Group Members

Our lab advances global hydrology and terrestrial water dynamics by integrating physical modeling, remote sensing, and data-driven approaches.
We also place strong emphasis on mentoring students and early-career researchers, and on building an international, collaborative research environment.

Join Us: We are always looking for motivated Postdocs, PhD, and Master/Bachelor students. Please see the Join Us page for openings and how to apply.

Staff / Students

All research staff members belong to the Institute of Industrial Science (IIS), The University of Tokyo, while students belong to the Department of Civil Engineering and/or the Graduate Program on Environmental Sciences (GPES).

Contact: To email a lab member, please add “.u-tokyo.ac.jp” after the address shown as “mail” below
For general inquiries, please use the contact information on the Join Us page.

Dai Yamazaki : 山崎大

PI: Associate professor (Apr 2018-)
mail: yamadai [at] iis

Global hydrodynamics: modelling, remote sensing, data integration
Personal Webpage
Google Scholar

Taishi Yazawa : 矢澤大志

Assistant Professor (Oct 2022-)
mail: yazawa [at] iis

Water resources management; Citizen science; Water, sanitation and hygiene; Environmental education
Google Scholar
researchmap
Personal Webpage

Dhruv Sehgal : ध्रुव सहगल

Postdoc (Nov 2023-)
mail: dhruv [at] iis

Sediment transport and global modelling, River and sediment monitoring.
Google Scholar
Research Gate

Swarup Dangar : স্বরূপ ডাঙ্গর

Postdoc (Feb 2024-)
mail: swarupd [at] iis

Hydrological modelling, Human-water systems, Remote sensing, Climate change
Google Scholar
ResearchGate

Jiachao Chen : 陳家超

Postdoc (Oct 2025-)
mail: jcchen [at] iis

Global hydrology; Flood hazards; Clicate change; Hydrological modeling
ResearchGate

Megumi Watanabe : 渡辺恵

JSPS Postdoc (Apr 2019-)
mail: megumi.watanabe [at] obspm.fr

Climate change impacts on glacio-hydrology, precipitation analysis, hydro-topography data
Personal Webpage
Google Scholar
Currently visiting LERMA, Paris Observatory

Youjiang Shen : 沈友江

JSPS Postdoc (Oct 2025-)
mail: shen-youjiang280 [at] g.ecc

Global hydrological modeling; Dam operation + monitoring; Water-Energy Optimization
Research Gate
Google Scholar

Yuki Kita : 北祐樹

Part-time Postdoc (Jul 2021-)
mail: ykita [at] iis

Flood risk analysis, Atmosphere and Ocean Modelling, Climate Science
Research Gate
Google Scholar

Katsura Hikie : 日置江桂

Collab Researcher (Jul 2025-)
mail: hikie [at] iis

Flood forecasting, Flood impact of climate change
Visiting from WeartherNews

Xiaoyu Sun : 孙小雨

Ph.D student (Oct 2024-)
mail: sunxiaoyu [at] g.ecc

Climate change impact on hydrological cycle in basins
Research Gate

Yuanzhe Zhang : 张远哲

Ph.D student (Apr 2025-)
mail: nu-env-zhang [at] g.ecc

Hydrological Model Calibration, Remote Sensing, Machine Learning

Leatile Modie :

Ph.D student (Oct 2024-)
mail: lemodie [at] iis

Analyzing climate change impact on river flow regime
Research Gate

Shun Mitamura : 味田村俊

Master (Apr 2023-)
mail: shun200119 [at] g.ecc

Currently visiting France

Shun Wakamatsu : 若松駿

Master (Apr 2024-)
mail: wakashun [at] g.ecc

Groundwater-surface water interactions

Genki Nakamura : 中村元気

Master (Apr 2024-)
mail: genkimrtry [at] g.ecc

Global-scale analysis of river ecosystem

Yukinori Kojima : 児島幸紀

Master (Apr 2024-)
mail: kojima-yukinori6911 [at] g.ecc

Data asimilation of multiple spaceborne observations to a global river model

Wasif Shahriar : ওয়াশিফ শাহরিয়ার

Master (Oct 2024-)
mail: wasifshahriar7 [at] g.ecc

Impact on urbanization on flood in continental-scale rivers

Nozomi Uemachi : 上町望実

Undergrad (Apr 2025-)
mail: uemachi-nozomi314 [at] g.ecc

Coupled hydro-sediment-morphodynamic model

Mairead Dalrymple Williams :

Undergrad (Oct 2025-)
mail: maireadwilliams09 [at] g.ecc

Monitoring human impact on river flow using satellites

Kaihao ZHENG : 郑楷颢

Visiting Master (Oct-Feb 2025)
mail: mostaly [at] pku.edu.cn

Global estimates of Flood management & flood regulation activity & adaptivity
Google Scholar
Research Gate
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Shengyu Kang : 康圣屿

Visiting Master (Nov 2025 -)
mail: kshy0204 [at] whu.edu.cn

High proformance computing, CaMa-Flood-GPU, Deep learning
Research Gate

Collaborators / Alumni

We collaborate with researchers across hydrology, Earth science, climate science, and geospatial communities.
This section lists key collaborators and alumni who have contributed to our research activities.

