ICHARM
Activity
ReportFY2022For the 7th ICHARM Governing Board Meeting
On 6 September 2023

International Centre for Water Hazard and Risk Management
under the auspices of UNESCO (ICHARM),
Public Works Research Institute (PWRI), Japan

Contents
Abbreviation
1．Summary・・・・・・・

1

2．Special topics

・・・・・・・

3

2.1

Revision of the ICHARM Programme

2.2

Contribution to mainstreaming disaster risk reduction in science, technology, andeducation

2.3

Development of a simple, low-cost flood forecasting system for small and medium rivers

2.4 HyDEPP-SATREPS in the Philippines
2.5

Follow-up Seminar for the graduate of the ICHARM master’s program

3．Research・・・・・・・

3.1

Data collection, storage, sharing, and statistics on water-related disasters

3.2

Risk assessment on water-related disasters

13

3.3 Monitoring and prediction of changes in water-related disaster risk
3.4 Proposal, evaluation, and application of policy ideas for water-related risk reduction
3.5 Support in improving the applicability of water-related disaster management
3.6

ICHARM joins MEXT-Program for The Advanced Studies of Climate Change Prediction

3.7

Field Surveys

3.8

Research Meeting

4．Training
4.1

・・・・・・・

30

Master’s program: Water-related Risk Management Course of Disaster Management
Policy Program (JICA Knowledge Co-Creation Program “Flood Disaster Risk
Reduction”)

4.2

Doctoral program: Disaster Management Program

4.3

Follow-up seminar for ICHARM alumni

4.4Internship5．Information networking
5.1 International conferences
5.2 International Flood Initiative (IFI)
5.3 UNESCAP/WMO Typhoon Committee (TC)・・・・・・・

33

5.4 International contribution in hydrology
5.5 Other international networking activities
5.6 Other domestic networking activities
5.7 Memorandum of Understanding
5.8 Visitors
6．Public relations

・・・・・・・

44

・・・・・・・

48

・・・・・・・

50

ANNEX 1

Number of Alumni of ICHARM training program ・・・・・・

54

ANNEX 2

List of Visitors to ICHARM

・・・・・・・

55

ANNEX 3

List of ICHARM Newsletter articles

・・・・・・・

56

ANNEX 4

Major updates on ICHARM web site・・・・・・・

64

ANNEX 5ICHARM Publication List (April 2022～March 2023)・・・・

6.1 Newsletter
6.2 Website
6.3 Brochure
6.4 Open Day
6.5 R&D Seminar
6.6 Flood Workshops for junior high and high school students
6.7 Public symposium
6.8 Visit by high school students
6.9 Publication
7．Awards

7.1 Awards
7.2 ICHARM Best Paper Award
8．Management
8.1 ICHARM Governing Board
8.2 Organization<ANNEX>

65

Abbreviation
ADB

Asian Development BankADBI

Asian Development Bank Institute

AOGEO

Asia-Oceania Group on Earth Observations

AOP

Annual Operating Plan

APWF

Asia-Pacific Water Forum

APWS

Asia-Pacific Water Summit

Area-BCM

Area- Business Continuity Management

AWCI

Asian Water Cycle Initiative

CLVDAS

Couple Land and Vegetation Data Assimilation System

COVID-19

COVID-19

d4PDF

database for Policy Decision making for Future climate change

DHM

Distributed Hydrological Model

DIAS

Data Integration and Analysis System

DOST

Department of Science and Technology, Republic of the Philippines

DPWH

Department of Public Works and Highways, Republic of the Philippines

DRR

Disaster Risk Reduction

GRIPS

National Graduate Institute for Policy Studies

GSMaP

Global Satellite Mapping of Precipitation

GUI

Graphical User Interface

GWP

Global Water Partnership

HCP

Hydrological Coordination Panel

HELP

High-level Experts and Leaders Panel on Water and Disasters

HyDEPPa Hybrid Water-Related Disaster Risk Assessment Technology for
Sustainable Local Economic Development Policy under Climate Change in
the Republic of the Philippines

HydroSOS

Global Hydrological Status and Outlook System

IAHS

International Association of Hydrological Sciences

ICFM

International Conference on Flood Management

ICHARM

International Centre for Water Hazard and Risk Management under the
auspices of UNESCOIDRISICHARM Disaster Risk Information System

IFI

International Flood Initiative

IFM

Integrated Flood Management

IRDR

Integrated Research on Disaster Risk

ISC

International Science Council

IWRM

Integrated Water Resources Management

JAXA

Japan Aerospace Exploration Agency

JCC

Joint Coordinating Committee

JFRM

Journal of Flood Risk Management

JHoP

Japan Hub of Disaster Resilience Partners

JICA

Japan International Cooperation Agency

JMA

Japan Meteorological Agency

JST

Japan Science and Technology Agency

LETKF

Local Ensemble Transform Kalman Filter

LLDA

Laguna Lake Development Authority, Republic of the Philippines

LOC

Local Committee

MEXT

Ministry of Education, Culture, Sports, Science and Technology

MLIT

Ministry of Land, Infrastructure, Transport and Tourism

MMDA

Metropolitan Manila Development Authority

MOFA

Ministry of Foreign Affairs

MoU

Memorandum of Understanding

NIED

National Research Institute for Earth Sciences and Disaster Resilience

NILIM

National Institute for Land and Infrastructure Management

NoWNET

Northern Water Network

OCD

Office of Civil Defense, Republic of the Philippines

OSS-SR

Online Synthesis System for Sustainability and Resilience

PaaS

Platform as a Service

PAGASA

Philippine

Atmospheric,GeophysicalandAstronomical

Administration
PRISM

Public/Private R&D Investment Strategic Expansion Program

PTC

Panel on Tropical Cyclones

PWRI

Public Works Research Institute

Services

R&D Seminar

Research and Development Seminar

RRI

Rainfall-Runoff-Inundation

RSR model

Rainfall-Sediment-Runoff model

SAR

Synthetic Aperture Radar

SATREPS

ScienceandTechnology

ResearchPartnershipforSustainable

Development
SCE-UA

Shuffled Complex Evolution algorithm developed in University of Arizona

SDGs

Sustainable Development Goals

SIMRIW

Simulation Model for Rice-Weather Relationships

SWWW

Stockholm World Water Week

TC

Typhoon Committee

UN

United Nations

UNDRR

United Nations Office for Disaster Risk Reduction

UNESCAP

United Nations Economic and Social Commission for Asia and the Pacific

UNESCO

United Nations Educational, Scientific and Cultural Organization

UNESCO-IHP

UNESCO- Intergovernmental Hydrological Programme

UNSTSWD

United Nations Special Thematic Session on Water and Disasters

UPLB

University of the Philippines Los Banos

VFES

Virtual Flood Experience System

VM

Virtual MachineVR

Virtual Reality

WEB-DHM

Water and Energy Budget-based Distributed Hydrological Model

WEB-RRI

Water and Energy Balance-based Rainfall Runoff Inundation

WGH

Working Group on Hydrology

WGM

Working Group on Meteorology

WMO

World Meteorological Organization

WRF model

Weather Research and Forecasting model１．Summary
This Activity Report summarizes the main activities carried out by International Centre for Water
Hazard and Risk Management under the auspices of UNESCO (ICHARM) in FY2022 (April 2022 toMarch 2023), the 17th year of ICHARM.
FY2022 is the first year of the 5th Medium- and Long-Term Plan (2022-2027) of Public Works
Research Institute (PWRI), to which ICHARM belongs, and also UNESCO-IHP-IX (2022-2029). In
light of these plans, the ICHARM Programme, including its missions, long- and medium-term
programmes, and work plan, was revised and adopted at the 6th ICHARM Governing Board Meeting
held on June 21, 2022.
In FY2022, as the first year of the revised ICHARM Programme, we conducted various activities,
including research, capacity building, and information networking.
Regarding research, based on the revised ICHARM Programme, we conducted various studies inJapan and overseas using the end-to-end approach (from data acquisition to the clarification,
evaluation, and prediction of natural phenomena and to the assessment of their socioeconomic impact).
The research activities were funded with the operating grants from the Ministry of Land, Infrastructure,
Transport and Tourism (MLIT) and external funds from UNESCO, the World Bank, Kyoto University,
the Cabinet Office, Japan International Cooperation Agency (JICA), and other organizations.
Capacity building is centered around master's and doctoral programs as it was in FY2021. In
addition, we held the Follow-up Seminar at ICHARM with 17 graduates who were invited to the 9thInternational Conference on Flood Management (ICFM9).
As information networking activities, ICHARM hosted major international conferences and their
sessions and side events, such as the 4th Asia-Pacific Water Summit (APWS4), ICFM9, and the United
Nations (UN) 2023 Water Conference. Through these events, the concepts of promoting water cycle
consilience, fostering “facilitators” (catalytic individuals who can lead the way toward resolving
problems by providing professional advice on-site using a broad range of scientific and indigenous
knowledge), and taking an end-to-end approach, which ICHARM has been promoting, were proposedand disseminated around the world together with our research results and achievements. These
concepts were reported in the plenary session on the last day of the UN 2023 Water Conference.
ICHARM also made consistent contribution to UNESCO-IHP; Executive Director Koike chaired oneof the cross-cutting working themes of UNESCO-IHP-IX (2022-2029). We continued working on theestablishment of a "Platform on Water Resilience and Disasters" in various countries as a central
member of the International Flood Initiative (IFI) and demonstrated the presence of Japan and
ICHARM to the participating countries through the activities of the Typhoon Committee Working
Group of Hydrology.
The outcomes of these activities were widely publicized as soon as possible through our website
and quarterly newsletters (about 5,000 subscribers) to share useful information and knowledge withas many people as possible.
FY2022, in particular, saw several awards presented to ICHARM and its staff for their outstanding1

activities. We received the Excellence Award of the Good Digital Award 2022 from the Digital Agencyof Japan along with the University of Tokyo for the development of a water-level forecasting system
for small and medium rivers. Executive Director Koike received the "AGU Ambassador Award." Still,
two papers by ICHARM researchers were commended by the Japan Society of Civil Engineers.
Details of each activity are described on the following pages.

2

２．Special topics
2.1 Revision of the ICHARM Programme
As described in Section 1, the ICHARM
Programme was revised when PWRI formulated
the 5th Medium- and Long-Term Plan (20222027). It was then discussed and adopted at the 6th
ICHARM

Governing

Board

Meeting. The

following is a summary of the programme.
The ICHARM Programme consists of fourparts: "Mission," "Long-Term Programme (10years)," "Mid-Term Programme (6 years)," whichis aligned with PWRI’s Medium- to Long-Term
Plan, and "Work Plan (2 years)," which is more

Fig. 2-1 The structure of the ICHARM Programmedetailed descriptions of individual projects. The
following summarizes the Mission and the LongTerm Programme.

The Mission states "innovative research," "effective capacity building," and "efficient information
networking" as the three pillars of ICHARM's activities, and declares: "Based on these three pillars,
ICHARM will globally serve as a knowledge hub for best national and local practices and a policymaking advisor, keeping in mind respect for diversity and inclusion of all stakeholders.”
The Long-Term Programme aims to implement the plans of the five priority areas set in UNESCOIHP-IX (2022-2029), thereby achieving the Sustainable Development Goals 2030 (SDGs) and the
Sendai Framework for Disaster Risk Reduction 2015-2030. It also aims to contribute to promoting
Japan’s new flood management policy, “River Basin Disaster Resilience and Sustainability by All,”
which has been developed based on the 2020 report submitted by the River Subcommittee of the Council
for Social Infrastructure Development in Japan. The report recommends shifting to a new flood
management approach that encourages basin-wide efforts involving all stakeholders in the basin to
manage floods considering climate change impacts and social changes.
Of the three primary activity areas, research will be conducted by employing the end-to-end approach,which covers the entire research process from data acquisition to the clarification, evaluation, andprediction of natural phenomena to the evaluation of their socio-economic impacts. This approach cancontribute to strengthening the resilience of society to water disasters and integrating scientificknowledge for building a sustainable society.
In capacity building, in addition to the graduate education, ICHARM will put more effort into
fostering facilitators who can provide advice based on interdisciplinary scientific knowledge for local
practitioners engaged in initiatives to improve water-related disaster resilience and sustainability.
In information networking, we will update our action plans as needed by visualizing and mapping
issues regarding water-related disaster resilience and sustainability in terms of SDGs, the Sendai
3

Framework for Disaster Risk Reduction, UNESCO-IHP-IX, and Japan’s flood management
improvement policies. Furthermore, taking advantage of the IFI framework, we will continue promoting
the implementation of our projects in societies and communities by combining research and capacity
building.
2.2 Contribution to mainstreaming disaster risk reduction in science, technology, and education
2.2.1 Recent status of water-related disaster risk reduction in international discussions on water issues
Water-related disasters are not explicitly included in Goal 6 “Ensure availability and sustainable
management of water and sanitation for all” of the Sustainable Development Goals (SDGs), adopted
by UN in 2015, but are mentioned in Target 5 “Significantly reduce the number of deaths and thenumber of people affected by disasters” of Goal 11 “Make cities and human settlements inclusive,
safe, resilient and sustainable.” There was an argument that water disasters should be included in Goal
6 and that water issues should be addressed in an integrated manner, but the claim was not supported
as argued.
A reference to water-related disasters was also debated at the Budapest Water Summit in November
2016 in the summit’s declaration drafting committee. Some opposed mentioning water-related
disasters in the declaration, arguing that 1.8 million children continued dying annually due to lack ofclean water and that the situation defied comparison with water-related disasters and consequently
denying referring to water-related disasters in the declaration. After much discussion, the committee
agreed to include the phrase "water-related disasters intensified by climate change" in the draft textof the declaration, but this important phrase was deleted from the final version compiled by theorganizers.
Around the time when such discussions were taking place in international forums, Japan
experienced catastrophic disasters: the Kanto Tohoku heavy rains in 2015, which caused the
Kinugawa River to burst its banks, and the Hokkaido Tohoku heavy rains in 2016, which caused
extensive damage to rural areas. The significant damage prompted the country to introduce a newdisaster management policy aimed at “rebuilding a risk-conscious and well-prepared society against
water-related disasters.” Even since then, water-related disasters have become more frequent andintense worldwide as the climate changes. Preparation for such disasters should be recognized as anurgent issue to be addressed globally, and disaster risk reduction must be mainstreamed throughout
the world. The four international conferences held during FY2022 were excellent opportunities toaccelerate the mainstreaming process.
2.2.2 Fourth Asia-Pacific Water Summit (APWS4)
APWS has been held to promote a comprehensive understanding of and find practical solutions towater issues by demonstrating high-level leadership over various sectors and mobilizing adequate
resources. The first summit took place in Beppu, Japan, in 2007, subsequently held in Chiang Mai,
Thailand, in 2013 and Yangon, Myanmar, in 2017. The fourth meeting was held in Kumamoto City,
4

