International Symposium on Flash Floods
in Wadi Systems
Disaster Risk Reduction and Water Harvesting in the Arab Region

14th – 15th of October 2015
Obaku Plaza, Kyoto University, Gokasho, Uji, Kyoto, Japan

Supported by:
Global Alliance of Disaster Research Institutes (GADRI)&Water Resources Research Center
Disaster Prevention Research InstituteKyoto University

Symposium Statement
The second Global Summit of Research Institutes for Disaster Risk Reduction inMarch 2015 has strongly recommended development of a research road map for the next
decade. Based on an agreement of all participants, Global Alliance of Disaster ResearchInstitutes (GADRI) has been established. Through the discussion, the atmospheric andwater related disaster and integrated disaster risk management groups agreed toestablish a network of international research groups to investigate flash floods disasters,and implement new research methodologies, and emphasizing transdisciplinary
approaches. The first international symposium on flash floods in Wadi system focus on
the Disaster Risk Reduction (DRR) by discussing current mitigation measures forprotection against flash floods in arid and semi-arid regions, and consequent wise use offloodwater (water harvesting) in Wadi systems.
The topic of integrated flash flood management is discussed on several fronts: flood
protection, hydrological modelling, water harvesting, social implications, future
development of Wadi’s, integrated risk management, sedimentation in reservoirs, water
resources management and dam constructions. Global Alliance of Disaster ResearchInstitutes (GADRI) aims at strengthening collaboration and exchanging in research withother international institutes and researchers. Flash flood problems in arid and semi-arid
regions can be listed up one of target issues for such collaboration. It is hoped that
introducing Japanese technologies provide an innovative way in integrated flash flood
protection and harvesting.
There are twenty-two Arab countries with a total population of 420 million. The Arabregion is located in arid and semi-arid zones. The climate is characterized by hot dry
summers, moderate winters, and very little rainfall. Rapid increase of population andurbanization has pushed people to high disaster risk zones such as on unstable hills andWadi’s flood plain located in Saudi Arabia, Egypt and Yemen. In these countries
overlooking the red sea, the climate change has a great impact on the frequency andintensity of extreme weather events. High variations of rainfall with an increase in flood
events affect the Arab region. Recently, severe flash floods hit several mountainous inthe Wadi’s plain leaving more than 100 people in fatality.
In January 2010, and February and April 2011 several areas within the Wadi’s
plains in Egypt including Aswan, Luxor, Assiut, and Sinai Peninsula were impacted byII

flash flood. Records of severe flash floods from 2008 to 2009 in Saudi Arabia and Yemen
indicated an estimated total damage of approximately 1.3 billion USD (UNISDR-ROAS,March 2013). Continued heavy rains and consequent flash floods from early August 2013
across Sudan caused extensive damage and loss of life in fifteen states, with Khartoum,Gezira, Blue Nile, River Nile, White Nile and Northern state being the most affected. The
Government estimates that 114,000 households have been affected with at least 110
people injured and 14 people killed. A total of 40,000 houses have been completely
destroyed, displacing a large part of the affected population.
Egypt is fairly unique in the distribution of its population, land-use and agriculture,and economic activity which makes it extremely vulnerable to any potential impacts on
its water resources and coastal zones. Despite being a large squarely shaped country
with an area of about a million square kilometer, its lifeline is constrained along a narrow
T-shaped strip of land (which constitutes less than 5% of its total land area). This isextends along the Nile River and the northern coast around the Nile delta. However, thecombination of population growth, economic development and climate change pose toreduce the available water per capita in the region and shift the dynamics of power in thebasin. The technical program consists of the following seven sessions. The final closing
discussion will discuss the road map for future collaboration within the scope of theproposed project as one of important topics of GADRI network.

IIIThemes of the Symposium
1- Case Studies of Flash Flood Management
2- Wadi’s Future Developments Projects and Integrated Water Management
3- Hydrological Modelling and Climate Change Impacts
4- Flood Mitigation and Water Harvesting Strategies
5- Innovative Technologies
6- Integrated Risk Management I
7- Integrated Risk Management II
8- Summary and Closing Discussion

