Fishway concept design: Sleng Dam, Cambodia

Tim Marsden, Chann Aun Tob, Sarun Hay, Nathan Battey, Martin Mallen-Cooper, Peter Thew, John Conallin, L.J. Baumgartner

Research output: Book/ReportCommissioned report (public)

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Key considerations for the design of a fishway at a 1.4m high Sleng Weir.
1. Sleng Weir is a 1.4m high weir located 45min west of Siem Reap.
2. The site survey and interviews with local operators and fishermen indicates that the site is suitable for multiple fishway designs.
3. The two most promising design options for Sleng Weir are the vertical slot and cone fishway designs.
4. These designs are suitable for fish ranging from 50mm to 500mm in size and operate across the full range of flows at the site.
5. The design is based on the assumption that the upstream cheater boards will not be used in the future as outlined by the local operators.
6. Before finalizing the design and tender, it is crucial to investigate the foundations to ensure they are suitable for the proposed fishway.
By considering these factors, the project team has developed a fishway design that effectively facilitates fish passage over the weir while ensuring that the design is safe and durable, provides educational opportunities at the site and meets the FishTech project objectives for effective fish passage and maintenance of fisheries production for local communities.
Original languageEnglish
Place of PublicationAustralia
PublisherCharles Sturt University
Commissioning bodyAustralian Centre for International Agricultural Research (ACIAR)
Number of pages33
Publication statusPublished - Mar 2023


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