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Natural and Social Environment Disaster Prevention Planning Lab
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The lab considers the balance among flood control, water use, and the environment to protect and nurture river basins.

AboutAbout the lab
Toward river basins teeming with life
The Natural and Social Environment Disaster Prevention Planning Lab studies how to manage river basins while balancing flood control, water use, and the environment.
It analyzes how changes in the natural and social environment affect water resources, and develops techniques for ecosystem-based disaster risk reduction and for restoring nature along rivers.
There are two lab seminars, and students choose one when they are assigned to a lab: the Taki-Kobayashi lab seminar, which is conducted in Japanese and mainly deals with river basins in Japan, and the Kantoush lab seminar, which is conducted in English and mainly deals with river basins overseas.
The lab is part of the Water Resources Research Center at the Disaster Prevention Research Institute, and is also called the Social and Ecological Environment Research Division (Taki Lab).
Key terms
- Integrated river basin management
- An approach that manages an entire river basin, from mountains to sea, by considering flood control, water use, and the environment together
- Ecosystem services
- Benefits people receive from natural ecosystems, such as clean water, food, and the mitigation of disasters
- Sediment replenishment
- Deliberately releasing sediment accumulated in a dam downstream to return sediment to the river
ResearchResearch themes
The lab addresses the relationship between the natural environment and socioeconomic activities, aiming for a sustainable society in harmony with the environment through ecosystem-based disaster risk reduction and restoration of nature along rivers. It also aims to systematize river basin management policy and planning as an academic discipline.
*Illustrative imageRiver basin management balancing flood control, water use, and the environment
The lab analyzes how changes in the natural and social environment affect water resource systems. It studies integrated river basin management methods to manage disaster risk and to keep benefiting sustainably from the ecosystem services of waterside areas.
*Illustrative imagePreparing for floods and droughts at a dam in the Philippines
To prepare for heavy rain from super typhoons and extreme drought, the lab combines long-term rainfall forecasts with climate projections to improve flood-mitigating operation of the Magat Dam in the Philippines. It is also building mechanisms to share the results with local communities.
*Illustrative imageReturning dam sediment downstream to restore rivers
Sediment accumulates in dams, while downstream, sediment has decreased and rivers and coasts are deteriorating. The lab studies how to restore sediment movement in Japanese rivers by combining sediment replenishment, in which sediment from dams is released downstream, with channel widening.
MembersFaculty
- ProfessorKentaro Taki
- ProfessorKANTOUSH Sameh Ahmed
- Associate ProfessorSohei Kobayashi
- Program-Specific Associate ProfessorAHMED Mohamed Saber Mohamed Sayed
- Project Assistant ProfessorMaho Iwaki
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: “Upper Marikina River Basin Protected Landscape dammed by Wawa Dam” Arius1998 / CC BY-SA 4.0 (cropped)
- River basin management balancing flood control, water use, and the environment: “Salmon River in the Wopowog Wildlife Management Area, East Hampton CT” John Phelan / CC BY 4.0 (cropped)
- Preparing for floods and droughts at a dam in the Philippines: “Angat Dam reservoir ) - Flickr” Albert Lozada from Bacolod City, Philippines / CC BY 2.0 (cropped)
- Returning dam sediment downstream to restore rivers: “Pfaffensprung sediment bypass tunnel is visible from above the dam and outlet (8607083)” U.S. Army USACE-POA by Carly Lynch, USACE – Alaska District / Public domain (cropped)
- Related lab (Radioactive Waste Management Lab (Institute for Integrated Radiation and Nuclear Science)): “Dry Storage of Spent Nuclear Fuel ( )” Nuclear Regulatory Commission from US / CC BY 2.0 (cropped)
- Related lab (Radioactivity Environmental Dynamics Engineering Lab (Institute for Integrated Radiation and Nuclear Science)): “Radioactive contamination monitor EKO-C” Łukasz Karolewski / CC BY-SA 4.0 (cropped)
- Related lab (Disaster Prevention Technology and Policy Lab): “Yellowstone flood event 2022 swollen Lamar River and Lamar Valley ( )” Yellowstone National Park / Public domain (cropped)
- Related lab (Disaster Prevention Hydraulic Engineering Lab): “Flood in River Bagmati” Gaurav Dhwaj Khadka / CC BY-SA 4.0 (cropped)
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