IVSpeakers
Japan: Prof. Dr. Kaoru Takara, Director, DPRI, Kyoto University
Japan: Prof. Dr. Hirokazu Tatano, DPRI, Kyoto University
Japan: Prof. Dr. Tetsuya Sumi, DPRI, Kyoto University
Japan: Prof. Dr. Ana Maria Cruz, DPRI, Kyoto University
Japan: Associate Prof. Dr. Muneta Yokomatsu, DPRI, Kyoto University
Japan: Associate Prof. Sameh Kantoush, DPRI, Kyoto University
Japan: Associate Prof. Dr. Koichi Unami, Graduate School of Agriculture, Kyoto
University
Japan: Dr. Subhajyoti Samaddar, DPRI, Kyoto University
Japan: Mr. Mohamed Abdelfatah, Ph.D. Student, DPRI, Kyoto University
Japan: Dr. Takuji Kubota, Japan Aerospace Exploration Agency (JAXA)
Japan: Mr. Yoichi Iwami, Chief Researcher, ICHARM
Japan: Mr. Hitoshi Yoshida, Japan Dam Engineering Center (JDEC)
Japan: MLIT Representative, MLIT
Egypt: Prof. Dr. Ahmad Wagdy, Vice Dean for Graduate Studies, Faculty ofEngineering, Cairo University
Egypt: Prof. Dr. Karima Attia, Director of Water Resources Research Institute, NationalWater Research Center (NWRC)
Egypt: Prof. Dr. Mohamed EL-Bastawesy, National Authority for Remote Sensing
Egypt: Dr. Mohamed Al-Aawah, Programme Specialist, UNESCO- Cairo.
Egypt: Associate Prof. Dr. Eman Hassan, Water Resources Research Institute,National Water Research Center (NWRC)
Jordan: Associate Prof. Dr. Osama Mohawesh, Guest Scholar, Kyoto University andWater Resources and Environmental Engineering, Mutah UniversityVSaudi Arabia: Associate Prof. Dr. Khalid A. Al-Ghamdi, Umm Al Qura University, Mecca
Sudan: Prof. Dr. Abdalla Abdelsalam Ahmed, Director General, UNESCO Chair.
Oman: Eng. Ahmed Al Barwani, Ministry of Regional Municipalities and Water
Resources
Oman: Dr. Saif Al Hinai, Water Management Systems, Special Economic Zone
Authority.
Europe: Associate Prof. Dr. Ir. Biswa Bhattacharya, UNESCO-IHE, Delft, TheNetherlands
Europe: Prof. Dr. Uwe Tröger, TUB, Berlin, Germany
Europe: Dr. Mohammad Meshkati Shahmirzadi, Antea Group, Antwerpen, Belgium
Europe: Associate Prof. Dr. Gabriele Landucci, University of Pisa, Italy
Europe: Dr. Junko Mochizuki, International Institute for Applied Systems Analysis(IIASA), Austria

VIProgram
First Day Program: 14th October (Wednesday), 2015 at KIHADA Hall
9:00-10:00 Registration
Opening Session: Chaired by: Prof. Shigenobu Tanaka (Kyoto University, Japan)

Time

Title of presentation

Presenter

10:00－10:05

Opening Remarks and Guest WelcomeDPRI Representative (DPRI, Kyoto
University, Japan)

10:15 – 10:10

Vision and Interest of MLIT for Flash
Floods Disaster in the Arab Region

Mr. Yusuke Amano (Ministry ofLand, Infrastructure, Transport andTourism (MLIT), Japan)

10:10 – 10:20

Urgent Capacity Development forManaging Natural Disaster Risks of Flash
Floods in Egypt, Jordan, Sudan andYemen

Dr. Mohamed Al-Aawah(UNESCO- Cairo, Egypt)

10:25 – 10:30

Symposium Program, Statement andGeneral Vision

Prof. Tetsuya Sumi (KyotoUniversity, Japan)

10:40 – 11:00

Coffee BreakSession 1: Case Studies of Flash Floods Management
Chaired by: Associate Prof. Sameh Kantoush (Kyoto University, Japan)
Note: Allocated time for Oral Presentations : 20 min. talk + 5 min. discussion

11:00 – 11:25

Flash Floods in Egypt: Strategies,Measures, and Harvesting

Prof. Karima Attia (National Water
Research Center, Egypt)

11:25 – 11:50

Flash Floods Mitigation and Harvesting
Case Study of Oman

Eng. Ahmed Said Al Barwani(Ministry of Regional Municipalities
and Water Resources, Oman)

11:50 – 12:15

Flash Floods in Arid and Semi-arid
Region: Overview of Sudan Experience

Prof. Abdalla Abdelsalam Ahmed(UNESCO Chair, Sudan)VII12:05 – 12:10

Greetings from DPRI Director

12:10 – 12:15

Group Photo at “KIHADA Hall”