Japan, on April 23-24, 2022.
The Kumamoto Summit was opened by His Majesty the Emperor of Japan, who gave a speechentitled "Hearts, Minds and Water: Touching Water in People's Beliefs." Prime Minister Kishidaannounced the Kumamoto Water Initiative to promote efforts to accelerate climate change adaptationand mitigation and improve basic living conditions. The summit concluded with the unanimous
adoption of the Kumamoto Declaration, which encourages commitment to transforming into a highquality society that is resilient, sustainable, and inclusive.
At the summit, ICHARM planned, organized, and coordinated a parallel session, "Water andDisaster/Climate Change," a special session, "Showcase," and an integration session, "Science andTechnology." In addition, ICHARM drafted the three key proposals, i.e., “promoting water-cycle
consilience,” “fostering facilitators,” and “taking an end-to-end approach,” in response to the leaders’question on the role of science and technology in cross-sectoral decision-making, and contributed totheir inclusion in the Chair’s Summary.
2.2.3 Ninth International Conference on Flood Management (ICFM9)
ICFM is a unique international conference proposed by the hydraulics community to discuss floodsin Europe, where severe floods are not frequent, in a multidisciplinary manner, including not only
academic but also practical and social aspects. ICHARM was asked by Professor Slobodan Simonovic,
the chair of the ICFM Ad Hoc Committee, to host an ICFM in Japan. We accepted his request andmade an official announcement at an ICFM webinar in August 2021 to hold ICFM9 as an in-person
conference in February 2023, one month before the UN 2023 Water Conference, in Tsukuba, Japan,
under the overarching theme “River Basin Disaster Resilience and Sustainability by All: Integrated
Flood Management in the Post COVID-19 Era.” The decision was welcomed by the webinar
participants in Japan and overseas.
A total of 394 flood experts from 41 countries and regions (212 from Japan, 100 from Asia, 78 fromother parts of the world, and 4 unknown) participated in the conference held from February 18 to 22,
2023. The number of participants was almost double the expected number, even though the COVID19 pandemic had not completely ended; all events, including high-level symposiums, expert meetings,
public events, and field tours, were attended by many in-person participants. Through these events,
the participants shared the latest scientific findings on the increasing frequency and severity of floods
and experiences accumulated in various regions, as well as identified scientific and social issues
through exchanges of questions and answers. The results are scheduled to be published online in theProceedings of the International Association of Hydrological Sciences (PIAHS) and in a special issueof the Journal of Flood Risk Management Science (JFRM) in late 2023 and April 2024, respectively.
The ICFM9 statement was also issued. Advocating the mainstreaming of flood risk management,
the statement calls for all stakeholders to take bold, transformative action while recognizing resilienceto flood disasters as a prerequisite for achieving sustainable development based on a holistic,
quantitative understanding of the impact of floods on human and economic factors, including its
5changes, and the impact of the COVID-19 pandemic. To achieve this goal, the statement also
positively proposes adopting the end-to-end approach to cross-sectionally link the latest science withon-site decision-making and action, strengthening the collection, archiving, and sharing of data andinformation, improving models to analyze increasingly severe floods and their economic impact,
promoting knowledge integration, fostering facilitators, and coordinating flood control measures inconsideration of social inequalities and the fundamental rights of indigenous people.
2.2.4 Sixth UN Special Thematic Session on Water and Disasters (STSWD6) and UN 2023 Water
Conference
While preparations for the UN 2023 Water Conference were underway based on the outcomes of
APWS4, ICFM9 and STSWD6 were held one month and one day, respectively, before the conference.
These meetings were very effective in building the international consensus on establishing theframework for water-related disaster management based on the key concepts presented at APWS4.
At STSWD6, His Majesty the Emperor of Japan, through his keynote lecture, introduced Japan'ssocial development through the water cycle to the world, using Edo as an example. ICHARM hosted
a showcase at the Science and Technology Session to highlight the importance of integrated scientificknowledge and human resource development to the international community, inviting one panelist
each from Honduras in Central America, Malawi in Africa, and Kumamoto City in Asia, as well as ayoung expert in water issues. Special Envoy of the Prime Minister of Japan KAMIKAWA, who cochaired the UN Water Conference's interactive dialogue on "Water for Climate, Resilience, andEnvironment," concluded her speech by saying, "Open science policies, facilitation between scienceand decision makers, the end-to-end approach, and integration of the water cycle are the keys tobreakthroughs." ICHARM’s contribution to mainstreaming water-related disaster management in thediscussions on water issues at the United Nations is evidenced by the outcomes of APWS4, ICFM9,and STSWD6, as well as by how they helped to build the international consensus on the matter.
2.2.5 ICHARM’s achievements from the series of conferences
Hosting ICFM9 provided ICHARM with an excellent opportunity to collect and sort out the latest
wide-ranging scientific knowledge in Japan and abroad through the planning and operational
processes. It also made us reflect on the direction and role that ICHARM should strive for. We werealso able to strengthen ties with graduates from our master’s and doctoral programs, thereby
enhancing our capacity to carry out international collaborative projects. In addition, through the
involvement in showcases and the compilation of outcome documents at APWS4 and STSWD6, wewere able to step up our capabilities of conducting our three principal activities: research anddevelopment, capacity building, and international networking.
Among those positive outcomes, particularly educational, was the meeting with Mr. Csaba Kőrösi,
the president of the UN General Assembly. When we asked him to meet with our doctoral and master's
students during his visit to Japan to attend the ICFM9 High-Level Symposium, he kindly accepted6our request. The students asked various questions, including those about the UN's efforts in flood
forecasting and warning systems, effective resource allocation to cope with climate change-related
disasters, and water resources management in international rivers. President Kőrösi gave detailed andinsightful answers to these questions, which made the meeting an extremely valuable and meaningful
human resource development opportunity.
As part of our contribution to the UN 2023 Water Conference, ICHARM proposed, among theconference’s water action agenda, the promotion of the Water Cycle Integrator (WCI), which consistsof three elements: promoting water cycle consilience, fostering “facilitators,” and taking an end-toend approach. To our great honor, our idea of WCI was quoted directly in the conference summarycompiled by the president of the UN General Assembly.
Through the above international activities aimed at promoting the mainstreaming of water-related
disaster management, ICHARM has achieved fruitful results in the areas of research, education, andinternational cooperation.
2.3 Development of a simple, low-cost flood forecasting system for small and medium rivers
In Japan, severe floods have occurred frequently in recent years, and many people have become
victims due to delays in evacuating when small and medium-sized rivers flood. One reason for this is alack of important information, particularly water level forecasts. Water level forecasts are essential formaking critical decisions, such as whether or not to issue an evacuation order. However, of theapproximately 21,000 rivers across the country, water level forecasts are issued for only about 400 rivers,
most of which are large rivers. For approximately 1,500 small and medium-sized rivers nationwide,
water level forecasting has yet to be conducted, although large populations reside in high-flood-riskareas along them. Therefore, MLIT has started promoting the installation of “crisis-management-typewater level gauges.” Gauges of this type are designed to be smaller and use less expensive
communication devices. In small and medium river basins, the flood arrival time from the onset of heavy
rainfall is often short. To ensure safe evacuation, it is important to predict water levels as far in advanceas possible and provide them to support municipal offices and residents in making decisions and starting
actions as early as possible. Therefore, this project aims to develop a water level forecasting systemcapable of predicting when the water level will reach the high water level at least two hours in advance.
The system is also designed to be low-cost, simple, accurate, time-efficient in computation, and easily
installed in small and medium-sized rivers.
The main results are as follows:

Selected the RRI model 1 as the runoff analysis model for its low cost, simplicity, and high

The RRI model is a distributed model designed to conduct basin-scale computation of the process from channel flow toflooding, taking into account surface runoff and intermediate runoff with rainfall as the input. The RRI model uses meshelevation data to represent surface topography and analyzes rainfall runoff as a plane two-dimensional flow. Therefore,
rainfall-runoff characteristics can be expressed mesh by mesh, and the influence of the spatiotemporal distribution of rainfall
can also be taken into account.

1

7

Fig. 2-2 Outline of flood forecasting system for small and medium rivers

reproducibility.


Developed the method to select and use a highly
flexible particle filter 2 for the RRI model, for the filter
is applicable to state quantities and parameters, suchas the flow rate. This method with a particle filter
continuously calibrates the water-level forecastingmodel using real-time water-level observation data,
thereby capable of improving forecasting accuracy.

Improved RRI-GUI 3 , a base model construction
support unit, and developed the method to apply to the
RRI model the SCE-UA method 4 , an automaticparameter adjustment function, in order to reduce theworkload required for model construction.

Constructed a prototype of a real-time automaticFig. 2-3 A map of 200 rivers acrossJapan, for which river models havebeen constructed.

2 Particle filters are used for state-space models with non-linearity or non-Gaussianity to sequentially assimilate numericalsimulation models and observed data. Compared to the Kalman filter and the ensemble Kalman filter, particle filters can beapplied to a wider range of state-space models, but the number of particles required to properly approximate the probability
distribution increases dramatically with the increase in the number of dimensions of the state space.
3 The GUI for model building (RRI_BUILDER) is equipped with the Japan Flow Direction Map and the detailed land-use
mesh data as national-land numerical data and thus automatically creates topographical and land-use data for the basin locatedupstream of the site selected by the user. GUI is capable of generating rainfall data for the RRI model from rainfall products ofanalytical rainfall (regular and preliminary), short-time rainfall forecasts (regular and preliminary), high-resolution
precipitation nowcasts, and ground rainfall. The GUI for displaying the calculation results (RRI_VIEWER) allows the user toview the calculated channel flow and channel water depth, slope flow, and slope water depth in time and space.
4 The SCE-UA method is an optimization method that combines the concepts of competitive evolution and population mixing,
which are similar to those employed for genetic algorithms. The method divides multiple candidate parameter sites into groups
and updates itself to find the optimal parameters within each group. It then re-divides the candidate parameter sites into newgroups using the revised version of the method and updates itself to find the optimal parameters within the new groups. The
SCE-UA method repeats this process.

8

information delivery system using Data Integration Analysis System (DIAS). The system isdesigned to analyze data and visualize and disseminate the results. We also tested the system for
information delivery.
Constructed river models for roughly 200 selected rivers to understand and reflect thecharacteristics of small and medium-sized rivers in analyses and then incorporated them in thereal-time automatic information delivery system. All the models were tested for forecasting
accuracy using past flood data from 291 events in total. The results showed that the models werecapable of accurately predicting when the water level would reach the flood risk level in 159
events (55%) with a lead time of more than 2 hours. For 60 of the remaining 132 events, themodels performed successfully when the prediction margin was set within a range of ±50 cm.
For the remaining 72 flood events, which occurred in small rivers, where floodwaters flow down
in a shorter time, the models were tested to see if they could predict when the water level would
reach the flood risk level, i.e., the lead time to possible flooding, within a prediction margin of±50 cm. The results showed that the models could make required predictions for 39 events. Of
the remaining 33 events, the project team has been testing possible solutions for 13 events.



Created a manual for constructing flood forecasting models for small and medium-sized rivers
by compiling the model construction procedures that ICHARM developed to reduce theworkload of river managers in this process. During the model construction and verification forabout 200 small and medium-sized rivers, we checked their standard data and solved issues
arising when setting river channels and model parameters. We accumulated, analyzed, andstructured the knowledge gained through these experiences and consequently succeeded ineliminating bottlenecks in the model construction, thereby enabling many engineers to develop
systems required for their purposes. We also added the flow chart, sample cases, glossary, and
FAQ regarding model construction.



Developed a database of basin area, land use percentage, and post-calibration parameters foreach of the 200 rivers for which a model was constructed. We also developed a method to extract
parameters for rivers with no flood data by using this database and applying principal component
analysis.

This project was conducted in collaboration with the Cabinet Office-led Public/Private R&D
Investment Strategic Expansion Program (PRISM).
2.4 HyDEPP-SATREPS in the Philippines
ICHARM represents the Japanese side of the joint research project under the “Science andTechnology Research Partnership for Sustainable Development: SATREPS” program supported by
Japan Science and Technology Agency (JST) and JICA. The joint research project is named “a Hybrid
Water-Related Disaster Risk Assessment Technology for Sustainable Local Economic Development
Policy under Climate Change in the Republic of the Philippines: HyDEPP-SATREPS.” SeniorResearcher OHARA has been serving as the project leader on the Japanese side, and ICHARM, as the9principal implementing agency, has been leading various activities with joint research institutes in Japanand the Philippines.
The joint research institutes in Japan are the University of Tokyo, Tohoku University, University of
Shiga Prefecture, Nagoya University, and Kyoto University. The representative research institute on thePhilippine side is the University of the Philippines Los Banos, the joint research institutes are theUniversity of the Philippines Diliman and Mindanao, and the collaborative institutions are theDepartment of Science and Technology (DOST), the Department of Public Works and Highways(DPWH), the Metropolitan Manila Development Authority (MMDA), and the Laguna Lake
Development Authority (LLDA).
The research activities in Japan supported by JST started in Japan on April 1, 2020, On the other hand,
the research activities in the Philippines supported by JICA were postponed due to COVID-19. The
activities finally started on June 3, 2021.
In FY2022, two Joint Coordinating Committee (JCC) were held attended by the joint research
institutes, the collaborative administrative institutions, JICA, and JST. The second JCC was held on June
10 as an online meeting. The third JCC was held on November 16, 2022, in Quezon City, which locatesin Metro Manila as a hybrid meeting. The third JCC was held as the first in-person meeting since theproject started, as overseas travel restrictions placed due to the global spread of COVID-19 were finallylifted.
From July 28 to August 25, 2022, ICHARM conducted an e-learning training course for the staff ofthe joint research institutions and the collaborative institutions to learn about water-related disaster risk
assessment technologies. Of the 93 registered participants, 63 completed Course 1 (Basic course on
water-related disaster risk), 41 completed Course 2 (Hands-on training on inundation analysis, hazard
and risk mapping), and 53 completed Course 3 (Advanced course on hydro-agriculture-economic
models). Forty people completed all three courses. As far as the staff of the collaborative administrative
institutes goes, 44 completed Course 1, 34 Course 2, 38 Course 3, and 33 all three courses. Large
numbers of successful collaborative administrative institute staff can make a drastic acceleration forward
the implementation of new technologies and policies.
On February 20, 2023, during the second training course while Filipino project members were vising
Japan, the HyDEPP-SATREPS Special Session was convened as one of the ICFM9 special sessions. In
the special session, UPLB professors, Fernando Chinte Sanchez, Jr. and Patricia Ann Asico JaranillaSanchez, who is also the project manager on the Philippine side, made presentations on their research
results, which was followed by the exchange of views and ideas with other participants. Attended by 50
people, 35 in person and 15 online, the session was a good opportunity for the project to gain wider
publicity.
On March 10, 2023, ICHARM participated in the World Disaster Risk Reduction Forum at Sendai,
Japan. In the session highlighting transdisciplinary approaches toward innovative recovery and disasterrisk reduction, ICHARM delivered a presentation entitled “Collaborative Approach of DRR in thePhilippines: HyDEPP-SATREPS Project,” explaining the joint project between Japan and the10Philippines as a good example employing a transdisciplinary approach.
The project will be carried until June 2026 in close collaboration between the two countries.

Photo 2-1 The 3rd JCC hybrid meeting in Manila, the Philippines

2.5 Follow-up Seminar for the graduate of the ICHARM master’s program
ICHARM was established in March 2006. One and a half years later, the Disaster Management Policy
Program (master’s program) was launched in October 2007, followed by the Disaster Management
Doctoral Program in October 2010. As of March 2023, 170 students completed the master’s program,and 15 received a doctoral degree. On February 22, 2023, ICHARM held the Follow-up Seminar at
ICHARM to help graduates brush up their skills and knowledge and to gain feedback to improve ourprograms. Seventeen graduates who were visiting Japan to attend ICFM9 participated in the seminaralong with faculty members, current students, and other invited guests.
The morning part began with opening remarks by Ms. MUTSUYOSHI, the director general of JICA
Tsukuba and Emeritus Professor TAKEUCHI of Yamanashi University, who was the founding Executive
Director of ICHARM. Then, Executive Director KOIKE delivered the keynote address sharing fiveguiding principles that he keeps in mind as a scientist; he encouraged young scientists to keep scientificcuriosity, respect diversity, cherish a reciprocal relationship with fellow scientists, work together, andbe humble by always reflecting on one’s actions. Relating to these principles, he conveyed valuable
messages to the graduates, as well as to current students and researchers, who are actively playing aleading role as scientists or practitioners in addressing water-related issues.
The next session was set to listen to voices from the graduates. Comments were collected from theparticipants beforehand, and four selected alumni, Mr. Akshay Kowlesser from Mauritius, Mr. Rafael
Silva Araujo from Brazil, Mr. Muhammad Masood from Bangladesh, and Mr. Roshan Kumara
Jayasinghe from Sri Lanka, spoke about their work experiences, challenges they faced, and how theysolved them using the knowledge gained at ICHARM.
The third session featured an interaction between former and current students. An enthusiastic
discussion took place in response to questions raised by current students, which were mainly related tothe experiences the graduates had in practicing what they had learned at ICHARM in their countries ororganizations. Mr. Asif Naseer from Pakistan, Mr. Ravindra Vitthal Kale from India, Mr. Robin Kumar
Biswas from Bangladesh, and Mr. Seenipellage Chaminda Sugeeshwara from Sri Lanka shared their11valuable ideas, suggestions, and experiences to help current students with future careers and studies at
ICHARM.
In the afternoon, Emeritus Professor Takeuchi delivered a special lecture based on his recentlypublished book, “Integrated Flood Risk Management: Basic Concepts and the Japanese Experiences.”
The Follow-up Seminar was another excellent opportunity for the participants to gain valuable
insights and advice and expand a professional network among themselves through extensive discussions
on various issues.

Photo 2-2 Discussion during the Follow-up Seminar

Photo 2-3 Participants in the Follow-up Seminar

12

３．Research
ICHARM will conduct “R&D Program 1: Development of technologies to promote basin-wide flood
control against severe water-related disasters" under “R&D Theme 1: Contribution to national landdevelopment to protect lives and livelihoods from natural disasters" in PWRI's 5th Medium- and Longterm Plan (2022-2027).
Specifically, we will conduct research focusing on the following four areas in order to addressincreasingly severe water-related disasters in consideration of climate change impacts by developing
technologies to support basin-wide flood control and thereby contribute to national land development
for the purpose of protecting lives and livelihoods from natural disasters.
1. Predict water-related disaster hazards accurately.
・Develop and improve technology to predict future water-related disaster hazards.
2. Minimize as much flood risk as possible.
・Develop a method to accurately evaluate and implement projects by “River Basin Disaster
Resilience and Sustainability by All.”
3. Reduce exposure to water hazards.
・Develop an accurate flood inundation risk assessment method.
4. Strengthen society’s disaster preparedness and resilience
・Develop technology to help strengthen society’s disaster preparedness and resilience against
water disasters.
In addition, the ICHARM Programme, which was revised based on PWRI's 5th Medium- and Longterm Plan, stipulates the following policy for research activities:
ICHARM will step up innovative research by taking the “end-to-end” approach, which covers theentire research process from data collection to the analysis, assessment and prediction of natural
phenomena to their socio-economic impact assessment, thereby creating a scientific knowledge base,which helps increase communities’ water-related disaster resilience and sustainability. We willconduct more advanced research by collecting data on both water hazards and disaster risks, assessing
and predicting risks and their changes, including those related to socio-economy, and establishingmethods and applications to support policy studies and implementations. We will promoteinterdisciplinarity by collaborating with a broad range of areas, including water use, public health,climate science, urban planning, ecology, biodiversity, agriculture, energy, and infectious disease
control, as well as by considering new lifestyles and national land development.
In these contexts, ICHARM has been conducting research on the following five themes using the endto-end approach:131.

Data collection, storage, sharing, and statistics on water-related disasters

2.

Risk assessment on water-related disasters

3.

Monitoring and prediction of changes in water-related disaster risk

4.

Proposal, evaluation, and application of policy ideas for water-related risk reduction

5.

Support in improving the applicability of water-related disaster management

The following sections describe the main research activities and achievements.
3.1 Data collection, storage, sharing, and statistics on water-related disasters
3.1.1 Development of a system for the integrated management of water resources and disasters inpoorly gauged basinsa) Improving the reliability of rainfall data in poorly gauged basins
Near-real-time rainfall data with adequate resolutions are a prerequisite for effective water anddisaster management. However, in many river basins in the world, near-real-time rainfall data is
not available due to insufficient ground-based observation networks.
ICHARM is continuously collaborating with JAXA to maximize the near-real-time freelyavailable global satellite precipitation products (SPPs) for effective water resources managementin poorly gauged basins (Fig 3-1.) ICHARM is also investigating a method for effective bias
correction of SPPs incorporating ground-based observation data and for planning on optimal
ground-based observation networks.

