Fishway block - List of Manufacturers, Suppliers, Companies and Products

Fishway Block Spiral Fishway

This is a fish passage constructed in a spiral shape by stacking blocks that divide the circumference to match the drop height of dams and weirs. This method is implemented with permission from Obayashi Corporation and Obayashi Road Corporation. 【Features】 ○ The ice harbor type and full overflow type can accommodate a wide range of fish species. ○ The circular and spiral shape minimizes the occupied area, allowing for the installation of fish passages up to approximately 10 meters in height. ○ The assembly type using common blocks offers excellent workability. ○ The higher the installation height, the lower the cost per height compared to site-cast stair-type fish passages. *Please contact us for more details.

Company：ケイコン
Price：Other

Spiral staircase
Tunnel construction
Airport facilities

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction in Shirakawa, Kumamoto Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of traditional fishways.

In conventional fishways, there were challenges such as difficulty in guiding fish to upstream routes and sediment accumulation within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which has a unique shape utilizing natural stones. We also provide explanations about the terraced rice field fishway, consultations on fishway design (such as creating drawings and quantity calculation sheets), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: Heisei 14 Year Shirakawa Tsukui Te Dam Fishway Improvement Project ■ Construction Location: Shirakawa (Jinnai, Ozu Town, Kikuchi District, Kumamoto Prefecture) ■ Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction due to the 180-degree design, preventing fish stagnation. ■ It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Thanks to its unique structure that can adapt to changes in water levels, it allows water to flow from the collection ditch beneath the floor during low water conditions. ■ By realizing the concrete secondary productization as terraced rice field fishway blocks, we have achieved stable quality and simplified construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction on the Ibi River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of conventional fishways.

In conventional fishways, there have been challenges such as difficulty in guiding fish to upstream routes and the accumulation of sediment within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which features a unique shape utilizing natural stones. We also provide explanations about the terraced rice field fishway, consultations on fishway design (such as drawing creation and quantity calculation), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■Project Name: Heisei 16 Fiscal Year Ochiai Riverbank Disaster Recovery Work ■Construction Location: Ibi River (Ochiai area, Ibi Town, Ibi County, Gifu Prefecture) ■Construction Photos: Please see the construction photos on this page. 【Reasons to Choose the "Terraced Rice Field Fishway"】 ■Fish can ascend from any direction due to its 180-degree accessibility, preventing fish stagnation. ■It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■Thanks to its unique design that can adapt to changes in water levels, it allows water to flow from the collection ditch under the floor during low water periods. ■By realizing concrete secondary products as terraced rice field fishway blocks, we have achieved stable quality and simplified construction for fishways. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction at the Kanase River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of traditional fishways.

In conventional fishways, there are challenges such as difficulty in guiding fish to upstream routes and the accumulation of sediment within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which features a unique shape utilizing natural stones. We also provide explanations of the terraced rice field fishway, consultations on fishway design (including drawing creation and quantity calculation), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: Eco 3-2 No. 2, Prefectural Eco River, Kase River, etc. ■ Construction Location: Kase River (Yabuki Town, Ibi County, Gifu Prefecture, near Tanigumi Nagase) ■ Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction due to the 180-degree design, preventing fish stagnation. ■ It features a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Its unique structure can accommodate changes in water levels, allowing water to flow from the collection ditch beneath the floor during low water periods. ■ By realizing the concrete secondary productization as terraced rice field fishway blocks, we have achieved stable quality and simplified construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction on the Kanase River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of conventional fishways.

In traditional fishways, there were challenges such as difficulty in guiding fish to upstream routes and sediment accumulation within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Fishway," which features a unique shape utilizing natural stones. We also provide explanations about the terraced fishway, consultations on fishway design (such as drawing creation and quantity calculation), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■Project Name: Prefectural Eco-River Kanse River and others ■Construction Location: Kanse River (Tachikubo Kiso-ya, Ibi-gun, Ibi-cho, Gifu Prefecture) ■Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Fishway"】 ■Fish can ascend from any direction due to the 180-degree design, preventing fish stagnation. ■It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■Thanks to its unique structure that can adapt to changes in water levels, it allows water to flow from the collection ditch below the floor during low water conditions. ■By realizing the concrete secondary productization as terraced fishway blocks, we have achieved stable quality and simplified construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction at the Kanase River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of conventional fishways.