12:15－13:15

Lunch

Prof. Kaoru Takara (Director, DPRI
Kyoto University, Japan)

Session 2: Wadi’s Future Developments Projects and Integrated Water Management
Chaired by: Prof. Tetsuya Sumi (Kyoto University, Japan)
Note: Allocated time for Oral Presentations : 20 min. talk + 5 min. discussion

13:15 – 13:40

Integrated Strategies for Management ofFlash Floods in the Arabian Wadi Basins

Associate Prof. Sameh Kanoush(Kyoto University, Japan)

13:40 – 14:05

Integrated Water Management Strategy inDuqm Area, Sultanate of Oman

Dr. Saif Alhinai (Special EconomicZone Authority at Duqm, Oman)

14:05 – 14:30

Tangible and Potential Risks of Flash
Floods in the Hashemite Kingdom ofJordan

Associate Prof. Osama Mohawesh(Mutah University, Jordan/ GuestScholar, Kyoto University)

14:30－14:50

Coffee Break

VIIISession 3: Flood Mitigation and Water Harvesting Techniques
Chaired by: Associate Prof. Kenji Tanaka (Kyoto University, Japan)
Note: Allocated time for Oral Presentations : 20 min. talk + 5 min. discussion

14:50 – 15:15

Developing Groundwater Resources in
Arid Lands: the Eastern Desert Project EDP

Prof. Ahmed Wagdy (CairoUniversity, Egypt)

15:15 – 15:40

Managing Groundwater Recharge andProf. Uwe Tröger (TUB, Germany)
Recovery, as Reuse Method: a Chance for
Egypt's Water Supply

15:40 – 16:05

Using Remote Sensing and GIS For
Estimating the Flash Flood Parameters forthe Dryland Catchments: Implication for
Water Resources Management

Associate Prof. Mohamed ELBastawesy (National Authority for
Remote Sensing and Space Sciences,Egypt)

16:05 – 16:30

Establishing a Saudi Arabia Land Data
Assimilation System for Proper Water
Resources Management

Associate Prof. Khalid A. AlGhamdi (Umm Al-Qura University,Kingdom of Saudi Arabia)

16:30– 16:50

Coffee BreakSession 4: Innovative Technologies
Chaired by: Associate Prof. Tetsuo Tobita (Kyoto University, Japan)
Note: Allocated time for Oral Presentations : 20 min. talk + 5 min. discussion

16:50 – 17:15

Feasibility Study on Application of
Trapezoidal CSG Dam for Flash Flood
Mitigation Measures

Mr. Hitoshi Yoshida (Japan Dam
Engineering Center, Japan)

17:15 – 17:40

A Case Study on Flood Forecasting
Applicable to Insufficient Observation
Areas

Mr. Yoichi Iwami (Public Works
Research Institute, Japan)

17:40 – 18:05

Operational Flash Flood Forecasting,Warning System and Management forSinai Peninsula, Egypt

Dr. Mohammad MeshkatiShahmirzadi (Antea Group,Belgium)

18:30 – 20:00 Dinner Reception (In the Hybrid Space - Second Floor of Obaku Plaza)
Associate Prof. Yasuhiro Takemon (Kyoto University, Japan)

IX

Second Day Program: 15th October (Thursday) 2015 at KIHADA Hall
8:30-9:00 Registration
Session 5: Hydrological Modelling and Climate Change Impacts
Chaired by: Prof. Tomoharu Hori (Kyoto University, Japan)
Note: Allocated time for Oral Presentations : 20 min. talk + 5 min. discussion

9:00 – 9:25

On Bayesian Probabilistic Flash FloodGuidance

Prof. Biswa Bhattacharya(UNESCO-IHE, Netherlands)

9:25 – 9:50

Rainfall Observation from Space: Global
Satellite Mapping of Precipitation(GSMaP)

Dr. Takuji Kubota (Japan Aerospace
Exploration Agency, Japan)

9:50 – 10:15

A Stochastic Model for Occurrence ofFlash Flood Events in a Wadi of theJordan Rift Valley

Associate Prof. Koichi Unami(Kyoto University, Japan)

10:15 – 10:40

Hydrological Modeling and Early
Warning System in Egypt

Associate Prof. Eman Hassan(National Water Research Center,Egypt)

10:40 – 11:05

Hydrological Modelling of Flash Flood toAssess the Distributed Mitigation
Structures in Wadi Abadi Case Study of
the Eastern Desert in Egypt

Mr. Mohammed Abdel-Fattah(Kyoto University, Japan)