Fig. 3-1 A system for the integrated management of water resources and disasters in poorly gauged basins14

3.1.2

Study on an RRI-estimated inundation area assessment method using satellite data

As part of the HyDEPP-SATREPS project (refer to 2.4), ICHARM has been conducting themonitoring of inundation status using the RRI model and satellite data in Candaba City, a flood-prone
area in the Pampanga River basin, one of the major rivers of Luzon Island, the Philippines.
In FY2022, we conducted a case study on flood damage in late September 2022 due to Typhoon
Karding, and compared the inundation area by RRI simulations and estimated inundation extents bysatellite SAR images. As shown in Figure 3-2, satellite SAR images can only be acquired every few
days to about 10 days, but the RRI model can perform simulations every moment according toprecipitation data. However, since the inundated area estimated from satellite SAR images and theinundated area estimated from the RRI model both change greatly depending on the threshold, we
examined how much influence this evaluation would have.
Estimated inundation area by satellite SAR image determines whether or not there is inundation at
the spatial resolution of 10m of the original SAR image. On the other hand, the spatial resolution of
the RRI model is several hundred meters, which is lower than that of satellite SAR images. Therefore,
when judging whether or not the grids of the RRI model are flooded, it is considered that the extent
to which grids judged to be flooded obtained from satellite SAR images are included is one of thejudgment criteria. In addition, since the parameter output from the RRI model is the inundation depth,
it is necessary to set the threshold of the inundation depth to determine that it is a flooded area. Using
these thresholds, we examined the inundation-extent matching accuracy by testing various
combinations of the two variables, as shown in Figure 3-3, with the horizontal axis indicating changes
in SAR-based inundation extent (the occupied area ratio of SAR-based inundation grids per RRI grid,
range: 0.0-0.9 at 0.1 increments) and the vertical axis indicating changes in RRI-based inundation
extent (the water depth at which a grid is considered inundated, range: 0.0-0.3 at 0.1 increments). For
each combination, the closer to 1, the higher the matching, but there is a wide range from 0.09 to 0.92,
and it can be recognized that the matching varies greatly depending on the threshold.
These results confirmed that it is essential to factor in the effect of threshold settings in comparing
RRI-based inundation and satellite-based inundation. Our next goal is to determine appropriate
thresholds to reproduce actual inundation extents accurately and prepare necessary definitions toevaluate simulation results, based on past flood events whose inundation extents are identifiable withground-observed data.

15

Fig. 3-2 Comparison between satellite-based and RRI-based inundation extent in Kandaba City, thePhilippines

Fig. 3-3 The matching rates of satellite-based and RRI-based inundation extent, calculated using the confusion
matrix (the horizontal axis: changes in SAR-based inundation extent, the vertical axis indicating changes in
RRI-based inundation extent)

3.1.3 The development of OSS-SR and the training of facilitators in the Philippinesa) Support runoff inundation analysis using global observation data
ICHARM has developed the “Online Synthesis System for Sustainability and Resilience (OSSSR)” for the Philippines, which provides the results of climate change impact assessment and risk
information primarily about real-time flood forecasts (Fig. 3-4.) However, the system has often
failed to monitor or forecast floods in real time because locally observed rainfall data areunavailable. To address this challenge, ICHARM started the development of a system capable of16

robust, practical flood forecasting using all data available in FY2022. This system is designed touse not only ground-observed rainfall but also statistically corrected the Global Satellite Mappingof Precipitation (GSMaP) data implemented by JAXA when observed data are missing, so that it
can incessantly provide flood forecasts. It can also display inundation information predicted usinghydrologic models and images from Sentinel-1 and Sentinel-2 satellites, allowing users to compare
and analyze inundation forecasts immediately. In the case of the flood due to Typhoon Noru, which
hit Luzon Island on September 25, 2022, and victimized 40 people, the system could continue
providing flood forecasts using statistically corrected GSMaP data even when ground-observed
rainfall remained inaccessible.

Fig. 3-4 The outline of OSS-SR-based real-time flood monitoring and forecastingb) Fostering facilitators
ICHARM has also been strengthening collaboration with local stakeholders to further promote
the practicality of OSS-SR and spread the information and use of the system through local
facilitators as effective global warming adaptation measures. In November 2022, ICHARM held
separate meetings in Davao City, the Philippines, with the Davao City Council, Philippine
Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), Office of Civil
Defence (OCD), and the University of Ateneo to share the latest developments of OSS-SR and to
discuss the action plan of local facilitators. We also had meetings in Metro Manila with Dr. Renato
17

U.

Solidum,

Department

Jr.,
of

the

undersecretary

ScienceandofTechnology(DOST), Dr. Vicente B. Malano, the director of
PAGASA, and staff of DPWH and explainedthat the development of OSS-SR and thetraining of facilitators had made good progresswithconcerted

supportfromvariousstakeholders in compliance with the frameworkof the platform of water resilience and disasters
in the Philippines. In addition, 11 local
facilitators visited Japan from Davao City on the

Photo 3-1 ICHARM staff (left) reporting to Dr.
Renato U. Solidum, Jr., the undersecretary ofDOST

occasion of ICFM9 in February 2023. They learned about flood resilience and benchmarked DIAS
for their own OSS-SR development and operation.
This project was conducted as an activity in the MEXT-Program for The Advanced Studies of
Climate Change Projection (SENTAN).
3.1.4 Drought monitoringa) Improvement of soil moisture observation resolution using global observation data
ICHARM developed “Coupled Land and Vegetation Data Assimilation System (CLVDAS)” forWest Africa and WEB-RRI for the Volta River basin located in its southern region. We obtained 25km grid soil moisture by assimilating microwave brightness temperatures using CLVDAS andconverted the 25-km data to higher resolution data using the spatial distribution of 2-km grid soil
moisture obtained using WEB-RRI.
b) Drought monitoring based on atmospheric analysis
In recent years, Panama has been experiencing severe drought impacts, such as the lowering of
the Panama Canal’s water level. In order to identify the cause of the drought, we tested droughtmonitoring based on atmospheric analysis. More specifically, we investigated the north-south
vertical cross-sections of vertical wind speed (Figure 3-51A and 2A) and specific humidity (Figure
3-51B and 2B) in the atmosphere using the DIAS vertical cross-section analysis tool. As shown inpanels 1A and 2A, focusing on the Northern Hemisphere, where the Panama Canal (81-79◦W) is
located, an updraft occurs in the tropical convergence zone, followed by dry air moving down to
the surface due to the Hadley circulation. In the case of a wet year (1B), thick moist air covers theground surface including the Panama Canal, blocking dry air hanging over the area from reaching
the ground, which prevents drought from occurring. On the other hand, in the case of a dry year(2B), no moist air covers the ground surface, consequently allowing dry air to descend to the groundand cause drought.
18

Hadley
circulation

PanamaUpdraft

1B

Hadleycirculation

PanamaUpdraft

1A

Moist air mass
-0.0008

20m/s-0.00120.0008

PanamaHadleycirculation0

Updraft

2B

Hadleycirculation

Panama2A

Updraft

20m/s

00.0012

Fig. 3-5 The north-south vertical cross-sections, created using the DIAS vertical cross-section analysis tool,
exhibiting the difference in vertical wind speed (A) and specific humidity in the atmospherebetween their 20-year average and the wet-year average (1A&B) and the drought year (2A&B)

c) Improvement of capacity for drought monitoring
Pakistan has installed drought monitoring systems based on drought indices and satellite data
to address increasingly severe droughts. In order to improve the performance of the systems,
ICHARM has been proposing solutions, including directions and strategies for investigations, toincrease the country’s drought management capacity under the World Bank project "Capacity
Building for Drought Monitoring and Planning in Pakistan."In FY2022, a questionnaire survey about Pakistan’s drought monitoring systems was conducted
for both drought information providers and recipients (organizations in agriculture, irrigation, anddrainage). The results found that the providers tend to evaluate the current drought management
framework highly, whereas the recipients do otherwise, revealing a clear gap between the two sides.
Based on these findings, ICHARM recommended that Pakistan's drought management agencies
should act as facilitators to improve the nation’s drought management framework by filling the gap
and supporting cross-sectoral cooperation at various levels through the end-to-end approach.
3.2 Risk assessment on water-related disasters
3.2.1 Development of an analysis model for sediment and driftwood laden floods
ICHARM has been developing a technology to simulate sediment and driftwood laden floods using
sediment hydraulic models. In FY2022, we worked on the development of a rainfall sediment-runoff
19

(RSR) model to assess the amount of sediment and driftwood discharged from a basin during a heavy
rainfall event. This model combines rainfall-runoff analysis with slope stability analysis, debris
tracking using equations for a system of particles, and sediment and driftwood runoff analysis usinga unit channel model to analyze water, sediment, and driftwood runoff at any point in a basin. The
model was applied to the 2017 Akatani River flood disaster to calculate the discharge of water,
sediment, and driftwood. Figure 3-6 shows the calculation results. Using these results, a planar twodimensional analysis was conducted for the flooded area, and the results are shown in Figure 3-7. The
analyses found that the flooded area can be more accurately calculated by considering sediment anddriftwood, indicating that these methods are useful for creating hazard maps and evacuation plans.

Fig. 3-6 The estimated discharges of water, sediment,
and driftwood in the 2017 Akatani River flood
Fig. 3-7 A comparison in the water depth the peakdischarge between water only (left) and water withsediment and driftwood (right)(The white dotted line indicates the flooded areainterpreted from aerial photos)

3.2.2

Development and application of hydrology and a crop coupled model

Distributed hydrological models (DHMs) capable of simulating water and energy budgets andrainfall-runoff-inundation processes are essential tools for integrated water resources management,
as well as water-related disaster risk reduction under a changing climate.
ICHARM has developed the Water and Energy Budget-based RRI (WEB-RRI) model toimprove the accuracy of low flow estimation, flood onset timing, peak flood discharge, andinundation characteristics under various climatic conditions and projection scenarios. The model
has been applied to several projects at ICHARM (e.g., flood forecasting and climate change impact
assessment in different parts of the world).
To expand the model applicability and simulate vegetation growth and crop yield, the WEBRRI model was coupled with the dynamic vegetation model and the Simulation Model for Rice20

Weather Relations (SIMRIW). The applicability of the coupled model is under verification in thePhilippines and Indonesia for generating useful socio-economic information to support andimplement three major global agendas (i.e., Sendai Framework for Disaster Risk Reduction, Paris
Agreement on climate change, and Sustainable Development Goals).
3.3 Monitoring and prediction of changes in water-related disaster risk
3.3.1 Improvement of an ensemble rainfall forecasting method
Rainfall prediction models currently in use have not been so successful in predicting linear
precipitation systems, which have caused large-scale water-related disasters in recent years. Therefore,
ICHARM has been developing to improve a method for reproducing rainfall distribution (creation of
initial values) using a weather forecasting model (Weather Research and Forecasting (WRF)) and
Local Ensemble Transform Kalman Filter (LETKF) which is one of data assimilation methods.
Specifically, we increased the number of ensemble members, which significantly affects theperformance of the ensemble Kalman filter, from 33 to 51. We also introduced a new method forhandling the ensemble spread. Conventionally, we increased the ensemble spread by 10% after each
set of calculations but changed this procedure by mixing the ensemble spreads before and after a setof calculations at a certain rate to keep the spread value at a certain level. We then experimentally
applied the new method to the case of the linear precipitation system over northern Kyushu in July
2022, as shown in Figure 3-8. The current method reproduced the precipitation system over the sea
north of Kyushu, while the new approach placed it approximately in the same area as observed by
Japan Meteorological Agency (JMA). The new method also improved the time series of precipitation.
JMA

Radar

Existing method：33member，Updated: 51memer, RTPS

Existing

UpdatedFig. 3-8 Comparison of reproduction results using existing and new methods
The upper panels show rainfall distribution at the onset of a linear precipitation system on July 19, 2022, observed by JMA(left) and reproduced using the existing method (center) and the new method (right).
The lower panels show temporal changes in rainfall in the red-boxed area indicated in the JMA-observed rainfall distribution
map; the blue line is observed rainfall, the black line ensemble analysis results, and the red line ensemble average.

21

3.4 Proposal, evaluation, and application of policy ideas for water-related risk reduction
3.4.1 Regional resilience enhancement through the establishment of Area-BCM for industry
complexes in Thailand
ICHARM is involved in the SATREPS program on “Regional resilience enhancement throughestablishment of Area-Business Continuity Management (Area-BCM) at industry complexes inThailand,” to assist the country in continuing substantial socio-economic development. To date, wehave completed an extreme flood scenario analysis by assuming rainfall events of longer return
periods based on two past rainfall patterns: the rainfall that caused the 2011 flood and the historicalmaximum rainfall. The analysis models of different resolutions were also created using a 1 km
resolution for the basin and a 40 m resolution for Rojana, Hi-Tech, and Bang Pa-In industrial
complexes. In the scenario analysis, we investigated the onset and retreat of a flood event, inundation
depth and duration, the effect and limitation of flood walls, and estimated inundation risks for businesssites, residential areas, commuting routes, and other possible subjects. The results revealed that if arainfall event of the historical maximum scale occurs over the basin every month, the inundation depth
at location A, where the maximum depth of flooding occurs, is likely to reach the top of the flood
retaining walls (Figure 3-9).

Fig. 3-9 Inundation depths at six locations when a rainfall event of the historical maximum scale occurs overthe basin every month

3.5 Support in improving the applicability of water-related disaster management
3.5.1 Real time water level forecasting system for small and medium rivers(Refer to 2.3)
3.5.2 Develop optimal operation methods for existing dams and other structures that contribute toflood control and support their implementation in target locationsa) Investigation on the optimization of dam operation based on inflow prediction
Simulations were conducted for the Oi Hatanagi 1 Dam for the study period of March 2020February 2021 by concurrently running both short-term inflow prediction (39 hours, 33 ensembles)
and long-term inflow prediction (3 months, 13 ensembles). The simulation results were used to22

investigate the optimization of dam operation for better flood control and more power generation.
Short-term prediction was used for flood control. Based on hourly inflow prediction, the top 8
ensemble inflows (equivalent to 25%) were used if the “water level” was higher than the operational
water level (Href) at the time of prediction or the top 24 ensemble inflows (equivalent to 75%) if
lower. The “Href” is the water level to determine which ensemble predicted inflows to use. After
reviewing the annual operation of the dam, this study set the Href at 910 m for January and February
and 935 m for March through December.
Long-term prediction was used to investigate more effective dam operations to generate more hydropower. This type of forecasting is effective for planning drought risk management and more power
generation due to a long lead time, but not very practical to predict the inflow timing and amountaccurately. Therefore, this study used the average inflow, which was acquired by dividing the total
inflow from the predicting start time to N days later by the number of days (i.e., N). We also useddifferent numbers of days to calculate the average inflow and calculated the average during the warm
season and the cold season separately. The analyses were conducted by selecting ensemble inflows
based on the Href at the time of prediction. The highest ensemble inflow (rank 1) was used if the“storage volume” was higher than the Href, or the lowest ensemble inflow (rank 13) if lower.
Since the short-term and long-term prediction ran concurrently, the larger dam water release volume
used for either type of prediction (the sum of water used for power generation and the dam water
release from the gates) was used as the dam water release volume for the next hour.
Figure 3-10 shows the simulation results. The results of the long-term prediction cases show thatcase 2 (orange dotted line; N=10 for the warm season and N=30 for the cold season) can achieve a
6.0% increase in power generation compared with the actual power generated during the study period.
The results suggest that our approach can offer practical information for more power generation andbetter flood control by running short-term and long-term forecasting simultaneously. Our next step

Precipitation

Full reservoir level
Safe water use level
Operational water level

Water Level (Observed)
Predicted Inflow (Case1)
Predicted Inflow (Case2)

Precipitation [mm/h]

Dam Water Level [m]would be to investigate for other times of the year and other dams.

Discharge for power generation (Case2)

Discharge [m3/s]

Total discharge (Case2)

Discharge for power generation (Obs.)
Total discharge (Obs.)

Fig. 3-10 The simulation results of the annual operation of the Oi Hatanagi 1 Dam for the period of March 2020
- February 2021

23b) Participation in a World Bank workshop and in Kerala, India
Kerala State is located in thewesternmost part of India. Its rivers
have similar characteristics to those ofJapan, which are mostly short and very
steep. The state experienced severe
floods in 2018 and 2019, and the state
government and the World Bank are
currently working together to plan

Photo 3-2

Attendees of workshop

effective flood control measures. Since
sharing similar topographical features with Kerala State, Japan is considered suitable for assisting thestate in planning flood control measures by providing practical knowledge. For this reason, the WorldBank organized a workshop on January 23-25 in Thiruvananthapuram City, Kerala State, India,
inviting experts from Japan. It was attended by the officials of the state government, the World Bank,and the Japan Water Agency, as well as a research team from ICHARM led by Executive Director
KOIKE. In the workshop, some participants asked many questions about data required for analysis,model reliability, integrated dam operation, and so on. And ICHARM team conducted a field survey
at the Moonzhiyar dam for power generation and the Maniyar barrage for irrigation on the Kakkad
River, a tributary of the Pamba River, to which Kerala State has recently paid a great deal of attention
in the context of flood control.
3.5.3 The possibility of VR-driven risk communication as a water-related disaster education tool
In order to reduce evacuation delays and local residents' encounters with danger during water
disasters, it is necessary to develop a risk communication method that shares the extraordinary dangerof water disasters with the government and local residents and leads them to appropriate evacuation
actions. On the other hand, in recent years, virtual reality technology (VR) has been developed toexperience a space created virtually by a computer.
ICHARM has been developing the Virtual Flood Experience System (VFES) for this purpose byintroducing VR technology, which enables people to have a virtual experience in a space created bycomputers. VFES is programmed to accurately reproduce hills, rivers, buildings, urban topography,
and other features, using 3D survey data, and overlay a flood image that is either reproduced or
simulated on top of the previously created geographic image. The system then allows people toexperience a virtual flood situation through an avatar, or a “virtual self” created in cyberspace. In thisway, VFES enables people to virtually experience flooding that may occur in their residential area
before it actually does. The system also allows people to put themselves in other people’s shoes. For
example, by setting the avatar to walk as slowly as the elderly, younger people can virtually experience
the difficulties the elderly are likely to face during flooding, including evacuation.
24

Taking advantage of ICFM9, held in February 19, 2023, ICHARM hosted “e-sport@KasenBousai,”an esport-like competition to promote VFES by inviting students from local junior high and highschools and a university in Tsukuba City. As part of the preparation for this event, a pre-learning
opportunity was provided for students to learn about possible flood situations and safe evacuation. At
each school, students were divided into two groups: when one group operated avatars on VFES, theother cheered on the operators while watching the progress on the display (Figure 3-11). Taking turns
in the operator position, they tried out a virtual evacuation drill in a simulated flood situation created
for a high flood-risk area in Tsukuba City (Photo 3-3). After learning how to operate VFES, thestudents gathered for the e-sport@ KasenBousai event on February 19, 2023, to learn about flooding
while having fun competing with each other. The purpose of the competition is to reach a designatedshelter as quickly as possible while gathering disaster-related information and choosing evacuationroutes along the way. The teams were also expected to earn as many points as possible that were given
to their choices of actions during the evacuation (Photo 3-4).
Because the event incorporated a game-like factor, the students seemed to be more motivated tojoin a learning opportunity using VFES and thus learned what to do in the event of a flood effectively
while having fun. The preparation at each school before the main event also helped increase thestudents’ understanding of the proper actions for safe evacuation. Overall, the e-sport@KasenBousai
event successfully demonstrated that VFES can be an excellent tool for educating people about flood
disasters.

