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Watershed Systems Engineering Lab
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A lab that puts river and watershed restoration and community building into practice.
AboutAbout the lab
Studying systems where nature and human activity merge
The Watershed Systems Engineering Lab conducts research and education on systems in which nature and human activity merge, with water as the medium.
Its foundation is engineering, but it aims to be a new field that merges the boundaries of a wide range of disciplines, including the humanities, natural sciences, agriculture, and ecology.
Its work ranges from research on applied ecological engineering and sediment hydraulics to research on consensus building, landscape, and flood damage.
The lab also works with citizens and government agencies to put actual river restoration and community building into practice.
Research is carried out through field surveys and observations, physical model experiments, interviews and questionnaires, and workshops.
Key terms
- Applied ecological engineering
- A field that considers the environments where organisms live together with engineering methods such as river engineering
- Consensus building
- The process in which the people involved, such as residents and government agencies, discuss and bring together their opinions before a project such as river restoration goes ahead
- Circuitous irrigation channel
- Irrigation structures built in the Edo period when the Kurume and Yanagawa domains competed to draw water for rice farming into their own territories
- Dry stone masonry revetment
- A revetment (a structure that protects a riverbank) built with traditional stone masonry techniques
NewsLab news
The lab won the Best Prize of the Good Life Award, Minister of the Environment Award
The lab won the Social Practice Award from the Ecology and Civil Engineering Society
The lab's activities won the Engineering Education Award, Minister of Education, Culture, Sports, Science and Technology Award
The lab published a paper in Biodiversity Data Journal showing that circuitous irrigation channels are an important habitat for a rare fish
ResearchResearch themes
The lab's research centers on questions such as how to make river and watershed systems healthy and how to build a land where living organisms and people can live richly, and it aims to be useful in answering them. Most of its research targets concrete, real-world subjects, and benefiting society is the basis of its research.
*Illustrative imageRiver restoration together with citizens and government
The lab works with citizens and government agencies on practical river restoration and community building, mainly in Kyushu. Its activities include design proposals for rivers and river structures, small hand-built nature restoration projects, consensus building in disputes between citizens and government, and environmental education.
*Illustrative imageCircuitous irrigation channels supporting a rare fish habitat
In joint research with WWF Japan, the lab surveyed the habitat of the Ariake-gibachi catfish in the Yabe River basin in Fukuoka Prefecture and found that the "circuitous irrigation channels," irrigation structures built in the Edo period, are an important habitat for it. The lab attributes this to the water management methods and hydraulic characteristics unique to these channels.
*Illustrative imageFlood control functions of traditional stone masonry
The lab studies the role that traditional Japanese techniques, such as dry stone masonry revetments, play in flood control. It examines the washing out of backfill material behind revetments through hydraulic experiments, and uses numerical simulation to verify watershed-wide flood management that employs flood-flow control technologies.
MembersFaculty
The members of the Watershed Systems Engineering Lab consist of faculty, technical staff, academic researchers, and students.
- Associate ProfessorHironori Hayashi
- Assistant ProfessorHiroshi Takata
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “River Vishwamitri eco Restoration 01” Santhemant / CC BY 4.0 (cropped)
- River restoration together with citizens and government: “Connecticut River restoration Farilee VT6” 作者不詳 / Public domain (cropped)
- Circuitous irrigation channels supporting a rare fish habitat: “Fish ladder in Kose, Estonia” Sillerkiil / CC BY-SA 4.0 (cropped)
- Flood control functions of traditional stone masonry: “2022 Munai Stone Fish Weir D2” Taiwankengo / CC BY-SA 4.0 (cropped)
- Related lab (生態工学研究室): “Florida Keys National Marine Sanctuary cormorants roosting in mangrove roots” David J. Ruck, National Oceanic and Atmospheric Administration / Public domain (cropped)
- Related lab (環境流体力学研究室): “Surface waves” Roger McLassus / CC BY-SA 3.0 (cropped)
- Related lab (建設設計工学研究室): “Steel girder and concrete blockwork bridge - geograph.org.uk - 6101986” Alan Hughes / CC BY-SA 2.0 (cropped)
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