11:05 – 11:25

Coffee BreakSession 6: Integrated Disaster Risk Management I
Chaired by: Associate Prof. Kazuyoshi Nishijima (Kyoto University, Japan)
Note: Allocated time for Oral Presentations : 20 min. talk + 5 min. discussion

11:25 – 11:50

Joint Natural and Technological
Disasters: An Emerging Risk Issue

Prof. Ana Maria Cruz (KyotoUniversity, Japan)

11:50 – 12:15

Quantitative Assessment of Risk Due toNaTech (Joint Natural and TechnologicalHazards) Scenarios Caused by Floods

Associate Prof. Gabriele Landucci(University of Pisa, Italy)

12:15 – 12:40

What Does Integrated Disaster Risk
Management Mean? From the Planning
Perspective of Disaster Risk Reduction

Prof. Hirokazu Tatano (KyotoUniversity, Japan)X12:40 – 13:40

Lunch BreakSession 7: Integrated Disaster Risk Management II
Chaired by: Prof. Hirokazu Tatano (Kyoto University, Japan)
Note: Allocated time for Oral Presentations : 20 min. talk + 5 min. discussion

13:40 – 14:05

An Economic Growth Model for Flood
Risk Reduction with a Focus on Human
Capital

14:05 – 14:30

From Risk Information to Policy Options- Dr. Junko Mochizuki (InternationalUnderstanding Scales, Contexts andInstitute for Applied Systems
Perspectives to Inform Global and LocalAnalysis, Austria)
Options for Disaster Risk Management

14:30 – 14:55

What Constitutes a Successful
Participatory Disaster Risk Management?
Insights from Ghana.

14:55 – 15:15

Coffee Break

Associate Prof. Dr. Muneta
Yokomatsu (Kyoto University,Japan)

Dr. Subhajyoti Samaddar (KyotoUniversity, Japan)

Session 8: Panel and Closing Discussions / GADRI / Future Plans (all)Moderator: Associate Prof. Sameh Kantoush (Kyoto University, Japan)
15:15 – 15:25

Vision and Mission of the Global
Alliance of Disaster Research Institutes(GADRI)

Prof. Hirokazu Tatano (KyotoUniversity, Japan)

15:25 – 15:45

Summaries and Outcomes of Flash Flood
Symposium in Kyoto

Associate Prof. Sameh Kantoush(Kyoto University, Japan)

15:45 – 17:30

Plenary Discussion for Future Research
Collaboration

All participants

XIIndex
Session 1: Case Studies of Flash Floods Management
Flash Floods in Egypt: Strategies, Measures, and Harvesting
エジプトにおけるフラッシュフラッド：計画、対策手法、水資源利用
Karima Attia (National Water Research Center, Egypt)

1

Flash Floods Mitigation and Harvesting Case Study of Oman
オマーンにおけるフラッシュフラッドの被害軽減と水資源利用
Ahmed Said Al Barwani(Ministry of Regional Municipalities and Water Resources, Oman)

11

Flash Floods in Arid and Semi-arid Region: Overview of Sudan Experience
乾燥・半乾燥地域におけるフラッシュフラッド：スーダンでの経験
Abdalla Abdelsalam Ahmed (UNESCO Chair, Sudan)

21

Session 2: Wadi’s Future Developments Projects & Integrated Water Management
Integrated Strategies for Management of Flash Floods in the Arabian Wadi Basins
アラブ諸国のワジ谷におけるフラッシュフラッド管理のための総合計画
Sameh Kanoush (Kyoto University, Japan)

31

Integrated Water Management Strategy in Duqm Area, Sultanate of Oman
オマーン王国・ドゥクムにおける総合水管理計画
Saif Alhinai (Special Economic Zone Authority at Duqm, Oman)

39

Tangible and Potential Risks of Flash Floods in the Hashemite Kingdom of Jordan
ヨルダン・ハシミテ王国におけるフラッシュフラッドの顕在的と潜在的リスク
Osama Mohawesh (Mutah University, Jordan / Guest Scholar, Kyoto University)

53

Session 3: Flood Mitigation & Water Harvesting Techniques
Developing Groundwater Resources in Arid Lands: the Eastern Desert Project - EDP
乾燥地における地下水資源の開発：東部砂漠プロジェクト
Ahmed Wagdy (Cairo University, Egypt)

61

Managing Groundwater Recharge and Recovery, as Reuse Method:a Chance for Egypt's Water Supply and Other Arid and Semiarid Countries
水再利用の手段としての地下水涵養の管理：
エジプトの水供給と他の乾燥・半乾燥国におけるチャンス
Uwe Tröger (TUB, Germany)
XII75