In conventional fishways, there were challenges such as difficulty in guiding fish to upstream routes and sediment accumulation within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which has a unique shape utilizing natural stones. We also provide explanations about the terraced rice field fishway, consultations on fishway design (such as creating drawings and quantity calculation sheets), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: Daiwa Repair No. 5 Prefectural River Maintenance and Repair Work ■ Location: Kanase River (Tani-gumi Nagase, Ibi-gun Ibigawa Town) ■ Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction due to the 180-degree design, preventing fish stagnation. ■ It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Its unique structure can accommodate changes in water levels, allowing water to flow from the collection ditch under the floor during low water periods. ■ By realizing the concrete secondary productization as terraced rice field fishway blocks, we have achieved stable quality and simple construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction on the Asukagawa River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of traditional fishways.

In conventional fishways, there are challenges such as difficulty in guiding fish to upstream routes and the accumulation of sediment within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which has a unique shape utilizing natural stones. We also provide explanations about the terraced rice field fishway, consultations on fishway design (such as creating drawings and quantity calculations), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: River Maintenance and Repair No. 10 ■ Construction Location: Asukagawa River (Tani-gumi, Ibi-gun, Gifu Prefecture) ■ Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction due to the 180-degree design, preventing fish from stagnating. ■ It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Thanks to its unique structure, it can respond to changes in water levels, allowing water to flow from the collection ditch below the floor during low water periods. ■ By realizing the concrete secondary productization as terraced rice field fishway blocks, we have achieved stable quality and easy construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Rice Field Fishway": Fishway design/construction on the Asukagawa River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of traditional fishways.

In conventional fishways, there have been challenges such as difficulty in guiding fish to upstream routes and the accumulation of sediment within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which has a unique shape utilizing natural stones. We also provide explanations about the terraced rice field fishway, consultations on fishway design (such as drawing creation and quantity calculation), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: River Maintenance and Repair No. 9 ■ Construction Location: Asukagawa River (Tani-gumi, Ibi-cho, Ibi-gun, Gifu Prefecture) ■ Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction due to the 180-degree design, preventing fish from lingering. ■ It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Thanks to its unique structure that can adapt to changes in water levels, it allows water to flow from the collection channel beneath the floor during low water periods. ■ By realizing the concrete secondary productization as terraced rice field fishway blocks, we have achieved stable quality and simplified construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Rice Field Fishway": Fishway design/construction on the Asukagawa River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of traditional fishways.

In traditional fishways, there were challenges such as difficulty in guiding fish to upstream routes and sediment accumulation within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which features a unique shape utilizing natural stones. We also provide explanations about the terraced rice field fishway, consultations on fishway design (such as drawing creation and quantity calculation), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: No. 1 Public Comprehensive River Basin Disaster Prevention (River Environment Project) ■ Construction Location: Asukagawa (Gifu Prefecture) ■ Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction due to the 180-degree design, preventing fish stagnation. ■ It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Its unique structure can respond to changes in water levels, allowing water to flow from the collection ditch below the floor during low water periods. ■ By realizing concrete secondary products as terraced rice field fishway blocks, we achieved stable quality and simplified construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Rice Field Fishway" case: Fishway design/construction on the Iruma River in Saitama Prefecture.

[Case Study] Improving upstream migration efficiency with a unique design! The terraced fishway solves the issues of traditional fishways.

In conventional fishways, there were challenges such as difficulties in guiding fish to upstream routes and sediment accumulation within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which features a unique shape utilizing natural stones. We also provide explanations about the terraced rice field fishway, consultations on fishway design (such as drawing creation and quantity calculation), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■Project Name: Improvement of Fish Migration Environment at Terayama Weir and Asama Weir, No. 201 Iruma River ■Construction Location: Iruma River (Saitama Prefecture) ■Construction Photos: Please see the construction photos on this page. 【Reasons to Choose the "Terraced Rice Field Fishway"】 ■Fish can migrate from any direction due to the 180-degree design, preventing fish stagnation. ■It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■Thanks to its unique structure, it can respond to changes in water levels, allowing water to flow from the collection ditch below the floor during low water periods. ■By realizing the concrete secondary productization as terraced rice field fishway blocks, it achieves stable quality and simple construction as a fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction on the Asukagawa River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the challenges of traditional fishways.

