Solving the challenges of traditional fish passes! "Terraced Fish Pass" ★ Free Design & Construction Case Collection ★
There are papers available on the retroactive effect and performance! We also offer design proposals and drawing creation! We solve the issues of traditional fish passages, such as a 180-degree opening and maintenance-free features!
The "Terraced Rice Field Fishway" by Yamachin Group is a fan-shaped fishway that allows fish to ascend from any angle, 180 degrees. Its unique "slit pool wall structure" using pebbles ensures that the pool is shallow and does not accumulate sediment, eliminating the need for maintenance! Even with low river water levels, it secures an ascent route, and construction is simplified by just laying the terraced fishway blocks, significantly reducing the burden on the site. I conducted research on fishways at the Graduate School of Gifu University and obtained a doctorate. There is also a wealth of academic data regarding the terraced fishway, making it a highly reliable product. 【Key Points for Choosing This Product】 ■ Jointly developed patented fishway with the Ministry of Land, Infrastructure, Transport and Tourism and Yamachin Group! ■ Solves the issues of traditional fishways with a 180-degree opening! ■ Promotes fish ascent with a unique slit pool wall made of pebbles! ■ Maintenance-free structure that prevents sediment accumulation! ■ Verification of ascent by bottom-dwelling fish and aquatic insects confirmed after installation! ■ Made into concrete secondary products, ensuring quality while simplifying construction. ★ A collection of design and construction examples of the "Terraced Rice Field Fishway" from various locations across the country can be viewed by downloading the catalog below. Additionally, for those interested, we also have a paper verifying the ascent effect available.
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The "Tanada-style Fishway" by Yamachin Group is a fishway that improves the challenges of traditional fishways from various perspectives. Its effectiveness has been recognized, receiving high evaluations from local fishing cooperatives and related organizations, and it has been adopted in various locations across the country. Additionally, we have a wealth of research data, papers, and upstream results from the doctoral program in agriculture at Gifu University, so please feel free to contact us. [Examples featured in the case study collection] ◎ Ibi River Karakuri Bank Protection Project ◎ Shirakawa Tsukui Dam Fishway Improvement Project ◎ Oyanagi River Fishway Improvement Project ◎ Gifu Prefecture Eco-River Kanse River ◎ Gifu Prefecture River Maintenance and Repair Work ◎ Neogawa No. 4 Bed Stabilization Improvement Project ◎ Asukagawa River Maintenance and Repair ◎ Asukagawa Comprehensive Watershed Disaster Prevention ◎ Terayama Dam and Asama Dam Fish Species Upstream Environment Improvement Project ◎ Gifu Prefecture River Fishway Function Restoration and River Maintenance and Repair Work *Photos are included! Please check them out via "Download"!
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★For those who are interested, we also have "a paper that verifies the upstream effect" available★ Please apply through the "Contact Us" section below!
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Company information
Yamachin Group is supported by the understanding and guidance of many people, and with the corporate philosophy of "creativity, ingenuity, and tireless effort," we are committed to contributing to the local community alongside the development of our company. By engaging in civil engineering projects that involve nature, we consider how to conduct construction with respect for the natural environment, learn many lessons from it, and aim to create a "distinctive company" among numerous construction contractors. In 1991, we established the Environmental Division and began "environmental conservation activities unique to the construction industry," developing and proposing various environmental products such as natural stone block series for river environment conservation, various fishway series tailored to installation locations, and the "Hybrid Eco Pump," an underwater pump that operates without electricity. We have worked on promoting and raising awareness of environmentally friendly construction methods. Thanks to this, we have been adopted in numerous projects, and we are grateful to be contributing to environmental conservation. Yamachin Group will continue to take on challenges through the construction industry, working on "proposals dedicated to the natural environment of our hometown" and contributing to global environmental conservation.