Fig. 3-11 A simulated view of Kamigo District of Tsukuba City in the Kokai River basin. The view displayed on
the VFES operator’s monitor is shown to participants(The small green structure in the far background is the designated evacuation shelter, Kamigo Elementary School (the goalof the competition).

25

Photo 3-3, 3-4 Scenes from a pre-learning session and the e-sport@KasenBousai event

3.5.4 Support for improving the capacities of local governments to respond to floods
ICHARM has posted the “Collection of
Critical Situations during Flood Emergency
Response” on its website since June 2020,
aiming to help improve the emergency
response capacities of local governments for
more

effective

management

of

flood

disasters, which frequently occur across

Photo 3-5 Lecture for local government officials

Japan in recent years.
Defining critical situations in which local

government officers have a hard time making sensible decisions because they panic, don’t know what
to do, are confused or in dilemma, etc., during an emergency response effort, we collected typicalcritical situations from the review reports of past flood disasters and summarized as a booklet. Also
provided with the booklet is the “Appendix for local government response under COVID-19,” whichlists possible critical situations and necessary countermeasures during flood emergency response
under COVID-19.
In FY2022, training seminars and lectures were provided by senior researcher OHARA for local
government officials as follows:・June 1, 2022: "Key Points for Evacuation Information Issuance: When to Release What
Information” for municipal heads at an annual nation-wide seminar on disaster prevention andcrisis management, Fire and Disaster Management Agency

・July 14, 2022: "Possible Critical Cases You Should Know to Avoid Troubles in Response to
Flooding" as a training course for disaster response officials of Sayama City, Saitama
Prefecture・

October 18, 2022: "Key Points for Disaster Response Learned from Case Studies" as a training
course for disaster response officials of Saijo City, Ehime Prefecture26

・

December 27, 2022: "Key Points of Disaster Response Learned from Case Studies" as part of
the 5th Municipal Disaster Prevention Lecture Series for Municipal Officials, Fire andDisaster Prevention Science Center・

January 19, 2023: "Learning from Case Studies: Response to Water-related Disasters by
Municipalities that Prepared for Disasters," National Construction Training Center

3.5.5 Introduction of PaaS into IDRIS for its promotion of widespread use and a trial in collaboration
with Tsuruoka CityIn FY2022, to promote the widespread use of the ICHARM Disaster Risk Information System(IDRIS), ICHARM strived to reduce its installation and maintenance costs by the Platform as aService (PaaS) and tested a preliminary IDRIS management system with Tsuruoka City of Yamagata
Pref. in collaboration with a local technical college.
Up to FY2021, IDRIS was constructed on the Virtual Machine operating on a cloud system. The
Virtual Machine is equipped with a network, storage, operating system, and application layer, as well
as data. However, since IDRIS only requires an application layer and data, it can still work sufficiently
using the remaining elements from a cloud system. By taking advantage of this design, we modified
IDRIS by introducing PaaS for an application layer and data, thereby reducing its operation cost down
to a fifth of the initial cost.
PaaS-based IDRIS is more suitable fordissemination than the Virtual Machine type,because installing the latter type of IDRIS
requires a wide range of information andcommunication technology skills in networking,storage, operating system, and applications andthus requires competent staff and a substantial
cost. Local municipalities often have trouble
finding such experts and appropriating adequate
funds. In contrast, PaaS-based IDRIS hassignificantly simplified the installation process,Fig. 3-12 Comparison of two versions of IDRIS

merely requiring technical skills related toapplications. This led us to experimentally duplicate PaaS-based IDRIS on a cloud server and transmit
it to a technical college in Tsuruoka City. Our attempt was successful in implementing IDRIS without
any major problems, and the technical college is currently working on the customization of the content,suggesting a step forward to the widespread use of the system in local municipalities.

27

3.6 ICHARM joins MEXT-Program for The Advanced Studies of Climate Change Prediction
ICHARM has participated in MEXTProgram for The Advanced Studies of
Climate Change Prediction (SENTAN)
from FY2022 and has been conducting research on climate change in collaboration with Kyoto
University and other organizations. The program is built on the achievements of the Integrated Research
Program for Advancing Climate Models (2017-2021) and the Program for Risk Information on Climate
Change (2012-2016). Research projects aim to reduce the uncertainty in future predictions by improving
climate-change prediction simulation technologies, to increase the understanding of the climate changemechanism, and to advance the integrated research and development of systems for better quality andmore effective use of climate prediction data, thereby creating and providing scientific evidence
essential to plan adaptation measures and mitigation measures that help realize a decarbonized society.
ICHARM has been assigned to the task D “Evaluation of hazards and associated risks in the AsiaPacific regions and the promotion of international cooperation” led by Prof. TACHIKAWA Yasuto,
Kyoto University, of the research area No.4 “Development of integrated hazard prediction models.”
ICHARM begins to develop a water cycle model in the Philippines and OSS-SR tailored to their local
needs and conditions.
In FY2022, ICHARM has started a dynamic downscaling of the database for Policy Decision making
for Future climate change (d4PDF) to improve the reliability of flood risk assessment by obtaining data
for a sufficiently long period compared to the recurrence period even in dynamic downscaling. In
addition, using OSS-SR, ICHARM trained local facilitators, developed a robust and practical flood
prediction system using all kinds of data, and disseminated climate change impact assessment results
and real-time flood forecast information considering local needs.
3.7 Field Surveys
So many factors are involved in flood hazards. Rainfall and sediment runoff are among them, and
ICHARM has been conducting field surveys in the Abira River basin, Hokkaido, Japan, which features
a gently sloping volcanic topography, in order to establish a prediction method for rainfall and sediment
runoff. On the field, we investigate elementary processes that affect the sediment runoff phenomenon,
specifically looking into sediment sources, rainfall runoff, flood and sediment transport observation,
channel microtopography, and bed materials. We also work on tasks related to the verification of asediment runoff model (a mathematical model) built by combining element models.
Our sediment runoff model is designed to evaluate discharge, sediment volume, and sediment particle
size distribution during a flood at any point in a river channel of a basin. To test its generality andapplicability, we observe flood discharge and suspended load at a cross-section of the Abira Riverchannel. We also investigate the elementary process of sediment transport in the river channel. These
field surveys provide valuable data on artificial river channels that cannot be obtained from flume
experiments, including river bed fluctuations, classification of suspended load and bed materials, and28

the shape and grain size distribution of natural levees formed on a flood plain. Photos 3-6 and 3-7 show
a microtopography survey in an artificial channel section of the Abira River.

Photo 3-6 and 3-7 A survey in an artificial channel section of the Abira River (photos taken in October 2022)

3.8 Research Meeting
The Research Meeting has been held roughly once a month since March 2008 for researchers to
introduce each research topic in order to upgrade their research skills, learn different perspectives, andpractice interaction with other researchers.
In FY 2022, the meeting was held 23 times, and 26 people delivered a presentation in total.

29

４．Training
ICHARM conducts various education and training programs with the aim of not only improving
individual problem-solving skills, but also improving organizational disaster management capabilities.
We also continue providing support for students and trainees who return home after completing
programs by holding follow-up seminars, through which we also gain feedback to improve our programs.
The following reports the main training activities in FY2022. ANNEX 1 shows the number of trainees
by country.
4.1 Master’s program: Water-related Risk Management Course of Disaster Management Policy
Program (JICA Knowledge Co-Creation Program “Flood Disaster Risk Reduction”)
Since 2007, ICHARM has provided a one-year master’s program, “Water-related Risk Management
Course of Disaster Management Policy Program (JICA Knowledge Co-Creation Program “Flood
Disaster Risk Reduction”), as a joint effort with JICA and National Graduate Institute for Policy Studies(GRIPS). This program is targeted at officials of administrative organizations and designed for them toobtain a master’s degree within a single year. In the first half of the course, from October to March, theclasses consist mostly of lectures; in the second half, from April to the end, students work on researchand graduation theses. In addition, several study trips are conducted during the program for students tovisit dam, river, and other management offices around Japan, where they can learn firsthand knowledge
and experience in current flood management in Japan from experts of MLIT and other organizations.
Between 2007 and March 2023, 170 students from 36 countries graduated from the master’s program.
In September 2022, the 15th batch of 13 students from 8 countries (Bangladesh, Bhutan, Indonesia,
Malawi, Malaysia, Nepal, the Philippines, and Sri Lanka), who entered the program in October 2021,
graduated with a master’s degree. In the following month, the 16th batch of 13 students from 6 countries(Bhutan, Pakistan, the Philippines, Sri Lanka, East Timor, and Tunisia) enrolled in the program.

Photo 4-2 Master’s and doctoral students posedfor photos after the graduation ceremony at
GRIPS in September 2022

Photo 4-1 Students working on a flume experimentto verify hydraulic theories learned in class30

4.2 Doctoral program: Disaster Management Program
ICHARM started a doctoral
program, “Disaster Management
Program,” in 2010 in collaboration
with GRIPS to produce experts whoare capable of developing policiesonwater-related

managementanddisasterrisktakingtheleadership in implementing them.
By March 2023, 15 students fromseven countries graduated from thisPhoto 4-3 Participants in the hybrid entrance ceremony for the 12
batch of doctoral students in October 2022

program.
In September 2022, the 12th batch of four students enrolled in the program. As of March 2023, a totalof 9 students are in the program; two in the third year, three in the second year, and four in the first year.
Disaster risk reduction has been one of the most debated water issues worldwide and demands closer
collaboration between policymaking and science. In response to this need, JICA has started a newscholarship program for foreign students named “Disaster Risk Reduction Leaders Capacity
Development for the Sendai Framework Implementation.” ICHARM and GRIPS also cooperate in
implementing this program by providing doctoral education to the scholarship recipients. As of March
2023, six out of the nine doctoral students are using this scheme; one in the third year, two in the second
year, and three in the first year.
4.3 Follow-up Seminar for ICHARM alumni
ICHARM has held the Follow-up Seminar once a year since 2007 in a country of graduates fromICHARM educational and training programs to provide additional assistance and visit rivers and otherplaces with water-related problems. This annual meeting is a great opportunity for ICHARM to see how
graduates are using the knowledge and skills they learned at ICHARM and to share issues they face intheir practices. Such information is used to improve ICHARM’s training programs and research
activities.
Since ICHARM hosted ICFM9 in Tsukuba in February 2023, the Follow-up Seminar for FY2022 washeld at ICHARM in February 22, 2023, for the following purposes:
1.

Strengthen the network between ICHARM staff and graduates, as well as among graduatesthemselves;

2.

Share the current status and issues related to water-related disaster risk management in eachcountry and discuss solutions;3.

Collect comments and suggestions about ICHARM’s educational programs and approaches toimprove and plan future activities of ICHARM and PWRI.

Seventeen graduates, who made a presentation in collaboration with researchers of ICHARM at
31

ICFM9, participated in the seminar with current students. Please refer to section 2.5 for more
information.
4.4 Internship
ICHARM has accepted interns from both Japan and overseas since its establishment in 2006. In
FY2022, ICHARM accepted eight interns: one from the National Scientific and Technical ResearchCouncil of Argentina, one from the Malaysia-Japan International Institute of Technology of Malaysia,
two from the University of Nagoya, Japan, two from the University of Tokyo, Japan, one from
Fukushima University, Japan, and one from Tokyo Institute of Technology, Japan. From two weeks toseveral months, they studied their research themes while getting supervision from ICHARM researchers
about hydraulic and hydrologic analysis, sediment transport analysis, disaster risk analysis, and othertopics. Figure 4-1 shows the number of internship days by institution. Interns stay at ICHARM.
ICHARM has held the Follow-up Seminar once a year since 2007 in a country of graduates fromICHARM educational and training programs to provide additional assistance and visit rivers and otherplaces with water-related problems. This annual meeting is a great opportunity for ICHARM to see how
graduates are using the knowledge and skills they learned at ICHARM and to share issues they face intheir practices. Such information is used to improve ICHARM’s training programs and research
activities.

Fig. 4-1 The number of internship days by institution between 2006 and 2022

32

５．Information Networking
ICHARM has been consistently strengthening its information network on various occasions. In thispast year, it hosted major international conferences and side events as part of networking activity,
including the 4th Asia-Pacific Water Summit, the 9th International Conference on Flood Management,
and the UN Water Conference 2023. Through these events, ICHARM disseminated its advocatedconcepts of knowledge integration, capacity integration, and process integration to the world, together
with the achievements of its research and projects.
In addition, ICHARM continued working closely with the International Flood Initiative (IFI) to builda "Platform on Water Resilience and Disasters" in individual countries, as well as with the Typhoon
Committee, particularly by playing a leading role in its Working Group of Hydrology, thereby
adequately demonstrating the presence of the institute and Japan to the member countries.
5.1 International conferences
5.1.1 Fourth Asia-Pacific Water Summit
The 4th Asia-Pacific Water Summit (APWS4) was held in Kumamoto City, Japan, on April 23-24,
2022, to gain a holistic understanding of and discuss practical solutions to water-related issues basedon strong leadership and effective resource mobilization exerted by the Heads of States andGovernments (HSG).
ICHARM played a vital role in planning and operating this international conference. It co-hosted
Parallel Thematic Session I “Water and Disaster/Climate Change” with other domestic and overseasorganizations and organized a special session named “Showcase.”It also co-hosted an integration
session on “Science and Technology” with UNESCO.
The Showcase session invited H.E. Dr. Basuki
Hadimuljono, the minister for Public Works andPublic Housing, Indonesia, and Dr. Salles, theregional director of the Department of Science andTechnology Region XI, the Philippines, to speak
about the projects that ICHARM has supported intheir countries: the e-learning program for facilitator
training in Indonesia and the OSS-SR implemented

Photo 5-1 Panelists discussing at the integration
sessionin the Philippines.
To prepare the Kumamoto Declaration, ICHARM
contributed to developing the three key proposals, i.e.,“promoting water cycle consilience,” “fostering
facilitators,” and “taking an end-to-end approach,” asanswers to the HSG’s question asking what rolescience and technology should play to support leadersin making cross-sectoral decisions and including them
33

Photo 5-2 Participants in the special session

in the Chair’s Summary, which provides the overview of all the discussion results from the summit.
5.1.2 Nineth International Conference on Flood Management (ICFM9)
On February 18-22, 2023, GRIPS and ICHARM co-hosted
ICFM9. The conference was convened in Japan for the first time in
12 years since ICHARM hosted the 5th meeting in Tokyo, Japan, in
2011. It is held every three years, providing a forum for researchersand practitioners with different backgrounds to gather and discussvarious issues related to floods and share the latest knowledge, information, and experience withfellow experts in order to achieve significant academic and cross-disciplinary changes.
a) Preparation
After proposing hosting ICFM9 at the ICFM webinar in August 2021, ICHARM discussed thegoals that we should aim for as the host institution. As a result, we set the two goals. Our first goal
was to gather and sort out diverse knowledge and use it to redefine ICHARM’s activities, including
its direction and role, in water-related disaster management, as necessary. We regarded ICFM9 as
an excellent opportunity for this purpose since it would allow us to overview flood-related research,education, and policies from an international perspective and expose us to up-to-date, wide-ranged,
scientific knowledge in Japan and overseas through the planning and operation of ICFM9. Our
second goal was to strengthen the connection with and among the graduates of our master’s anddoctoral programs and thus enhance our capacity to organize international cooperation.
Also, as explained in Chapter 2, in order for ICFM9 to be a bridge from APWS4 to the United
Nations Water Conference, we deemed it necessary to ensure proper coordination between the core
topics of ICFM9, i.e., science, technology, education, and capacity development, and domestic
policies in Japan. To address this issue, we consulted with Director General INOUE of the Water
Management and Land Conservation Bureau of MLIT and Professor HIROKI of GRIPS, who isalso the executive director of HELP, and decided, with their agreement, that they and Executive
Director KOIKE would co-chair the ICFM9 Local Organizing Committee (LOC), and also invite
experts from industry, government, and academia to join LOC and provide advice on the planningand operation of ICFM9.
The overall theme of ICFM9 was set as "River Basin Disaster Resilience and Sustainability by
All - Integrated Flood Management in the Post COVID-19 Era." The main part of the theme, "River
Basin Disaster Resilience and Sustainability by All," is the official English translation of the newflood management policy addressed by MLIT of Japan. The new policy was developed to cope with
the impacts of climate change, and the related budget plans were passed in April 2021, though someprojects had started earlier in FY2020 to meet the urgent need to strengthen flood resilience in someparts of the country.
We expected that ICFM9, planned to be held in Japan, would be a unique opportunity to discuss
Japan’s new flood control policy internationally from the perspective of science and technology.
34

However, we also decided that the title, "River Basin Disaster Resilience and Sustainability by All,"
would not be used to refer to Japan’s new policy at ICFM9, but rather to mean "enhancing water
disaster resilience and sustainability by all stakeholders in the basin."
ICHARM staff then discussed the composition of the sessions, considering the overall theme
and the first goal. Several “theme teams,” each consisting of three or four staff members, wereformed to propose, plan, and manage the sessions. After organizing the session concepts and plans,
we contacted leading international experts in each research area and requested them to serve as
session chairs. The representative of each theme team also served as co-chair for each session.
In addition, in order to achieve the second goal, ICHARM held an online seminar on February
25, 2022, with 80 participants, about half of the graduates from ICHARM’s graduate-level
programs. The Follow-up Seminar was also held on February 22, 2023, and 17 graduates who werein Japan for ICFM9 joined the meeting along with many other participants. (described in section
2.5)
In addition, a subsidy from the Tsukuba Tourism and Convention Association was used for theoperating expenses of the site visits. With the support of UNESCO, participation fees and domestic
travel expenses were supported for 10 young researchers from developing countries.
b) ConferenceOn

February

symposium,

18,

2023,

“Integrated

a
Water

high-level
Cycle

Management in the Post COVID-19 Era,” washeld at GRIPS, attended by His Majesty theEmperor of Japan.
The morning session opened with greetingsfrom Dr. Han Seung-soo, the chair of HELP and
the former prime minister of the Republic ofKorea. The session continued with keynote