Kei Yoshimura : 芳村圭

(Apr 2018-) Global Hydrology Group

Professor @ IIS U-Tokyo
Yoshimura Lab WebPage

Yukiko Hirabayashi : 平林由希子

(Apr 2018-) Research Fellow

Professor @ Shibaura Institute of Technology
WebPage

Taikan Oki : 沖大幹

(Apr 2018-) Global Hydrology Group

Professor @ Dpt.Civil U-Tokyo
Oki Taikan WebPage

Colin Gleason :

(Oct-Dec 2024) Former Invited Professor

Associate Professor @ University of Massaschusetts Amherst
Fluvial hydrology; Fluvial geomorphology; Remote sensing
Ungauged basins; Arctic hydrology; Global water budget.
UMass WebPagess

Xudong Zhou : 周旭东

(Sep 2019 -) Former Assist. Prof

Research Professor @ Ningbo University
Water surface modelling; Human water management
Personal Webpage
Research Gate

Menaka Revel : මේනක රෙවෙල්

(Oct 2023-) Former PostDoc

Researcher @ University of Waterloo
Hydrological data assimilation; Altimetry data on global fresh water; Discharge estimation
Personal Webpage
Google Scholar
Research Gate

Gang Zhao : 赵刚

(Apr 2022-) Former PostDoc

Assistant Prof @ Institute of Science Tokyo
Flood hydrology; Hydrological modelling; Machine learning
Research Gate

Yang Hu : 胡阳

(Oct 2024 -) Former PostDoc

Nighttime light data, remote sensing, flood risk
Research Gate

Dung Trung Vu : Vũ Trung Dũng

(Sep 2023-) Former PostDoc

Water Resources Modelling and Management, Remote Sensing, Optimization
Personal Webpage
Google Scholar

Kiyoharu KAJIYAMA : 青春梶山

(Apr 2025-) Former PostDoc

Water scarcity, Rainfall forecast, Flood frequency analysis
Google Scholar

Yuki Kimura : 木村雄貴

(Oct 2021-) Former Collab Researcher

Climate change impact on flood
Visiting from MS&AD InterRisk Consultant
Google Scholar

Yuki Ishikawa : 石川悠生

(Oct 2024-) Former PhD Student

Water Resources Modeling; Remote Sensing of Discharge; Data Assimilation; SWOT
Google Scholar

Prakat Modi : प्रकट मोदी

(Oct 2019-) Former PhD Student

Post-doc @ Shibaura Institute of Technology
Personal Webpage
Research Gate
Google Scholar

Shuping Li : 李庶平

(Sep 2020 -) Former PhD Student

Land surface modelling, Hillslope hydrology
Personal Webpage
Research Gate
Google Scholar

Hiroaki Ikeuchi : 池内寛明

(Apr 2018 -) Former PhD Student

River + tide/surge model coupling
WebPage

Jida Wang : 王继达

(Apr 2022 - Aug 2023) Former Visiting Scholar

Associate Professor @ Kansas State University. Hydrological remote sensing: lake dynamics, hydrosphere-cryosphere interaction, human impacts.
WebPage

Victor Pellet :

(Jul 2019 - Nov 2020) Former JSPS Fellow

Water cycle analysis, Hydrology, Earth Observation, Remote Sensing, Data driven approaches,
Research Gate
Google Scholar

Etienne Fluet-Chouinard :

(June 2022-Aug2023) Former JSPS Fellow

Wetland hydrology; Radar remote sensing
Google Scholar

Thanh Duc Dang : Đặng Đức Thanh

(Jul 2021-Aug2021) Former JSPS Fellow

Hydrological and Hydrodynamic Modelling; Remote Sensing
Google Scholar

Dirk Eilander :

(Mar 2019 - May 2019) Former Visitng PhD

Compound flood risk modelling
River network upscaling
WebPage

Former Students

Many of our former students have gone on to careers in academia, research institutes, industry, and public organizations, continuing to contribute to hydrology and Earth science communities.

Yuki Ishikawa : 石川悠生

PhD, 2025Sep