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Water Engineering Lab
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A lab that aims to restore the health of water environments in coastal areas and rivers.
AboutAbout the lab
Aiming for healthy water environments and sustainable water systems
The Water Engineering Lab studies water environments such as coastal areas, brackish lakes, and urban rivers.
Its goals are the creation of healthy water environments and the building of sustainable water systems.
The lab works on predicting the future of water environments in river basins, analyzing the flow and water quality of enclosed sea areas, and developing new techniques for analyzing water environments.
On the lab's website, it is also introduced under the name "Mizu-ken."
Key terms
- Data assimilation
- A method of incorporating observational data into simulation calculations.
- Enclosed sea area
- A sea area, such as a bay, that is surrounded by land and where water is slow to be exchanged with the outer sea.
- Brackish lake
- A lake where freshwater from rivers mixes with saltwater from the sea.
ResearchResearch themes
The Water Engineering Lab aims to create healthy water environments and build sustainable water systems. It conducts research on the restoration, creation, and improvement of water environments in river basins, as well as on the water flow, water quality, and material cycles of enclosed sea areas.
*Illustrative imageRestoring and Improving Water Environments in River Basins
The lab investigates the mechanisms of water pollution in urban rivers and techniques to improve it, as well as the flow of water and materials in urban areas. It predicts how basin environments will change with climate change and urban development, and conducts research toward impact assessments and proposals for adaptation measures.
*Illustrative imageFlow, Water Quality, and Material Cycles in Enclosed Sea Areas
Using data assimilation, the lab improves simulations of water flow and water quality, and studies the circulation of water and materials and management measures for enclosed bays. It has also developed systems that predict the positions of drifting debris and water quality in real time, which are useful for environmental conservation and disaster prevention.
*Illustrative imageDeveloping New Techniques for Analyzing Water Environments
The lab develops methods for optimizing the parameters of ecosystem models using polynomial chaos expansion, as well as methods for analyzing water environments using deep learning. It has also introduced an underwater spectrophotometer and carries out detailed continuous observation of nutrients in coastal areas.
MembersFaculty
The members of the Water Engineering Lab consist of faculty, project researchers, research students, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorMasayasu Irie
- Associate ProfessorYusuke Nakatani
- Assistant ProfessorChihiro Kashima
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: “The Szczecin Lagoon at the mouth of the Oder River (P- )” Copernicus Sentinel-2 imagery, EK - GD DEFIS, EC - DG DEFIS, SPACETEC PARTNERS, CE - DG DEFIS / CC BY 4.0 (cropped)
- Restoring and Improving Water Environments in River Basins: “Restoring an urban stream (after) ( )” U. S. Fish and Wildlife Service - Northeast Region / Public domain (cropped)
- Flow, Water Quality, and Material Cycles in Enclosed Sea Areas: “Wfm kansai overview” NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team / Public domain (cropped)
- Developing New Techniques for Analyzing Water Environments: “Water testing contaminated water from lake” Environment Protection Authority Victoria / CC BY 4.0 (cropped)
- Related lab (Structural Engineering Lab): “Fledborough viaduct welded steel bridge girders - geograph.org.uk - 4728457” Steve Fareham / CC BY-SA 2.0 (cropped)
- Related lab (Geotechnical Engineering Lab): “Ground works by the A63, Hull - geograph.org.uk - 6683590” Paul Harrop / CC BY-SA 2.0 (cropped)
- Related lab (Ship and Ocean Fluid Engineering Lab): “Convair Negative Image - Tow basin ship model in tank )” San Diego Air & Space Museum Archives / Public domain (cropped)
- Related lab (Land Development and Conservation Engineering Lab): “Storm Surge at Newhaven Lighthouse, East Sussex, UK” B.Hawkins.Cornwall / CC BY-SA 4.0 (cropped)
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