Photo 5-3 The high-level panel in the symposium(Photo: GRIPS)

lectures: H.E. Ambassador Csaba Kőrösi, the president of the 77th Session of the UN General Assembly, on game changers that should be adopted at the UN Water Conference; Professor Petteri
Taalas, the secretary-general of WMO, on an early warning initiative; and Mr. Pablo Bereciartua,
the chair of the Global Water Partnership on resident-participatory water management. ICFM Chair
Slobodan P. Simonovic followed, speaking about decision making based on scientific evidence.
In the afternoon session, GRIPS Professor Hiroki moderated a high-level panel entitled“Integrated Flood Management in the Post-Corona Era,” with expert panelists in various fields,
including Dr. Johannes Cullmann, the director for SDGs of the Office of the 77th President of the
UN General Assembly, and Executive Director Koike.
The plenary session, held at the Tsukuba International Conference Center from the 19th to the
21st, was attended by 394 flood experts from 41 countries and regions, including Japan. Under its
grand theme, presentations and discussions took place on important issues to be addressed in the35

post-corona era, including how to rebuild a flood-resilient society and how to transform the current
flood management into comprehensive and multi-layered water-related disaster risk reduction thatcombines hard and soft measures and takes climate change impacts into account. Despite thelingering effects of the corona crisis, the number of participants was almost double the expected
number, and each session and project was successful.
At the opening ceremony, ICFM Chair Simonovic and PWRI President FUJITA made opening
remarks on behalf of the organizers. Mr. OKUMURA, the director-general of NILIM, and Mr.
IGARASHI, the mayor of Tsukuba City, also greeted the participants. After the greetings, Professor
Emeritus of Yamanashi University TAKEUCHI was awarded the ICFM Lifetime Achievement
Award by ICFM. Professor KOTANI, the executive vice president for research of Tohoku
University and the vice president of the International Science Council, delivered the keynote speech
online entitled “The responsibility of science, entrusted to us by society.”
Four plenary sessions included panel discussions on coordinated activities, lectures on
integrated flood management and response to changes, and showcases to share best practices from
Asia, Africa and Latin America. Ultimately, a total of 24 sessions were held, with nine parallelsessions, and 143 oral presentations were given. There were 48 poster presentations, and after thereview, four poster presentations were awarded at the closing ceremony.
ICHARM researchers co-chaired all 24 sessions and delivered presentations on research
projects using the end-to-end approach, such as the development of a method for creating asediment and driftwood hazard map, a real-time water level forecasting system for small andmedium-sized rivers, and a virtual flood experience system.
There were also five special sessions on cross-cutting themes and eight technology exhibitionbooths to showcase private companies' flood-related technologies. As a side event, ICHARM
hosted a public symposium entitled "Can You Survive an Unexpected Flood?" with the support of
the River Foundation (described later in section 6.7).
At the closing ceremony, Mr. KUSANO, the assistant vice-minister for Disaster Prevention andRisk Communication of MLIT delivered a presentation entitled “Japan’s New DRR Policy – River
Basin Disaster Resilience and Sustainability by All –,” followed by the presentation of theStatement of ICFM9. Finally, Professor Paul Kovacs, the executive director of the Institute forCatastrophic Loss Reduction (ICLR), announced that ICLR will host ICFM10 in summer 2026.
The final ICFM9 statement calls for:

Utilizing the end-to-end approach that links cutting-edge science with on-site crossdisciplinary decision-making and action;

Promoting the collecting, archiving, and sharing of data and information;Improving models of increasingly intense floods and their economic impacts;

Accelerating knowledge integration

Enhancing the fostering of facilitators; andConducting flood management based on an understanding of social inequalities and36

indigenous peoples’ rights.
On the afternoons of the 21st and 22nd, site visits, conducted in cooperation with JAXA and
MLIT’s river offices, were offered to those who wished to participate.
Details can be found in the report posted on the ICHARM website.

Fig. 5-4 Participants in ICFM9

5.1.3 UN 2023 Water Conference
The UN 2023 Water Conference was held on March 21-24, 2023, at the UN Headquarters in New
York, the U.S.A., attended by about 10,000 participants, including those online. It was the firstmeeting in 46 years held to exclusively discuss global water issues.
As part of the 6th UN Special Thematic Session on Water and Disasters, held on the 21st prior to
the plenary session, the Science and Technology panel was held, where Executive Director KOIKE
Toshio served as moderator and ICHARM introduced its international projects in terms of knowledge
integration, capacity integration, and process integration. These three concepts were also mentioned
in the Co-Chair's Key Messages that were adopted after “Interactive Dialogue 3: Water for Climate,
Resilience and Environment: Source to Sea, Biodiversity, Climate, Resilience and DRR," which Japan
co-chaired with Egypt on the 23rd. The concepts advocated by ICHARM were also included in the“Water Action Agenda,” the primary outcome of the plenary session, as “Water Cycle Integrator”
among the commitments proposed by numerous organizations.

Photo 5-5 Speakers of the Science and Technology panel of the 6th UN Special Thematic Session on Water
and Disasters

37

5.2 International Flood Initiative (IFI)
IFI, implemented in collaboration with UNESCO and other UN agencies, has been working withgovernment agencies and relevant organizations in the Philippines, Sri Lanka, Indonesia, and othercountries to establish "platforms on water resilienceand disasters." ICHARM has been supporting theseprojects as the secretariat of IFI.
In FY2022, in addition to presentations atinternational conferences about the projects indifferent countries, as described in section 5.1,
ICHARM had meetings with principal members of
relevant organizations, such as Dr. Renato U.
Solidum, Jr., the undersecretary of DOST, and Dr.
Vicente B. Malano, the director of PAGASA, to reportand discuss the progress in the development of OSSSR, which is a primary outcome of the platform

Photo 5-6 Dr. Anthony C. Sales speaks about
the Platform on Water Resilience and Disasters
at Davao City, the Philippines at a parallelsession of ICFM9

project, and the results of the facilitator training workshops. ICHARM also hosted an online session of
Asian Water Cycle Initiative (AWCI) as a pre-event meeting before the 15th Asia-Oceania Group on
Earth Observations (AOGEO), which was scheduled for September 21, 2022, and shared informationand exchanged opinions about the platform projects with the participating countries’ stakeholders andthe Asian Development Bank (ADB), and the World Water Partnership.
5.3 UNESCAP/WMO Typhoon Committee (TC)
TC is an intergovernmental community jointly organized in 1968 by the Economic and Social
Commission for Asia and the Pacific (ESCAP) and WMO to promote and coordinate the development
and implementation of plans to minimize human and physical damage caused by typhoons in the AsiaPacific region. Senior Researcher MIYAMOTO of ICHARM currently chairs the Working Group of
Hydrology (WGH), leading its activities with support from MLIT.
On October 18, 2022, the 11th annual WGH meeting was held in Tokyo, Japan, in a hybrid format.
The members reported on the typhoon events and damage in 2022, and each leader of the seven Annual
Operating Plans (AOPs) presented the results and progress of their efforts. They also discussed the future
operation structure of WGH and proposed that Japan continue to chair WGH and that WGH maintain achair and vice-chair for its management.
The 55th TC Annual Session was held online on March 7-9, 2023. About 90 participants attended themeeting from 13 nations and territories (China, Democratic People’s Republic of Korea, Hong Kong,
Macau, Japan, Lao PDR, Malaysia, the Philippines, Republic of Korea, Singapore, Thailand, Vietnam,
and the United States), UNESCAP, WMO, and the TC Secretariat. From the government of Japan,
representatives of MLIT and JMA participated. From ICHARM, two researchers participated: Senior38

Researcher Miyamoto, the current chair of WGH, and Researcher KAKINUMA. Miyamoto reviewed
the AOPs of WGH for 2022 and proposed new AOPs for 2023. The meeting also agreed that he would
continue to serve as chair and vice-chair of WGH for the next term from 2023 to 2025 (the chair is
supposed to assume the vice-chair position).

Photo 5-7, 5-8 Participants in the 11th WGH annual meeting (left: in person, right: online)

5.4 International contribution in hydrology
5.4.1 UNESCO Intergovernmental Hydrological Programme (IHP)
UNESCO-IHP, established in 1975, is UN’s only intergovernmental
programdedicatedtowater-related

issues,includingscience,management, education and capacity building.
IHP sets a mid-term plan every eight years and is currently in the midstof its ninth plan (UNESCO-IHP-IX: 2022-2029). Under the theme of"Science for a Water Secure World in a Changing Environment," the plan
aims to help member countries complete the goals set to achieve by 2030, including the 2030 Agenda,
SDGs, especially its water-related ones, and water-related global goals, such as the Paris Agreement
and the Sendai Framework for Disaster Risk Reduction. IHP has addressed the following five key
water priority areas:
1.

Scientific Research and innovation

2.

Water education in the Fourth Industrial Revolution including Sustainability

3.

Bridging the data-knowledge gap

4.

Integrated water management under conditions of global change

5.

Water governance based on science for mitigation, adaptation, and resilience

UNESCO-IHP-IX has three cross-cutting working themes, and the ICHARM executive director
chairs one of them: "Hydrological systems, rivers, climate risk and water-food-energy nexus."

39

5.4.2 Relationship with WMO
The 1st face-to-face meeting of the
WMO Regional Association II (RAII)
Hydrological Coordination Panel (HCP)
was held in Vientiane, Lao PDR, from
October 31 to November 1, 2022. SeniorResearcher

MIYAMOTO

participatedfrom ICHARM. At the meeting, experts inhydrology and water resources from WMO
RAII discussed work plans and milestones
for activities related to hydrology andPhoto 5-9 The 1st face-to-face meeting of the WMO
Regional Association II Hydrological Coordination Panelmade a consensus on the implementationplans. Miyamoto confirmed that he would lead two themes: the enhancement of flood resiliencethrough a platform on water resilience and disasters and the expansion of the helpdesk for integrated
flood management to include IWRM. In addition, the HydroSOS (Global Hydrological Status andOutlook System) implementation workshop was held and discussed plans to implement HydroSOS
in four sub-regions in Asia (Central Asia, East Asia, South/Southeast Asia, and West Asia), which is
WMO’s system for monitoring and predicting global hydrological status. The workshop also proposedthat Miyamoto would take the lead in the implementation project in East Asia.
5.5 Other international networking activities
5.5.1 Stockholm World Water Week (SWWW) 2022
SWWW 2022 took place from August 23 to September 2, 2022, with more than 300 sessions andover 5,400 participants from 160 countries. ICHARM actively contributed to the event by co-hosting
sessions with partner organizations and giving presentations on its activities. On August 24, Executive
Director KOIKE participated as a panelist in a session, “Water Security Data: going beyond collection
to making impact,” which Asia-Pacific Water Forum (APWF) and ADB co-hosted with some otherorganizations. On the 25th, ICHARM co-organized a session, “End-to-end Approach for Valuing
Water on Climate Actions,” with its partners, including APWF and the Global Water Partnership(GWP). Director for Special Research MORI made a presentation. On the same day, Deputy Director
MATSUKI attended a session, “NBS for Climate Action with Sound Watershed Management,”
organized by the Northern Water Network (NoWNET), and spoke about Japan’s traditional riverengineering.
5.5.2 Asian Water Cycle Initiative (AWCI) Session of the 15th Asia-Oceania Group on Earth
Observations (AOGEO) Symposium

40

The AWCI Session was convened online on
September 21, 2022, as a sectional meeting of the
15th AOGEO Symposium. More than 50 people
participated from the Philippines, Sri Lanka, andIndonesia,

UNESCO-IHP,

GRIPS,JAXA,

Global Water Partnership (GWP), ADB, and
ADB Institute (ADBI).
The participants shared the latest progress of
the IFI platform project and discussed the
direction of AWCI activities towards the UN

Photo 5-10 Participants in an AWCI session

Water Conference 2023 in the context of the
Kumamoto Initiative for Water and other important statements, which were adopted at APWS4, heldin April 2022 in Kumamoto City, Japan. Thematic presentations were also delivered, showcasing
cutting-edge research and development in science, governance, and finance. The results of the session
were presented at the 15th AOGEO Symposium from September 28 to 30.
5.6 Other domestic networking activities
5.6.1 The Integrated Research on Disaster Risk (IRDR) Subcommittee of the Civil Engineering andArchitecture Committee of the Science Council of JapanThe IRDR subcommittee aims to strengthen interaction
with stakeholders and practitioners and aid, academic, andother organizations both in Japan and overseas, including the United Nations; encourage open andprofound discussions on IRDR plans for the next term; and lead the initial-phase activities set in thenext-term plans of IRDR. Executive Director KOIKE Toshio is a member of the Civil Engineeringand Architecture Committee and the IRDR subcommittee. In addition, a group for the promotion of
IRDR activities has been created under the subcommittee, of which a chief researcher of ICHARM
serves as a member.
5.6.2 Japan Hub of Disaster Resilience Partners (JHoP)
JHoP was established in March 2019 with support
from the IRDR Japan National Committee and the
Subcommittee for IRDR of SCJ, with NIED serving
as its secretariat. Currently, 17 organizations, including ICHARM, participate in this project.
JHoP, according to its terms and conditions, aims to form a network of various organizations thatcooperate to build science-based, disaster-resilient societies in Japan and overseas. To achieve thisgoal, JHoP promotes interdisciplinary and trans-disciplinary collaboration by inviting universities,
research institutes, and administrative organizations involved in disaster management efforts fromvarious disciplines of physics, engineering, agriculture, social science, psychology, health science,41

and medicine and encouraging them to actively demonstrate their research, educational, and practicalexpertise. JHoP also seeks to develop OSS-SR and foster facilitators as tools that can be effectively
applied to DRR, CCA, and SDGs, as proposed in the 2020 recommendation of SCJ regarding therealization of a sustainable international community by strengthening disaster resilience.

Fig. 5-1 A conceptual image of a network for promoting research and capacity development with JHoP at thecore of the industry-government-academia-private collaboration (source: https://www.bosai.go.jp/jhop/en/)

5.7 Memorandum of Understanding
As part of its international networking activities, ICHARM signed a Memorandum of Understanding(MoU) with the Mayor de San Simón University (UMSS) of Bolivia on June 23, 2022, aiming toenhance cooperation in research and development on resilience to natural disasters.

Photo 5-11 Participants in the online signing ceremony

42

5.8 Visitors
ICHARM continued to receive many visitors in FY2022.
Among the visitors were Mr. Kwacha Chisiza, the ambassador of the Embassy of the Republic ofMalawi in Japan, on June 17, 2022, and H.E. Mr. Csaba Kőrösi, the president of the United Nations
General Assembly, on February 16, 2023. They had a meeting with the executive director and other
ICHARM staff. In particular, the ambassador also met with a Malawian student presently enrolled in themaster’s program. ANNEX 2 shows the list of visitors to ICHARM.

Photo 5-12 Ambassador Chisiza (left), shaking hands with a Malawian student

Photo 5-13 Mr. Kőrösi, the president of the UN General Assembly43６．Public Relations
6.1 Newsletter
ICHARM Newsletter has been published four times a year
since March 2006 to publicize ICHARM’s activities in research,education and training, and local practice projects, as well as a listof published papers. In recent years, in addition to articles written
by ICHARM staff, the newsletter includes ones contributed bymaster’s program graduates and other experts at internationalorganizations, such as the United Nations, in an attempt to gather
news from diverse perspectives.
In FY2022, we published four issues of newsletter from No. 64
to No. 67. The number of readers has reached about 5,000
worldwide. ANNEX 3 lists the articles published in the four
issues.
For easy access to the more than 1,000 articles that haveappeared in our newsletter since 2006, we have created andFig. 6-1 ICHARM Newsletter No. 64

posted a list of all the articles and added a search function to our
website.
6.2 Website
We use the website to provide the public with the latest information on research and project progress,
as well as notices of upcoming events.
ANNEX 4 provides a list of major updates for FY2022.
6.3 Brochure
The ICHARM brochure has been updated to reflect the content of the ICHARM Programme, which
was adopted by the 6th ICHARM Governing Board Meeting on June 21, 2022. In addition to the
executive director’s comments, the new brochure exhibits how the ICHARM Programme relates to theglobal and national plans. It is also visually organized to help readers understand how ICHARM
practices the end-to-end approach in its research projects.
6.4 Open Day
The ICHARM Open Day is held every year during the Science and Technology Week in April as one
of ICHARM's community contribution activities, inviting students from local schools and providingthem with international exchange opportunities. The Open Day 2022 was held as a webinar, just like thelast year’s, to prevent the spread of the COVID-19 infection. A total of 91 students joined this online
event from Ibaraki Prefectural Takezono High School and Ibaraki Prefectural Namiki Secondary School.
The executive director made a keynote lecture titled “Water-related Disasters Intensified by Climate
44

Change and Sustainable Development Goals (SDGs),” and 16 master’s and doctoral students spoke
about life, culture, and some issues regarding water-related disasters in their nations.

Photo 6-1 Participants in the ICHARM Open Day

6.5 R&D Seminar
The ICHARM R&D Seminar is held on an irregular basis to provide an opportunity for researchers
to keep up with the latest knowledge and information by inviting domestic and international experts inthe field of hydrology and water-related disasters. In FY2022, two seminars were held, as shown in thetable below, attended by many participants, including those from PWRI and NILIM.

Table 6-1 ICHARM R&D Seminar held in FY2022

Affiliation

No.

Date

Speaker68

Apr. 26,

Dr. Anthony C.

Regional Director, DOST,

Advanced Activities

2022

Sales

Regional Office No. XI,

Resilience

Philippines

Philippines

69

Title

(at the time of seminar)

University

in

for

Flood

Davao

City,

Oct. 11,

Prof. András

Nationalof

The Global Changes and their

2022

Szöllősi-Nagy

Public Service, Budapest,

Impacts on the Hydrological Cycle

Hungary45

Photo 6-2 Dr. Anthony C. Sales at the 68th ICHARM R&D Seminar

Photo 6-3 Prof. András Szöllősi-Nagy at the 69th ICHARM R&D Seminar

6.6 Flood Workshops for junior high and high school students
ICHARM conducted first workshops about floods at six junior high and high schools in the Tsukuba
area in January and February in cooperation with the Shimodate River Office of the Kanto Regional
Development Bureau of MLIT. Using the virtual flood experience system developed by ICHARM in
recent years, students first experienced information gathering and evacuation during a flood event. They
then listened to MLIT staff explain “My Timeline” and tried out the “My Timeline” tool designed
specifically for children to plan what to do when notified of a possible flood.