Using Remote Sensing and GIS for Estimating the Flash Flood Parameters for the Dryland
Catchments: Implication for Water Resources Management
乾燥地集水域におけるリモートセンシングと GIS を用いたフラッシュフラッド特性の推定：
水資源管理への提示
Mohamed EL-Bastawesy (National Authority for Remote Sensing, Egypt)

83

Establishing a Saudi Arabia Land Data Assimilation System for Proper Water Resources
Management
適切な水資源管理に向けたサウジアラビア土地データ同化システムの構築
Khalid A. Al-Ghamdi (Umm Al-Qura University, Kingdom of Saudi Arabia)

89

Session 4: Innovative Technologies
Feasibility Study on Application of Trapezoidal CSG Dam for Flash Flood Mitigation
Measuresフラッシュフラッド対策としての台形 CSG ダムの適用可能性調査
Hitoshi Yoshida (Japan Dam Engineering Center, Japan)97

A Case Study on Flood Forecasting Applicable to Insufficient Observation Areas
観測データの不十分な地域に適用可能な洪水予測手法に関する事例研究
Yoichi Iwami (Public Works Research Institute, Japan)

103

Operational Flash Flood Forecasting, Warning System and Management for Sinai Peninsula,Egypt
エジプト・シナイ半島の運用的なフラッシュフラッドの予測、警戒システム、管理Mohammad Meshkati Shahmirzadi (Antea Group, Belgium)

111

Session 5: Hydrological Modelling & Climate Change Impacts
On Bayesian Probabilistic Flash Flood Guidance
ベイズ確率によるフラッシュフラッドのガイダンス
Biswa Bhattacharya (UNESCO-IHE, Netherlands)

115

Rainfall Observation from Space: Global Satellite Mapping of Precipitation (GSMaP)
宇宙からの降雨観測：Global Satellite Mapping of Precipitation（GSMaP）
Takuji Kubota (Japan Aerospace Exploration Agency, Japan)

121

A Stochastic Model for Occurrence of Flash Flood Events in a Wadi of the Jordan Rift Valley
ヨルダンのワジにおける鉄砲洪水事象の発生に対する確率論的モデル
Koichi Unami (Kyoto University, Japan)

127

XIII

Hydrological Modelling and Early Warning System in Egypt
エジプトにおける水文モデリングと早期警戒システム
Eman Hassan (National Water Research Center, Egypt)

133

Hydrological Modelling of Flash Flood to Assess the Distributed Mitigation Structures
in Wadi Abadi Case Study of the Eastern Desert in Egypt
エジプト東部砂漠のワジにおけるフラッシュフラッドの水文モデルと分布型減災構造物の評価
Mohammed Abdel-Fattah (Kyoto University, Japan)

141

Session 6: Integrated Disaster Risk Management I
Joint Natural and Technological Disasters: an Emerging Risk Issue
自然災害と産業事故の複合災害：新たなリスク
Ana Maria Cruz (Kyoto University, Japan)

147

Quantitative Assessment of Risk Due to NaTech (Joint Natural and Technological Hazards)
Scenarios Caused by Floods
水害がトリガーとなる Natech（自然災害と産業事故の複合災害）リスクの定量的評価
Gabriele Landucci (University of Pisa, Italy)

153

What Does Integrated Disaster Risk Management Mean? From the Planning Perspective ofDisaster Risk Reduction
総合防災とは何か？：災害リスク軽減のための計画論の視点から
Hirokazu Tatano (Kyoto University, Japan)

161

Session 7: Integrated Disaster Risk Management II
An Economic Growth Model for Flood Risk Reduction with a Focus on Human Capital
経済成長モデルによる水害リスク対策の評価：人的資本形成過程に着目してMuneta Yokomatsu (Kyoto University, Japan)

165

From Risk Information to Policy Options: Understanding Scales, Contexts and Perspectives
to Inform Global and Local Options for Disaster Risk Management
リスク情報を利用した政策オプションの共創：異なる問題背景・認識を反映したグローバル・地域スケールでの災害管理オプションの提唱
Junko Mochizuki (International Institute for Applied Systems Analysis, Austria)

177

What Constitutes a Successful Participatory Disaster Risk Management?
Insights from Ghana
参加型災害リスクマネジメントが結実するためには何が必要か？ガーナでの経験からSubhajyoti Samaddar (Kyoto University, Japan)
XIV183