in a vertical slot fishway, Yallakool Creek, New South Wales
2. Middle: precast concrete rectangular vertical slot baffle, showing rocky base of fishway and metal grate overhead, Yallakool Creek, New South Wales
3. Top-right: vertical slot fishway, showing rectangular slot design, Sheepstation Creek, Ayr, Queensland
4. Bottom-right: metal keyhole slot design in vertical slot fishway baffle, Chowilla Regulator, South Australia
Photo by Ivor Stuart (1,2 and 4), and Tim Marsden (3)
Vertical slot fishways maintain constant velocity and turbulence levels throughout the fishway at varying river flows and are able to operate over a relatively wide range of headwater and tailwater levels[1].
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Suitability and limitations
Vertical slot fishways typically allow a broad range of fish species to pass when appropriately designed, but can be expensive to construct.
^ O’Connor, J, Stuart, I & Mallen-Cooper, M (2015), 'Performance, operation and maintenance guidelines for fishways and fish passage works', Trove. [online] Available at: https://nla.gov.au/nla.obj-480267623 [Accessed 10 November 2020].
Last updated: 10 May 2021
This page should be cited as:
Department of Environment, Science and Innovation, Queensland (2021) Vertical slot fishway – Key considerations , WetlandInfo website, accessed 27 March 2025. Available at: https://wetlandinfo.des.qld.gov.au/wetlands/management/fish-passage/technologies/fishway-options/vertical-slot/key-considerations.html
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— Department of the Environment, Tourism, Science and Innovation