Photo 6-4 A flood workshop at a local school using a virtual flood experience system46

6.7 Public symposium
On February 19, 2023, coinciding with
ICFM9, a public symposium, “Can you survive
unexpected floods?: e-sports@KasenBosai,” washeld at ICHARM, attended by about 70 people,
including students from five local schools, who
had received a flood workshop in advance, andfrom Tsukuba University. After Professor OKI
Taikan of the Graduate School of Engineering of
the University of Tokyo, who is also the special
advisor to the university president, delivered a
Photo 6-5 A scene from the “e-sports@KasenBosai”
event

keynote lecture titled “Climate Change andFloods,” the students competed with each other bydemonstrating their knowledge and skills in a game-like event using a virtual flood
experience system.
This symposium is subsidized by the River Foundation of Japan.
6.8 Visit by high school students
On November 1-2, 2022, 38 first-year studentsof the Disaster Science Department of Miyagi
Prefecture Tagajo High School and their teachersvisited ICHARM. The prefecture was severely
affected by the Great East Japan Earthquake andsubsequenttsunamis.

Theylistenedtopresentations by researchers on their research
projects, such as the development of a water level
forecasting system for small and medium-sized
rivers and a method for predicting future hazards

Photo 6-6 Students listening to a lecture about
international networking

under climate change. They also listened to presentations on other ICHARM’s activities, such as efforts
to expand a network worldwide and provide technical assistance in the Philippines.
6.9 Publication
ANNEX 5 shows the list of research papers, articles published by ICHARM staff.

47

７．Awards
7.1 Awards
The following table is a list of the awards
received by ICHARM staffers for their high quality
research, presentations and academic papers in
FY2022.
On December 14, Executive Director Koike
received the American Geophysical Union (AGU)
Ambassador Award at the Honors Ceremony of theAGU Fall Meeting 2022. In addition to his scientificPhoto 7-1 Executive Director Koike (center, right),
receiving the AGU Ambassador Award

activities, the award recognized his dedication to educating the new generation of scientists in many
developing countries, such as Bangladesh and the Philippines.
Table 7-1 The list of awards in FY2022
Recipient,
position
KOIKE Toshio,
executive
director
HARADA
Daisuke,researchspecialist
KAKINUMA
Daiki,
researcher
PWRI,
The
University ofTokyo
KOIKE Toshio,
executive
director

Fellow

Outstanding achievements, experience,and insight in engineering and industry

Best
Presentation
Award,
SymposiumonRiver Engineering,
JSCE, 2022
Best Paper Award,
SymposiumonRiver Engineering,
JSCE, 2022
theExcellenceAward of the Good
Digital Award 2022

METHODS TO ANALYZE FLOOD
FLOW WITH A HUGE AMOUNT OF
SEDIMENT AND DRIFTWOOD

Awarding
organization
Japan Federation ofEngineering
Societies
River Group, Japan
Society of Civil
Engineering (JSCE)DEVELOPMENT OF REAL-TIME
FLOOD FORECASTING SYSTEM FOR
THE SMALL AND MEDIUM RIVERS

River Group, Japan
Society of Civil
Engineering (JSCE)

2022/6/16

Development of a system to conduct data
assimilation method using observed waterlevels and provide predicted water levels
using forecast rainfall data for small andmedium-sized rivers
Lifetime commitment to scientificdevelopments
andoutstanding
contributions to social impact, service tothe Earth and space community, scientificleadership, and promotion of talent/career
pool

Digital Agency

2022/12AGU

2022/12/14

Award

AGU Ambassador
Award

Achievement, paper, etc.

48

Date
2022/62022/6/16

7.2 ICHARM Best Paper Award
ICHARM established the ICHARM Best Paper Award in 2009 to select and honor the best paper ofthe year among peer-reviewed papers whose first author is an ICHARM staffer.
In FY2022, the following paper was selected for the award, and the ceremony was held on February
20, 2023, together with the co-author who was in Japan to attend ICFM9.
Title: Co-design for enhancing flood resilience in Davao City, Philippines
Authors: M. Miyamoto, D. Kakinuma, T. Ushiyama, A. W. M. Rasmy, M. Yasukawa, D. G. Bacatos, A.
C. Sales, T. Koike and M. Kitsuregawa
Journal: Water 2022, 14, 978Photo 7-2 Ceremony of the ICHARM Best Paper Award49

８．Management
8.1 ICHARM Governing Board
ICHARM holds a Governing Board meeting
once a year in accordance with Article 6 of theAgreement

between

UNESCO

andthe

Government of Japan on the Continuation of
ICHARM, revised and signed on February 13,
2020.
The 6th Governing Board meeting was held
on Tuesday, June 21, 2022, from 16:00 to 18:00
at the TKP Ichigaya Conference Center in a
hybrid format, attended by a total of eight
members from Japan and abroad, including
PWRI President Koichi Fujita, who chaired themeeting, as shown in Table 8-1.
The

board

members

discussed

andPhoto 8-1 (top) Meeting in session
Photo 8-2 Participants in the board meeting

unanimously adopted the ICHARM Programme, which had been revised in line with the PWRI Midand Long-Term Plans, whose implementation began in FY2022, and the Work Plan, which is the action
plan for the next two years.
The board members also expressed their expectations for ICHARM's contribution to the mid-term
review of the International Decade for Water Action and the Sendai Framework for Disaster Risk
Reduction, scheduled for 2023, as well as to the implementation of the Kumamoto Declaration and thefurther promotion of research, capacity building, and international networking.
Table 8-1 The list of participants in the 6th ICHARM Governing Board Meeting(The names are listed in affiliation's alphabetical order)
Board member

Position & affiliation

Nobuhiro HOSOE

Vice President, GRIPS

Eiji IWASAKI

Director General of Global Environment Department, JICA, on behalf of Mr. Akihiko
TANAKA, President, JICA

Mikio YOSHIOKA

Vice Minister for Engineering Affairs, MLIT

Koichi FUJITA

President, PWRI

Yuki MATSUOKA
Anil MISHRA
Kaoru TAKARA
Johannes CULLMANNHead of the UNDRR Office in Japan, on behalf of Ms. Paola ALBRITO, Chief of Branch,
Intergovernmental Processes, Interagency Cooperation and Partnerships, UNDRR
Chief of Section, Hydrological Systems, Climate Change and Adaptation (HSA),IHP Secretariat, UNESCO, on behalf of Ms. Audrey AZOULAY, Director-General,
UNESCO
Professor, Kyoto University, on behalf of Mr. Yasuto TACHIKAWA, Chair Holder,Research and Educational Unit of UNESCO Chair on Water, Energy and Disaster
Management (WENDI)
Director, Water and Cryosphere, on behalf of Ms. Elena MANAENKOVA, Deputy
Secretary-General, WMO

50

8.2 Organization
The number of ICHARM staff was 47 as of April 2022, and 48 as of March 2023 shown in Table
8-2. Since ICHARM is a research center of PWRI, which is under the management of MLIT, manyof its staff are seconded from MLIT. In addition, as an international center, ICHARM employs foreign
researchers mainly as research specialists. As of April 2022, there were seven of them at ICHARM.
The main responsibilities of each position are described below, with reference to PWRI’sorganizational regulations, circulars, and administrative instructions:
The executive director of ICHARM is in charge of the overall management of ICHARM.
The deputy director of ICHARM assists the executive director in fulfilling its responsibilities. In
addition, the deputy director, since also assuming the director of Water Hazard and Risk Management
Research Group, oversees the research and other activities of the group. The Water Hazard and Risk
Management Research Group is defined to conduct investigation, testing, research, training, anddevelopment and guidance of civil engineering technologies related to the following matters:
1.

International dissemination of technologies for the prevention and mitigation of water-related
disasters

2.

Risks posed by water-related disasters

3.

Management of water-related disaster risks

The director for special research manages affairs related to particularly important research that do
not belong to the scope of the group.
The research and training advisor provides necessary guidance to researchers and trainees.
The deputy general counsellor and the chief staff manage the administrative work of ICHARM.
Chief researchers, under the direction of the deputy director, conduct the work that belongs to thescope of the group, including investigation, testing, research, and the development and guidance of
civil engineering technologies.
Senior researchers and researchers conduct their respective duties under the direction of chief
researchers.
Research specialists support research work requiring a high level of expertise under the guidanceand supervision of the deputy director or chief searchers.
Collaborating researchers are those accepted by PWRI from private companies (consultants,

contractors, manufacturers), public corporations, local governments, and other entities. Theircompensation and expenses, such as travel expenses, are generally covered by their organizations.
Research assistants are employed from students enrolled in the "Doctoral Program in Disaster
Prevention", a joint program of PWRI and GRIPS, and work under the guidance and supervision of
the deputy director or chief researchers to support research and training projects that require a highlevel of expertise and advanced English language skills necessary to carry out the projects.
Assistants provide support to researchers and administrative staff in the performance of their duties.

51

Table 8-2 The list of ICHARM staff

Position

No. of staff(as of Apr.
2022)

Executive Director of ICHARM

1

1(Director of Water Hazard and Risk
Management Research Group)

1

1

Director for Special Research

11Research and Training Advisor

1

1

Deputy Head(administrative staff)

22

Chief Staff(administrative staff)

2

Chief Researcher

3(4 since July)

Senior Researcher

9(8 since May)

Researcher

2

Research Specialist

10

Collaborating Researcher

1

Deputy Director of ICHARM

No.
offoreign/female
staff

Female:1

2

Female:14Foreign: 1,
Female: 18Foreign: 1,
Female: 12Foreign: 4,
Female: 310Foreign: 4,
Female: 312Foreign: 2(3 since Oct.)(3 since Oct.)

Assistant

12

Total

47

Research Assistant

No. of staff
No.
of(as of March foreign/female
2023)
staff

3

Foreign: 3

Female: 10

12Female:10

Foreign: 7,
Female: 15

48

Foreign: 8,
Female: 15*Foreign female employees are duplicated in both “Foreign” and “Female.”

52

53

ANNEX 1
Number of Alumni of ICHARM training program
Ph.D. Program "Disaster Management"

1
1
2

1
1

1
1
1
0

6

1
1

0

0

0

0

0

0

0

0

0

0

2

0

0

1
2

0

0

0

0

0

0

0

0

1

0

2

0

0

0

0

1
1

0

0

0

0

2
2
2
2
2
2
2
1
2
2
1
2
1
2
0 25

3
2
1
2
2

1
1
1
1

3
1
3
1
2

1
1

1
1

1

1
1

1
1

2
1

1

1

1
1
1
2
2
1
5

1
1
1
1
1

1
3

2

1
1
1

1

1
1

2

0

5

0 11 3

1

2

0

3

1

5

1
8

4

4

0

1
2
5

2
1

1
1
2

1

1

1
3
2
1

1
6

1

1

1
1
2
2
2

1
1

2
1

1

1
1
2
2

1

1

1

2

1

1
1

1
2
1
2

2
1
1

1
1 10 15 0

1 16 1

2
9

1

1

3
1 15 0

1

1

2

0

0

1
1

0

0

Total

Liberia

Zimbabwe

VietnamVenezuela

Tunisia1

Master's. Program "Water-related Disaster Management Course of Disaster Management Policy Program"
2007-2008
2008-20092009-20102010-20112011-20122012-20132013-20142014-2015
2015-20162016-20172017-20182018-20192019-2020
2020-2021
2021-2022
Total

Tonga

Timor-Leste

Thailand

Tanzania

Tajikistan

Sri Lanka

SerbiaRepublic of Albania

Philippines

Papua New Guinea

Pakistan

Nigeria

Netherland

Nepal

Myanmar

Mozambique

Mauritius

Maldives

MalawiMalaysia

Laos

Kenya

Japan

Indonesia

India

GuatemalaFijiDjibouti

Ethiopia

El Salvador

Colombia

China

Cambodia

2010-20132011-20142012-20152013-20162014-20172015-20182016-20192017-20202018-2021
Total

BrazilYear

Bosnia-Herzegovina

BhutanBangladesh

Afghanistan

Country(as of September 2022)

1
1
2
3
0
2
2
1
3
15

(as of September 2022)
10
7
12
12
1
1
19
1
12
1
12
13
1
13
2
8
1
14
1
7
11
1
7
13
1 1 2 4 1 1 170

Number of countries with DM & DMP graduates
0 31 5 0 5 0 11 3 1 2 0 3 3 5 8 6 4 0 5 2 1 1 1 10 15 1 1 18 1 9 1 1 16 0 1 1 2 1 1 2 5 1 1

37

JICA training program "Flood Hazard Mapping"
2004
2005
2006
2007
2008
Total

2 2
2 2
2 2
2 2
1 2
9 10

2
2
2
3

3 2
2 2
2 2
2 3
2 2
11 11

9

2
3
2
2
1
10

2
1
2
3
1
9

1
1

1
2
2
2
1
8

16
16
16
20
10
78

JICA training program "Local Emergency Operation Plan with Flood Hazard Map"
2009
2010
2011
Total

1
1
1
3

1
2
2
5

2
2
2
6

1
1
2
4

1
1
1
3

1
1
1
3

1
1

1
1
1
3

1
1
1
3

1
1

10
12
11
33

2

JICA training program "Capacity Development for Flood Risk Management with IFAS"
2012(A)
2012(B)
2013
2014
2015
2016
2017
Total

3
3
3

9

3

3
1
2
6

2
1
1
4

1

0

0

0

0

0

0

1

0

0

1
1
2

0

2

3
3
2
4
2
0 17 0

0

0

0

4
2
2
8

0

2

2
3
2
2
0

0 11 0

3

3
3
4
4
2
0 18 0

0

2
2
2
6

7
3
2

2
3
2

0

0 10 00

0 12 0

0

13
7
16
20
20
18
10
104

JICA training program "Capacity Development for Adaptation to Climate Change"
2010

1

3

1

1

1

7

UN/ISDR Training course "Comprehensive Tsunami Disaster Prevention"
2008

2

4

2

3

11

UNESCO Pakistan Project workshop
2012
2013
2016
2017
Total

2
2
4

LiberiaTotal

1 29 3

Zimbabwe

1 21 16 1 12 36 1 38 1

Vietnam1

Venezuela

3

Tunisia

9 30 6 21 15 16 2

Tonga

3

Timor-Leste

3

Thailand1

Tanzania

2

Tajikistan

1

Sri Lanka

9 21 3

SerbiaRepublic of Albania

Philippines

MozambiquePapua New Guinea

Mauritius

Pakistan

Maldives

Nigeria

Malawei

Netherland

India

5

54

Nepal

Guatemala

MyanmarFiji

Malaysia

Djibouti

Laos

Ethiopia

Kenya

El Salvador

Japan

Colombia

Indonesia

Cambodia

China

Brazil4 44 16 4

Year

Total

6
5
4
4
19

Bosnia-BhutanBangladesh

Afghanistan

Country

6
5
2
2
15

1 23 21

1

2 26 1

1437

ANNEX 2

List of Visitors to ICHARM
Date
April

Name
26,

PurposeDr. Anthony C. Sales,

Invited

2022
June

17,

the

68th

Mr. Kwacha CHISIZA

Purpose: to interview with one
master’s student of Malawi

25,

2022
Octoberfor

ICHARM R&D Seminar

2022
Augustspeaker

Delegate

from

Malaysia-Japan As part of course work “MJIIT

International
4,

InstituteofMasterofDisaster

Risk

Technology (MJIIT)Management Japan Attachment”

Prof. Zhongbo Su and Dr. UENO

To deliver a special lecture2022

Kenichi

October 11,

Prof. András Szöllösi-Nagy

Invited2022

speaker

for

the

69th

ICHARM R&D Seminar

October 11,

Dr. Manuel Antonetti

To lecture on research into flood2022

forecasting and to share information
on research

February 16,

H.E.

Mr.