In conventional fishways, there were challenges such as difficulty in guiding fish to upstream routes and the accumulation of sediment within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which has a unique shape utilizing natural stones. We also provide explanations about the terraced rice field fishway, consultations on fishway design (such as creating drawings and quantity calculation sheets), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: Daiwa Fish 1, River Repair No. 3, Prefectural River Fishway Function Restoration 　　　　　River Maintenance and Repair (Safety and Security Measures for Living) Project ■ Construction Location: Asukagawa (Gifu Prefecture) ■ Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction at 180 degrees, preventing fish from stagnating. ■ It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Its unique structure can respond to changes in water levels, allowing water to flow from the collection ditch under the floor during low water periods. ■ By realizing the concrete secondary productization as terraced rice field fishway blocks, we achieved stable quality and simple construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

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.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Terraced fishway [Upstream migration rate is about three times! Prevents fish stagnation!]

A terraced fishway that achieves a threefold upstream migration rate! Fish can ascend from any direction at 180°, preventing their stagnation!

The terraced fishway has a 180-degree opening that is not found in traditional fishways, allowing fish to ascend from anywhere within the fishway. In our own ascent survey, approximately 70 percent of the fish ascended from both sides of the fishway, and it has been confirmed that fish can ascend without lingering. 【Features】 ■ Fish can ascend from anywhere with a 180-degree opening, preventing fish from lingering. ■ It has a maintenance-free structure that prevents sediment accumulation. ■ During low water periods, water is drawn from the collection ditch beneath the floor. ■ It achieves stable quality and simple construction as a fishway. *For more details, please request materials or view the PDF data available for download.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction on the Neo River in Gifu Prefecture.

[Case Study] Improving upstream efficiency with a unique design! The terraced fishway solves the issues of traditional fishways.

In traditional fishways, there were challenges such as difficulty in guiding fish to upstream routes and sediment accumulation within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which features a unique shape made from natural stones. We also provide explanations of the terraced rice field fishway, consultations on fishway design (including drawing creation and quantity calculation), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: 1999 Neogawa Karakuri River Bank Protection Work ■ Location: Neogawa River (Ono Town, Ibi County, Gifu Prefecture, vacant land) ■ Construction Photos: Please see the construction photos on this page. 【Points for Choosing the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction due to the 180-degree design, preventing fish stagnation. ■ It has a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Its unique structure can accommodate changes in water levels, allowing water to flow from the collection ditch beneath the floor during low water periods. ■ By realizing the concrete secondary productization as terraced rice field fishway blocks, we have achieved stable quality and simple construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Introduction of the "Terraced Fishway" case: Fishway design/construction on the Makita River in Gifu Prefecture.

[Case Study] Improving upstream migration efficiency with a unique design! The terraced fishway solves the challenges of traditional fishways.

In conventional fishways, there were challenges such as difficulty in guiding fish to the upstream route and the accumulation of sediment within the fishway, which reduces its functionality. These issues are addressed by Yamatazumi's "Terraced Rice Field Fishway," which has a unique shape utilizing natural stones. We also provide explanations of the terraced rice field fishway, consultations on fishway design (such as creating drawings and quantity calculation sheets), proposals, and assistance, so please feel free to contact us. 【Case Study】 ■ Project Name: Heisei 12 Year Makita River No. 13 Bed Stabilization Terraced Rice Field Fishway Installation Project ■ Construction Location: Makita River (Gifu Prefecture) ■ Construction Photos: Please see the construction photos on this page. 【Reasons to Choose the "Terraced Rice Field Fishway"】 ■ Fish can ascend from any direction due to the 180-degree design, preventing fish from lingering. ■ It features a maintenance-free structure that prevents sediment accumulation inside the fishway. ■ Its unique structure can accommodate changes in water levels, allowing water to flow from the collection ditch directly beneath the bed stabilization during low water periods. ■ By realizing the concrete secondary productization as terraced rice field fishway blocks, we achieved stable quality and simplified construction for the fishway. *For more details, please contact us or download the catalog to view.

Company：山辰組
Price：Other

Airport facilities
River construction

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Fishway block - List of Manufacturers, Suppliers, Companies and Products

Fishway block Product List