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River Basin Management Engineering Lab
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The lab clarifies how rain flows out into rivers and considers how to manage rivers and river basins.

AboutAbout the lab
Toward lives in harmony between people and water.
The River Basin Management Engineering Lab studies the movement of water in rivers and river basins.
It clarifies the pathways by which rain falling on a basin flows out into rivers, and builds mathematical models that predict that flow.
On that basis, it considers river and basin management to prevent and reduce water problems such as floods and droughts.
The main research method is numerical analysis, and the lab also makes field observations during flood events.
Key terms
- Mathematical model
- A representation of how a phenomenon works in mathematical equations, allowing it to be calculated on a computer and predicted
- Tracer
- A substance contained in water that is used as a marker, a clue for finding out where the water has passed and how long it took to flow there
- Hazard map
- A map showing where and how much damage is likely to occur when a disaster such as a flood takes place
NewsLab news
Two students won Outstanding Academic Presentation Awards at the Kansai Civil Engineering Exchange Conference
A student won the Student Best Poster Award at AOGS 2024
An undergraduate student was selected for an Outstanding Presentation Award for a graduation thesis
ResearchResearch themes
Focusing on the movement of water and of people within river basins, the lab studies river and basin management based on understanding and predicting them. It aims to support a society that is comfortable to live in, where people and water are in harmony.
*Illustrative imageModeling Rainwater Movement on Mountain Slopes
For urban flood disaster prevention, accurately predicting rainwater flowing out of mountain areas is important. The lab computes using mathematical models that consider topography, geology, and soil in detail, and from the results develops simpler models that can be used at the scale of an entire basin.
*Illustrative imageTracing Flow Paths with Substances in Water
It is still not well understood whether water that has flowed into a river is rain that fell just now or rain from many months ago. Using substances contained in the water as tracers, the lab investigates the paths and travel times of rainwater and applies the results to models of water movement in basins.
*Illustrative imageRiver and Basin Management Resilient to Water Problems
Floods and droughts occur where human society and the water cycle intersect. The lab explores effective approaches by expressing water disaster risk numerically and presenting it like a hazard map, and by analyzing the advantages and disadvantages of management measures such as building regulations.
MembersFaculty
The lab's members consist of faculty, and doctoral, master's, and undergraduate students.As of 2025
- ProfessorYutaka Ichikawa
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: “Bergtocht van S-charl naar Alp Sesvenna. . (d.j.b) 25” Dominicus Johannes Bergsma / CC BY-SA 4.0 (cropped)
- Modeling Rainwater Movement on Mountain Slopes: “Misty coniferous forest on a slope (Unsplash)” Jon Flobrant jonflobrant / CC0 (cropped)
- Tracing Flow Paths with Substances in Water: “Fukushima Sea Water Sampling- )” IAEA Imagebank / CC BY-SA 2.0 (cropped)
- River and Basin Management Resilient to Water Problems: “9986Pampanga River from Apalit-Arayat Setback Levee 04” JFVelasquez Floro / CC0 (cropped)
- Related lab (Geomechanics Lab): “Soil sample Château d’Yquem, Sauternes” Megan Mallen / CC BY 2.0 (cropped)
- Related lab (Environmental Health Lab): “Air pollution amid blue skies, the day after reopening from lockdown near Mumbai” Sumaira Abdulali / CC BY-SA 4.0 (cropped)
- Related lab (Hydrological Cycle Engineering Lab): “September 1988 Flood, Evacuations, Greymouth. CC321” John Charlton / CC BY-SA 4.0 (cropped)
- Related lab (Regional Water Environment Systems Lab): “Inca canal at Pampacahuana” Sashimi-b / CC BY-SA 4.0 (cropped)
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