Csaba

Kőrösi,the To discuss water and climate change2023

president of the United Nations
General Assembly and members of
Office of the PGA, UN

March
2023

13,

DR. KHAMARRUL AZAHARI BIN

To survey studies on sediment-

RAZAK and 4 members of Disaster related disasters and to discuss its
Preparedness
Centerand(DPPC),

International

Prevention

Malaysia-Japan
InstituteofTechnology (MJIIT), and Universiti
Teknologi Malaysia (UTM)

55

future research

AuthorPosition

56

Editor's Note

MiscellaneousComing Events

Information
Networking

Training &Education

IKEDA Tetsuya Director forSpecial Research
KAWAMOTO
Senior Researcher
Takatoshi
KAWAMOTO
Senior Researcher
Takatoshi
NAITO Kensuke Researcher
MIYAZAKI
Chief Staff
Ryosuketo Director General,
Bangladesh Water
Development Board

MIYAZAKI
Chief Staff
Ryosuke
Md Khairul Islam Chief Staff Officer (CSO)

Message from KOIKE Toshio
Executive
Executive Director
Director
FUJITA Koichi President
KAWAMOTO
Senior Researcher
Takatoshi
SpecialYOSHINO
Senior Researcher
TopicsHirosato
MIYAMOTO
Senior Researcher
MamoruKAWAMOTO
Senior Researcher
Takatoshi
NAITO Kensuke Researcher
United Nations
OKADA
Department of Economic
Research
Tomoyukiand Social Affairs
Maksym Gusyev ResearchSpecialist

Category

Volume17, No.1, Issue No.64, April 2022

Follow-up seminar for ICHARM graduates”Integrated Research Program for Advancing Climate Models (TOUGOU)”
research report of ICHARM
HyDEPP-SATREPS project updates: UAV training<Special contribution>
Progress and actions towards achieving SDGs
<Introduction of ICHARM research projects>
Combining hydrologic modeling with environmental isotopes to improveassessment of present and future water-related disasters in Asia
Educational program updates

5
7
9

26

23

21

21

20

18

16

14

12

11

Results of Newsletter surveys (No. 60 - No.63)
Editor's Note

Introduction of the 9th International Conference on Flood Management

Pre-sessions for the thematic session “Water and disasters/Climate change” at
the 4th Asia-Pacific Water Summit
The 54th Annual Session of Typhoon Committee

Action Reports from ICHARM Graduates: Md Khairul Islam

ICHARM's research projects under the next medium- to long-term plans of PWRI

3
4

Greeting from new PWRI President FUJITA Koichi
Commemorative lectures of PWRI former president

1

Contents
Quality-oriented Society

Page

ANNEX 3
List of ICHARM Newsletter articles

Author57

Coming Events

Training &Education

Research

SpecialTopicsPosition

Executive
Director
Executive
Director
Senior Researcher

MIYAZAKI
Chief Staff
Ryosuke
Mohammad Faiz Superintending
Syed
Engineer, Central
Water
Commission, Govt.
of India
MOCHIZUKI
Senior Researcher
Takafumi

NAITO Kensuke Researcher
Vicente G.
Research
Ballaran Jr
Assistant
Kattia Rubi
Research
Arnez Ferrel
Specialist

MOCHIZUKI
Takafumi
NAITO Kensuke Researcher
YOSHINO
Senior Researcher
Hirosato
ISHIWATARIBoard Director,
Mikio
Japan Water
Forum
IKEDA Tetsuya Director forSpecial Research
MIYAZAKI
Chief Staff
Ryosuke
DENDA
Senior Researcher
Masatoshi

Message from KOIKE Toshio
Executive Director
KOIKE Toshio

Category

Volume17, No.2, Issue No.65, July 2022

Special Session “Showcase”
Integration Session: Science and Technology

3

5

Malawian Ambassador to Japan visited ICHARM

11

21

19

17

15

14

13

12

6th ICHARM Governing Board Meeting was held

10

Preparation for the 9th International Conference on Flood Management (ICFM9)

Action Reports from ICHARM Graduates： Mohammad Faiz Syed

Efforts to increase VFES’s public availability: An experiment at Kumamoto City
to test the applicability of low-cost data from a commercial 3D city model and
360° cameras
ICHARM held the 68th R&D Seminar
The 2nd Joint Coordinating Committee Meeting of HyDEPP-SATREPS and UAV
observation training for crop monitoring<Introduction of ICHARM research projects>
How does suspended sediment affect bed evolution in a suspended-loaddominated river? Numerical simulations on a meandering river of the Bolivian
Amazon basin
Educational program updates<Special contribution>
Regional leaders pledge their commitment to the Kumamoto Declaration

8

6

4

Report on the Kumamoto Summit: Roles of science and technology intransformation
Theme 1: Water and Disaster/Climate Change

1Contents
Autonomous, decentralized and coordinated society

Page

ANNEX 3

Editor's Note

Miscellaneous

Public Relations

Position

Research
Specialist
IKEDA Tetsuya Director forSpecial ResearchPema Syldon
Graduate Schoolof Environmental
Studies, Nagoya
University
YOSHINO
Senior Researcher
Hirosato

Author

UMINO Hitoshi

Category

Volume17, No.2, Issue No.65, July 2022

26

23

23

Editor's Note

Comments from internship students

New functions for a quick search for ICHARM newsletter articles

22

Contents
ICHARM Open Day 2022 held for local school students

Page

ANNEX 358

AuthorPosition

59

Training &Education

MIYAZAKI
Ryosuke
MohamedRasmy Abdul
Master's
students
EGASHIRA
Shinji
NikolaZlatanović
16

Master's students

30

29

15

Senior Researcher

Research andTraining Advisor
Ph.D student,
Faculty of Civil
Engineering,
the University ofBelgrade

13

Action Reports from ICHARM Graduates : Nikola Zlatanović

A group from MJIIT visits ICHARM

Outline of the Master’s thesis and comment for the course by each student

Graduation Ceremony of the 15th ICHARM master’s program<Introduction of ICHARM research projects>
Unveiling rivers in the Peruvian Andes
Educational program updates

7

10World Bank project “Capacity Building for Drought Monitoring and Planning inPakistan under Present and Future Climates”

6

ICHARM joins advanced studies of climate change prediction

Research trip to Argentine for a SATREPS project

5

10

ICHARM hosted the AWCI Session prior to the 15th AOGEO Symposium

4

The second e-learning courses of HyDEPP-SATREPSStrengthening international networks: Signature of Memorandum of Understanding
between ICHARM and UMSS

3

8

Revised ICHARM Programme

1

Contents
Autonomous, decentralized and coordinated society

Page

Chief Staf

Message from KOIKE Toshio
Executive
Executive Director
Director
KURIBAYASHI Chief Researcher
DaisukeSpecialKattia Rubi
Research
TopicsARNEZ FERREL Specialist
HARADA
Research
DaisukeSpecialist
International Flood MIYAMOTO
Senior Researcher
Initiative (IFI)
MamoruUSHIYAMA
Senior Researcher
TomokiTSUTSUI
Research
HiroyukiSpecialist
Shrestha Badri Research
BhaktaSpecialist
Research
NAGUMO Naoko ResearchSpecialist
KURIBAYASHI Chief Researcher
Daisuke
NAITO Kensuke Researcher

Category

Volume17, No.3, Issue No.66, October 2022

ANNEX 3

KURIBAYASHI
DaisukeInternshipstudents
MORI Noriyuki

Coming Events

Editor's Note

Miscellaneous

AuthorMORI Noriyuki

Category

Information
Networking

Internshipstudents
Director forSpecial Research

Director forSpecial Research
Chief Researcher

Position

Volume17, No.3, Issue No.66, October 2022

36

34

32

31

Page

Contents

Editor's Note

Comments from internship students

Information on the 9th International Conference on Flood Management (ICFM9)

ICHARM co-organized a session at the Stockholm World Water Week 2022

ANNEX 360

61

Information
Networking

Training &Education

Research

KAKINUMA Daiki
KURIBAYASHI
Daisuke

Norain Binti
Osman

Senior Civil
Engineer, Malaysia
Public Work
Department, PWD(Jabatan Kerja
Raya Malaysia)
Researcher
Chief Researcher

Abdul Wahid
Senior Researcher
Mohamed RASMYMIYAZAKI
Chief Staff
RyosukeJayasekara
Doctoral course
Sachintha
students
Hote Hassan
Doctoral course
Harenstudents
Tuladhar Subash Doctoral course
students
Rahman Md
Doctoral course
Shahinur
students
Master's program Master's program
students
students

Research
AssistantSenior Researcher

Ballaran, Vicente
Jr. G.
OHARA Miho

Position

Executive
Director
Chief Researcher

Researcher
Senior Researcher

AuthorMessage from
KOIKE Toshio
Executive Director
KURIBAYASHI
SpecialDaisuke
TopicsNAITO Kensuke
OHARA Miho

Category

Volume17, No.4, Issue No.67, January 2023

Comments from new doctoral course students
Comments from new doctoral course students

13
14

19

18

17

Hands-on training on RRI in JICA short-term training
The 69th ICHARM R&D Seminar

Action Reports from ICHARM Graduates: Norain Binti Osman

Comments from new master's program students

Comments from new doctoral course students

13

14

Comments from new doctoral course students

Training on Emergency Response for Local Government Officers by using“Collection of Critical Situations during Flood Emergency Response”
Developing a system for the integrated management of water resources anddisasters in poorly gauged basins
Educational program updates

13

11

9

8

7

6

Executive Director received the AGU Ambassador AwardHyDEPP-SATREPS Philippines Project Activity Report: The 3rd Joint
Coordinating Committee in Manila and Training in JapanUPLB’s IdSCW First International Conference on Interdisciplinary Water Studies

35

The 9th International Conference on Flood Management (ICFM9)

1

Contents
Snowy regions are 'lightful' and wet air masses are lighter

Page

ANNEX 3

AuthorPosition

23

Exchange
Researcher
the University ofTokyo,
National
University ofCordoba,Nagoya University

Chief Researcher

NUMATA Shingo

ITSUMI Yuta
Sebastian Lopez
Chamal Perera

KURIBAYASHI
DaisukeField Survey

Miscellaneous

Editor's Note

27

24

22

Public Relations

21

19

Page

Director forSpecial Research
SHINYA Takafumi Chief Researcher

Senior Researcher
20

MIYAMOTO
MamoruMIYAMOTO
MamoruMORI Noriyuki

Senior Researcher

Information
Networking

Category

Volume17, No.4, Issue No.67, January 2023
Contents

Editor's note

Comments from internship students

A field survey in Thailand

Participation in the stakeholder consultation meeting and preparatory meeting of
UN 2023 Water Conference
ICHARM welcomed young visitors from Miyagi Prefecture Tagajo High School

The 11th Annual Meeting of Working Group on Hydrology, ESCAP/WMO Typhoon
Committee
The 1st face-to-face meeting of WMO RA II Coordination Panel for Hydrology

ANNEX 362

63

Follow-up seminar for ICHARM graduates

13

Editor's Note

Information
Networking

Land
Drainage Authority,
Government of Mauritius

Educational program updates

11

NAITO Kensuke

25

Malaysia-Japan
International Institute ofTechnology,
Universiti Teknologi
Malaysia

29

23
24

Research Specialist
Chief Staff

Researcher

21

Editor's Note

Field surveys in the lower Stung Sen River in Cambodia
Annual Hanami lunch
Comments from internship students： Livia Lahat

Public symposium “Can you survive unexpected floods?”

ICHARM delivers flood workshops for local schools

20

19

17
18

Comment from a student: My field trip experience to Tsurumi River Basin center,
Japan Meteorological Agency, and Arakawa Museum of Aqua
The 55th Annual Session of the Typhoon Committee
UN General Assembly President visits ICHARM to discuss water issues
Comments from participating doctoral course students

Action Reports from ICHARM Graduates： Kowlesser Akshay Prakash

16

14

9

Chief Researcher

students
Researcher
Deputy Director
Doctoral course
students
Chief Researcher

Ballaran, Vicente Jr. G. Doctoral course

Director, River
Department, National
Institute for Land andInfrastructureManagement(Former ICHARM
Deputy Director)
MIYAZAKI Ryosuke Chief Staff
Jayasekara
Doctoral course
Sachintha
students
HARADA Daisuke
Research Specialist
Kowlesser Akshay Land Drainage Officer(Civil Engineering) at the
Prakash

MATSUKI Hirotada

8Participation in a World Bank workshop in Kerala, India
HyDEPP-SATREPS Philippines Project: Participation in ICFM9 and the World BOSAI
Forum 2023
【Introduction of ICHARM research projects】
Disaster risk reduction cycle by dual governance (Local independence andinterdependence)

7

ICFM9 held in Tsukuba and Tokyo, Japan

Senior Researcher
Senior Researcher

Contents

3

Building Process

Chief Researcher

1

Page

KURIBAYASHI
Daisuke
YOSHINO Hirosato
OHARA Miho

Position

Executive Director

Author

KOIKE Toshio

KAKINUMA Daiki
MORI Noriyuki
Tedla Mihretab
Gebretsadik
KURIBAYASHI
DaisukePublic Relations
KURIBAYASHI
DaisukeField Survey NAGUMO Naoko
MIYAZAKI Ryosuke
Livia Lahat
Miscellaneous

Training &Education

Research

Special Topics

Message from
Executive

Category

Volume18, No.1, Issue No.68, April 2023

ANNEX 3

ANNEX 4

Major updates on ICHARM Website
Apr.

25

ICHARM Open Day 2022 on Zoom Online discussion with Takezono High School
and Namiki Secondary School

28 ICHARM’s contribution to the 4th Asia-Pacific Water Summit
28 ICHARM Newsletter Volume 17 No.1 (Issue No.64) is now available
28 Message from Executive Director updated.
May

12 ICHARM held the 68th R&D SeminarJun.

22 Malawian Ambassador to Japan visited ICHARM
28

Jul.

6th ICHARM Governing Board meeting was held

29 ICHARM Newsletter Volume 17 No.2 (Issue No.65) is now available
29 Message from Executive Director updated.

Sep.

14 MJIIT visited ICHARM

Oct.

3

ICHARM hosted the AWCI Session prior to the 15th AOGEO Symposium

24 Accepting applicants for Ph.D. Disaster Management Program 2023
31 ICHARM Newsletter Volume 17 No.3 (Issue No.66) is now available
31 Message from Executive Director updated.
Dec.

27 Executive Director received the AGU Ambassador AwardJan.

31 ICHARM Newsletter Volume 17 No.4 (Issue No.67) is now available
31 Message from Executive Director updated.

Feb.

14 ICHARM Brochure is updated.

Mar.

1
16

UN General Assembly President visits ICHARM to discuss water issues
The report on the 9th International Conference on Flood management (ICFM9)
is updated

64

ANNEX 5
ICHARM Publication List (April 2022 ~ March 2023)
A. Peer Reviewed Papers

南雲直子、大原美保、藤兼雅和、井上卓也、平松裕基、ジャラニラ サンチェズ パトリ
シアアン、フィリピン共和国の洪水常襲地を対象とした3D浸水ハザードマップの作成と技術の普及、E-journal GEO、2022，Vol.17、No.1、pp.123-136


Li Zhou, Toshio Koike, Kuniyoshi Takeuchi, Mohamed Rasmy, and Katsuhiro Onuma, A study on
availability of ground observations and its impacts on bias correction of satellite precipitation
products and hydrologic simulation efficiency, Journal of Hydrology, July 2022, Vol.610, pp.1-20



NAGUMO Naoko and EGASHIRA Shinji, Multi-decadal Landform Evolution in the SittaungRiver Estuary, Myanmar、地学雑誌、東京地学協会、Vol.131、pp.427-445、2022年8月25日



HARADA Daisuke, EGASHIRA Shinji, Tanjir Saif Ahmed and ITO Hiroyuki, Entrainment of bed
sediment composed of very fine material、Earth Surface Process and Landforms (ESPL)、Vol.47,
Issue13, pp.3051-3061, October 2022

Daiki Kakinuma, Mamoru Miyamoto, Yosuke Nakamura, Anurak Sriariyawat and Supattra
Visessri, Development of an Inundation Model for Creating Industrial Park-Scale Risk Information
for Area-BCM, Journal of Disaster Research (JDR), Vol.17, Issue6, pp.877-888, October 1, 2022

Tedla, Mihretab G., Mohamed Rasmy, Katsunori Tamakawa, Hemakanth Selvarajah and Toshio
Koike, Assessment of Climate Change Impacts for Balancing Transboundary Water Resources
Development in the Blue Nile Basin, Sustainability, Vol.14, No.22, November 2022, 15438.
https://doi.org/10.3390/su142215438



沼田慎吾、柿沼太貴、望月貴文、久保田啓二朗、小池俊雄、池内幸司、125河川の水位予測システムを構築する中で生じた問題に関する考察、第67回水工学講演会、土木学会論文集B1（水工学）、土木学会、Vol.28、No.2、pp.I_397-I_402、2022年11月24日



柿沼太貴、沼田慎吾、望月貴文、久保田啓二朗、中村要介、小池俊雄、池内幸司、降雨流
出応答特性を考慮した洪水予測のための粒子フィルタ適用手法の検討、第67回水工学講
演会、土木学会論文集B1（水工学）、土木学会、Vol.28、No.2、pp.I_403-I_408、2022年11月24日



筒井浩行、Mohamed Rasmy、小池俊雄、渇水によるパナマ運河水位低下の緩和対策に関する基礎研究、第67回水工学講演会、土木学会論文集B1（水工学）、Vol.78、No.2、pp.I_745-I_750、2022年11月25日



Kattia Rubi Arnez Ferrel、HARADA Daiisuke and EGASHIRA Shinji、Effect of suspended
sediment on bed evolution in a meandering river of the Bolivian Amazon、第67回水工学講演会、土木学会論文集B1（水工学）、土木学会、Vol.78、No.2、pp.I_883-I_888、2022年11月23日



会田健太郎、大原美保、南雲直子、Patricia Ann JARANILLA-SANCHEZ、久保田啓二朗、
新屋孝文、フィリピン共和国の2020年台風Ulysses災害を事例にした早期被災者把握における衛星活用の課題検討、第67回水工学講演会、土木学会論文集B1（水工学）、土木学

65

ANNEX 5
会、Vol.78、No.2、pp.I_985-I_990、2022年11月25日


原田大輔、江頭進治、豪雨時の浮遊砂の流出と河床変動に伴う洪水氾濫－白川のヨナ

洪水を例に－、第67回水工学講演会、土木学会論文集B1（水工学）、土木学会、Vol.78、
No.2、pp.I_1093-I_1098、2022年11月23日


Md Majadur Rahman, EGASHIRA Shinji and HARADA Daisuke, BASIN SCALE SEDIMENTTRANSPORT PROCESSES USING RAINFALL SEDIMENT RUNOFF MODEL - A CASESTUDY OF SANGU RIVER BASIN、第67回水工学講演会、土木学会論文集B1（水工学）、
土木学会、pp.I_1099-I_1104、2022年11月23日



大原美保、南雲直子、新屋孝文、平成30年7月豪雨災害での被災事業所の営業再開・生産活動の回復状況の分析、第67回水工学講演会、土木学会論文集B1（水工学）、Vol.78、No.2、
pp.I_37-I_42、2022年



モハメッド

ラスミー

アブドゥル

ワヒド, 安川雅紀, 牛山朋來, 玉川勝徳, 会田健太郎, S. Seenipellageka, S. Hemakanth, 喜連川優, Integration of MultiPlatform Data for Developing
an Integrat-ed Flood Information System in the Kalu River Basin, Sri Lanka, Water, MDPI,
February 6, 2023


池田鉄哉、水災害分野における研究・研修・ネットワークの三位一体的運用による相乗効
果と今後の活動展開の方向性についての考察、水文・水資源学会誌、水文・水資源学会、
Vol.36、No.1、pp.63-73、2023年2月

B: Non-peer Reviewed Paper

野澤千絵、上田聖也、柿沼太貴、最大想定規模の浸水想定区域における土地利用規制別の人口推移と居住誘導に関する研究－RRIモデルによる農地の宅地化に伴う貯留機能低下の影響分析を通じて－、都市計画報告集、日本都市計画学会、(公社)日本都市計画学会、
Vol.21、No.4、pp.452-459、2023年3月1日

C: Oral Presentation
Badri Bhakta Shrestha, Mohamed Rasmy, Takatoshi Kawamoto, and Masakazu Fujikane,
Quantitative assessment of flood damage to residential buildings and agricultural crops in the SoloRiver basin of Indonesia, Proceedings of the 9th International Conference on Water Resources andEnvironment Research (ICWRER 2022), pp.264-269, The 9th International Conference on Water
Resources and Environment Research (ICWRER 2022), ICWRER (Online), April 25-27, 2022



Shammi Haque, Koji Ikeuchi, Badri Bhakta Shrestha, and Masashi Minamide, Generalizing flood
damage mechanism processes of MC Type houses by developing comprehensive flood damage
estimation method for Teesta River Basin, Bangladesh, Proceedings of the EGU General Assembly
2022, EGU General Assembly 2022 (Online), EGU, Vienna, Austria, May 23-27, 2022

Daisuke Harada and Shinji Egashira, Methods to evaluate sediment and driftwood laden flood -In
the Akatani river flood disaster in July 2017-, Proceedings of the 39th IAHR World Congress, 39th
IAHR World Congress 2022, Spain Water and IWHR, China, Granada, Spain, June 19-24, 2022

66

ANNEX 5

Shinji Egashira, Robin Biswas, Daisuke Harada, and Kuniaki Miyamoto, On a reasonable,
functional form for bed-load formulas, Proceedings of the 39th IAHR World Congress, 39th IAHR
World Congress 2022, Spain Water and IWHR, China, Granada, Spain, June 19-24, 2022

遠藤彩夏、木村美瑛子、中尾 毅、大原美保、藤兼雅和、地方自治体での水害対応ヒヤリ・ハ
ット事例の発生傾向に関する分析、土木学会全国大会第 77 回年次学術講演会、土木学会、
2022 年 9 月 16 日



南雲直子、傳田正利、原田大輔、小池俊雄、江頭進治、新屋孝文、洪水被害軽減に向けた仮想
避難体験プログラム提供の試み、日本地理学会 2022 年秋季学術大会、日本地理学会、2022 年
09 月 24 日



NAGUMO Naoko and EGASHIRA Shinji, Effect of water level variation on the channel width in theriver mouth、10th IAG International Conference on Geomorphology、International Association of
Geomorphologists, September 13, 2022

須貝俊彦、山野博哉、南雲直子、長谷川直子、自然地理教育の実践から明らかになった課題とそれをふまえた環境防災教育の展望、日本地理学会 2022 年秋季学術大会、日本地理学会、
2022 年 09 月 24 日

筒井浩行、澤田洋平、小池俊雄、AMSR を用いた陸面データ同化手法の営農支援への応用、日本気象学会 2022 年度秋季大会、日本気象学会、2022 年 10 月 24 日



NAGUMO Naoko 、 Effect of water level fluctuation on the sediment transport and landform
development in the river mouth、日本地形学連合 2022 年秋季大会、日本地形学連合、2022 年 11月5日

TSUTSUI Hiroyuki, KUBOTA Keijiro, and KOIKE Toshio, Acquisition of the AMSR2 snow depth
validation data and study on the estimation of snowpack on ice surface, The Joint PI Meeting of JAXA
Earth Observation Missions FY2022, JAXA, November 7, 2022



AIDA Kentaro, Abdul Wahid Mohamed RASMY, TAMAKAWA Katsunori, KUBOTA Keijiro,
MATSUKI Hirotada and KOIKE Toshio, Research plan for “Highfrequency and high-spatial-resolution
soil moisture monitoring using SAR and microwave radiometer and application research to hydrologicalmodels”, The Joint PI Meeting of JAXA Earth Observation Missions FY2022, JAXA, November 7,2022



Kattia Rubí ARNEZ FERREL, HARADA Daisuke, and EGASHIRA Shinji, LATERAL SORTING IN
A SUSPENDED SEDIMENT DOMINATED MEANDERING RIVER, ANALES del XXX Congreso
Latinoamericano de Hidráulica, XXX Congreso Latinoamericano de Hidráulica, IAHR, Vol.3, pp.303304

Abdulla Bava, Mohamed Rasmy, Hemakanth Selvarajah, and Toshio Koike, Flood modelling andcalibration of a recent flood event in Bharathapuzha river basin, Kerala, India, The 9th International
Conference on Flood Management (ICFM9), February 18-22, 2023

Akshay Kowlesser, Toshio Koike, and Mohamed Rasmy, A study on an integrated water resourcesmanagement plan under climate change for Grand River North West River basin, Mauritius, The 9thInternational Conference on Flood Management (ICFM9), February 18-22, 2023

67

ANNEX 5Daiki Kakinuma, Shingo Numata, Takafumi Mochizuki, Keijiro Kubota, and Yosuke Nakamura, A
Particle-filter application method for real-time flash flood prediction system for small and mediumsized rivers, The 9th International Conference on Flood Management (ICFM9), February 18-22, 2023

Daisuke Harada, Shinji Egashira, and Katsuhiro Onuma, Methods to create hazard maps for flood
disasters with sediment and driftwood, The 9th International Conference on Flood Management(ICFM9), February 18-22, 2023



Eugene C. Herrera and Kensuke Naito, Hydrodynamic Investigation of Laguna Lake, Philippines for
Water Security and Flood Risk Management of Metro Manila, The 9th International Conference on
Flood Management (ICFM9), February 18-22, 2023

FAUZIANA AHMAD, Kosei Yamaguchi, Eiichi Nakakita, and Tomoki Ushiyama, Investigation ofTransition Signals from Single Cell to Multicell Thunderstorms in the Kinki Region, Japan using
Vertical Vorticity and Multi-Parameter Radar Analysis, The 9th International Conference on FloodManagement (ICFM9), February 18-22, 2023



Fernando C. Sanchez Jr., Patricia Ann J. Sanchez, Catherine B. Gigantone, Jessa O. Aquino, Abdul
Wahid Mohamed Rasmy, and Ralph Allen Acierto, Water Assessments in Watersheds of Laguna
Philippines, The 9th International Conference on Flood Management (ICFM9), February 18-22, 2023



Jonathan S. Serrano, Eugene C. Herrera, and Kensuke Naito, Hydraulic Analysis of the Marikina River
Floodplain During Typhoon Vamco using Numerical Modelling, The 9th International Conference on
Flood Management (ICFM9), February 18-22, 2023



Karina Vink, Ahmad Ali Gul, and Mamoru Miyamoto, Implementing climate change adaptation andenergy transition policies simultaneously through urban green infrastructure, The 9th International
Conference on Flood Management (ICFM9), February 18-22, 2023



Katsunori TAMAKAWA, Shigeru Nakamura, Cho Thanda Nyunt, Tomoki Ushiyama, and Mohamed
Rasmy, Investigation of ensemble reservoir inflow prediction system in Sai River, Japan, The 9thInternational Conference on Flood Management (ICFM9), February 18-22, 2023



Kattia Rubí Arnez Ferrel, Harada Daisuke, and Egashira Shinji, Influence of suspended sediment on thegeomorphology of meandering rivers, The 9th International Conference on Flood Management (ICFM9),
February 18-22, 2023

Kensuke Naito, Daiki Kakinuma, Mamoru Miyamoto, Mohamed Rasmy, and Anthony C. Sales,
Assessment of future flood risk using water and energy budget-rainfall runoff inundation (WEB-RRI)
model: case study for the Davao River in the Philippines, The 9th International Conference on FloodManagement (ICFM9), February 18-22, 2023



Kentaro AIDA, Miho OHARA, and Naoko NAGUMO, Patricia Ann J. Sanchez, Efforts to visualize thespatial damage distribution of typhoon disasters in the Philippines using Google Earth Engine, The 9thInternational Conference on Flood Management (ICFM9), February 18-22, 2023



Leandro Galvanese Kuhlmann, Mamoru Miyamoto, Julio Cesar Lana, and Tiago Antonelli, Building
disaster prevention capacity in a continental scale country: The trajectory and experience of theGeological Survey of Brazil, The 9th International Conference on Flood Management (ICFM9),68

ANNEX 5
February 18-22, 2023


Masatoshi Denda and Masakazu Fujikane, Development of a virtual flood experience system and its
possibility as a flood risk communication tool, The 9th International Conference on Flood Management(ICFM9), February 18-22, 2023



Masheswaran Myuran, Toshio Koike, Mohamad Rasmy, and Mamoru Miyamoto, Developing a river
basin disaster resilience and sustainable plan for Malwathu Oya river in Sri Lanka, The 9th International
Conference on Flood Management (ICFM9), February 18-22, 2023



Md. Majadur Rahman, Daisuke Harada, and Shinji Egashira, Sediment transport processes in the Sangu
river basin using rainfall sediment runoff model for sustainable river management, The 9th International
Conference on Flood Management (ICFM9), February 18-22, 2023

Mesake Mataitoga, Miho Ohara, Wojciech Dabrowka, Shinya Abe, and Meiapo Faasau, Proactive
Approaches to Disaster Risk Management (DRM) for HydroMeteorological Hazards in Fiji, The 9thInternational Conference on Flood Management (ICFM9), February 18-22, 2023

Miho OHARA, Naoko NAGUMO, Kensuke NAITO, Masaki YASUKAWA, and Patricia Ann J.
Sanchez, e-Learning for Capacity Building on Flood Simulation and Risk Assessment Technology, The
9th International Conference on Flood Management (ICFM9), February 18-22, 2023



Mihretab G. Tedla, Mohamed Rasmy, Toshio Koike, and Li Zhou, Evaluation of Satellite Precipitation
Products (SPPs) for Real-time Extreme River Flow Modeling in the Blue Nile Basin, The 9thInternational Conference on Flood Management (ICFM9), February 18-22, 2023

Mohamed Rasmy, Katsunori Tamakawa, Maksym Gusyev, Miho Ohara, and Katsuhiro Onuma,
Developing a Flood Monitoring System by Utilizing Real-Time Satellite Rainfall Estimates and Water
Energy Budget-Based Rainfall-Runoff Inundation Model in West Africa, The 9th International
Conference on Flood Management (ICFM9), February 18-22, 2023

Mohamed Zuhail and Mohamad Rasmy, Development of Integrated Water Resources Management Planfor Gal Oya River Basin in Sri Lanka, The 9th International Conference on Flood Management (ICFM9),
February 18-22, 2023

Mohammad Hossain Mahtab, Miho Ohara, and Mohamed Rasmy, Assessment of Effectiveness ofSubmersible Embankment Considering Rainfall Variations in Haor Area in Bangladesh, The 9thInternational Conference on Flood Management (ICFM9), February 18-22, 2023



Muhammad Masood and Mohamad Rasmy, Necessary storage for managing early flash-flood to savecrops in the north-eastern region of Bangladesh, The 9th International Conference on FloodManagement (ICFM9), February 18-22, 2023



Naoko NAGUMO, Kentaro AIDA, Miho OHARA, and Vicente G. Ballaran, Jr., Classification ofcommunities based on landforms and flood history in Candaba Swamp, The 9th International
Conference on Flood Management (ICFM9), February 18-22, 2023



Nikola Zlatanovic and MIYAMOTO Mamoru, An integrated design discharge calculation system forsmall to mid-sized ungauged catchments in Serbia, The 9th International Conference on FloodManagement (ICFM9), February 18-22, 2023

69

ANNEX 5


Patricia Ann J. Sanchez, Allan T. Tejada, Jr., Renz Kevin R. Ilagan, Jessa O. Aquino, Catherine B.
Gigantone, Myra E. David, Roger A. Luyun, Jr., and Mamoru Miyamoto, Flood Management in Angat
Watershed, The 9th International Conference on Flood Management (ICFM9), February 18-22, 2023

Rafael Silva Araújo, Miho Ohara, Mamoru Miyamoto, and Kuniyoshi Takeuchi, SPATIAL ANALYSISOF DISADVANTAGED POPULATION EXPOSED TO FLOODS IN THE ITAPOCU RIVER BASIN,
BRAZIL, The 9th International Conference on Flood Management (ICFM9), February 18-22, 2023

Ralph Allen E. Acierto, Tomoki Ushiyama, and Toshio Koike, Attributing weather patterns to Davao
River extreme rainfall from Reanalysis and GCM, The 9th International Conference on FloodManagement (ICFM9), February 18-22, 2023

Ravindra V. Kale, Toshio Koike, Katsunori Tamakawa, Manmohan K. Goel, and Yoshihiro Shibuo,
Integrated WEB-DHM and RRI based modelling framework to assess the role of dam operation on flood
disaster risk reduction in Brahmani-Baitarani delta, The 9th International Conference on FloodManagement (ICFM9), February 18-22, 2023

Robin Kumar Biswas, Egashira Shinji, and Daisuke Harada, Application of Entrainment Velocity
Concept for Evaluation of River Morphology: A Numerical Model Study, The 9th International
Conference on Flood Management (ICFM9), February 18-22, 2023



Roshan Indika Jayasinghe and Mohamad Rasmy, SIGNIFICANCE OF HAVING INTEGRATEDWATER RESOURCE PLAN IN A COMPLEX WATERSHED SYSTEM FOR BETTER WATERMANAGEMENT DURING COVID PANDEMIC: THE CASE OF MAHAWELI RIVER BASIN, The
9th International Conference on Flood Management (ICFM9), February 18-22, 2023



Seenipellage Chaminda Sugeeswara, Mohamed Rasmy, Tomoki Ushiyama, Masaki YASUKAWA, andToshio Koike, A Platform on Water Resilience and Disasters in Sri Lanka, The 9th International
Conference on Flood Management (ICFM9), February 18-22, 2023



Shrestha Badri Bhakta, Abdul Wahid Mohamed RASMY, Tomoki Ushiyama, Ralph Allen ACIERTO,
Takatoshi Kawamoto, Masakazu Fujikane, Hiroyuki Ito, and Takafumi Shinya, Assessment of flood
damage to agricultural crops under climate change scenarios using MRI-AGCM outputs in the SoloRiver basin of Indonesia, The 9th International Conference on Flood Management (ICFM9), February
18-22, 2023

Tanjir Saif AHMED, Zia UDDIN, Shinji EGASHIRA, and Daisuke HARADA, Shoreline erosion andits countermeasure along west coast of Teknaf peninsula, Bangladesh, The 9th International Conferenceon Flood Management (ICFM9), February 18-22, 2023

Thanura Lasantha Guruge, Bandara Palugaswewa, and Egashira Shinji, Controlling Sedimentation
through Regulating the River by Thalpitigala Reservoir Project, The 9th International Conference on
Flood Management (ICFM9), February 18-22, 2023

Tsuyoshi Koyabu and Masatoshi Denda, A Study on Improving Disaster Mitigation Awareness by
Simulated Flood Experience Using VR Videos, The 9th International Conference on Flood Management(ICFM9), February 18-22, 2023



海野 仁、牛山朋來、Abdul Wahid Mohamed RASMY、気候モデルを用いたインドネシア国ソロ

70

ANNEX 5川流域の利水影響予測、土木学会関東支部第 50 回技術研究発表会、土木学会、2023 年 3 月 8日～2023 年 3 月 9 日
Shrestha Badri Bhakta, Abdul Wahid Mohamed RASMY, and SHINYA Takafumi, Quantitative
Evaluation of Reduction of Flood Damage to Residential Households by Adaptation Options in the
Bengawan Solo River Basin of Indonesia, 6th Global Summit of GADRI, Kyoto University, March 1517, 2023

D: Poster Presentation
Badri Bhakta Shrestha, Mohamed Rasmy, Takatoshi Kawamoto, and Masakazu Fujikane, Exposure
analysis and assessing households flood damage with adaptation options in the Solo River basin ofIndonesia, Proceedings of the Japan Geoscience Union Meeting 2022, Japan Geoscience Union
Meeting 2022 (Online), JPGU, May 22-June 3, 2022

Menglu Qin, Daisuke Harada, and Shinji Egashira, Modeling of Sediment Transport Process inDrainage Basins, Proceedings of the 39th IAHR World Congress, 39th IAHR World Congress 2022,
Spain Water and IWHR, China, Granada, Spain, June 19-24, 2022



原田大輔、江頭進治、多量の土砂・流木を含む洪水流の解析法、河川技術論文集、2022 年
6 月、28 号、pp.289-295、河川技術に関するシンポジウム（オンライン）、水工学委員会
河川部会、土木学会、2022 年 6 月 16 日～17 日



南雲直子、内藤健介、江頭進治、秦 梦露、原田大輔、萬矢敦啓、安平川人工水路における浮遊砂による地形形成、2023 年日本地理学会春季学術大会、日本地理学会、2023 年 3月 25 日～27 日

E: PWRI Publication

MIYAZAKI Ryosuke、Report on 2018-2019 M.Sc. Program, “Water-related Disaster Management
Course of Disaster Management Policy Program”、第4420号、土木研究所資料、2022年7月1日

F: Magazine, Article


南雲直子、マニラ首都圏周辺の持続可能な発展に向けた調査研究、GIS NEXT、No.79、
pp.51、2022 年 4 月



大原美保、アジアにおける水災害リスク評価に基づく流域治水の支援活動―HyDEPP-SATREPS フィリピンプロジェクト―、土木学会誌、流域治水特集号、Vol.107、No.6、pp.2831、2022 年 6 月


大原美保、新屋孝文、研究コラム

フィリピン共和国との国際共同プロジェクト：

HyDEPP-SATREPS、土木技術資料、Vol.64、No.7、pp.49、2022 年 7 月


松木洋忠、研究と研修と交流による国際貢献、土木技術資料、pp.6-7、2022 年 10 月号



玉川勝徳、Abdul Wahid Mohamed RASMY、久保田啓二朗、小池俊雄、気候レジリエンスと持続可能性の支援にむけた水文モデル開発戦略、土木技術資 料、pp.8-11、2022 年 10
月号

71

ANNEX 5

傳田正利、新屋孝文、原田大輔、小池俊雄、熊本市における仮想洪水体験システムの普及に関する試み、土木技術資料、pp.12-15、2022 年 10 月号



藤兼雅和、宮崎了輔、水災害分野の人材育成 ～ICHARM における研修活動を通じて～、
土木技術資料、pp.16-19、2022 年 10 月号



栗林大輔、森 範行、水の国際ネットワーキングと ICHARM による国際貢献、土木技術
資料、pp.20-23、2022 年 10 月号



小池俊雄、流域全体ですべての関係当事者による質の高い社会づくり、土木技術資料、
pp.5、2022 年 12 月号



柿沼太貴、沼田慎吾、望月貴文、久保田啓二朗、中小河川を対象としたリアルタイム水位予測の開発と課題、土木技術資料、pp.20-23、2022 年 12 月号



傳田正利、栗林大輔、新屋孝文、市町村防災情報システムの改良と適用、土木技術資料、
pp.44-47、2023 年 1 月号



傳田正利、水災害時の早期避難の実現に向けて、建設マネジメント技術、(一財)経済調査
会、3 月号、2023 年 3 月 15 日

G: Others

南雲直子、水害地形分類図、日本地理学会 (編)「地理学事典」、丸善出版、pp.540-541、2023年1月

72