Session FT5.22: Integrated Risk Management in Mediterranean Towns: Experience Sharing. Expert Panel

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George Carter
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1 Session FT5.22: Integrated Risk Management in Mediterranean Towns: Experience Sharing Expert Panel Prof. Dr. Veysel EROGLU Director General of State Hydraulic Works

2 Flood is a natural event. However, human interference converts it to a disaster!

3 Main causes of flood disasters Changing in the land structure because of enlargement of the settlement Climate change effects on hydrological regimes Engineering structures in the channel Fast urbanization which results in higher runoff coefficient Unsuitable agricultural activities Deforestation

regimes Engineering structures in the channel Fast urbanization which

4 Effect of urbanization on flood runoff is important! Before After Before After (figures are from the presentation of Akira Terakawa, ICHARM)

5 Lessons gained from the local actions presented in the session

6 Local action: Early warning systems for stormwater in cities of south of France Physical protection is necessary but limited To manage floods, local authorities need to be able to base their flood policy on prevention, warnings, post-crisis analysis and feedback from former experience Integrated solutions for flood management have to be developed with involvement of local authorities and sensibilization of the public

prevention, warnings, post-crisis analysis and feedback from former experience Integrated solutions for

7 Local action: INUNDA - Minimization of flood impacts in urban areas This local action is a support to the implementation of integrated flood risk management This local action can be reproduced by defining an integrated flood risk management plan at the scale of the catchment basin

flood risk management This local action can be reproduced by defining

8 Local action: Risk management of urban rain events in a coastal city: the case of Marseilles The experience of the city of Marseilles in managing rainfall risks is transposable to other cities The decision-making model and the city organisation for the municipal emergency action plan can be reproduced in other cities

risks is transposable to other cities The decision-making model and the city

9 Local Action: Protection against flooding in Great Tunis A close cooperation between the different stakeholders is needed The method presented could be generalized among other flood threatened places in the Mediterranean Region

is needed The method presented could be generalized

10 En ez Söke K ul a KÜTA HYA Kemer Aksu Al pu Serik Bor Turha l Pazar TOK AT Dereli O f RİZE MUŞ Hizan AĞ RI Erciş VAN Flood is very common hydrological disaster in Turkey EDİRNE İZMİR Bodrum KIRKLAR Lülebu ELİ rgaz AYDIN MUĞLA Marmaris BURSA İSTANBUL BİLECİ K SAKAR YA Korkuteli ZONGULDAK ESKİŞEHİR ANTALYA DÜZCE Derebucak BARTIN Manavgat Cihanbeyli KONYA Beyşehir Bozkır Gazipaşa KASATAMONU KIRIKKA LE Şefaatli Dodurga Sungurlu AKSARAY YOZGAT Silifke İÇEL Osmancık ÇORUM KAYSERİ NİĞDE Seyhan AMASY A Harun iye OSMANİYE HATAY GİRES UN Yağlıde re ELAZI Ğ ERZİNC AN Ardeşen Çayeli BAYBU RT Güneysu ERZUR UM BİTLİS ARDAH AN Adilcev az FLOODED AREA IN 2004 FLOODED AREA IN 2003 FLOODED AREA IN 2002 FLOODED AREA IN 2001 HAKK ARİ Çaldıra n Yüksek ova FLOOD EVENTS OF 2005 IN TURKEY (FROM THE FLOOD INVENTORY MAP)

KIRIKKA LE Şefaatli Dodurga Sungurlu AKSARAY YOZGAT Silifke İÇEL Osmancık ÇORUM KAYSERİ NİĞDE Seyhan AMASY A Harun iye OSMANİYE HATAY GİRES UN Yağlıde re ELAZI Ğ ERZİNC AN Ardeşen Çayeli BAYBU RT

11 TURKEY Mediterranean Sea

12 DISCHARGE ( m³/s) BERDAN DAM ( ) Max Operation Height : Min Operation Height : HEIGHT ( m ) Inlet Outlet Height Min Op.Height Max Op.Height Nearly 1000 m 3 /s of discharge during the flood period flood has been prevented without any harm, with the help of the Berdan Dam s active volume. By this sample case, it is clearly seen that the systems with storage facilities have positive effects on flood.

12.2001 10.12.2001 11.12.2001 12.12.2001 1 Inlet Outlet Height Min Op.Height Max Op.

13 Recent decades flooding events with their costly results have brought Turkey to Hazard mitigation approach

14 The Flood Forecasting Center in DSI

15 New initiatives in flood forecasting Mediterranean Sea

16 In summary With respect to the risk management, preventive measures should be taken in: Retention areas Maintenance of controlled urbanization districts Conservation of nature Construction of reservoirs and regulating basins Detention areas Preservation of urbanization control zones Promotion of conditions favorable to agricultural activities Low-lying areas Development of drainage facilities Construction of storage facilities Encouragement of use of flood-proof building

areas Preservation of urbanization control zones Promotion of conditions favorable to agricultural activities

17 Concluding remarks Floods should be held in an integrated approach namely Integrated Flood Management which should be a part of the Integrated Water Resources Management In Mediterranean region, the rain characteristics are similar Involvement of various stakeholders in the planning process is a necessity Hydrological impact assessment due to basin development should be assessed and appropriate measures be taken for preventing or mitigating the negative impacts Floods should be considered before in the risk management: Risk mapping Public awareness and preparedness River improvement Preservation and restoration of river environment and Improvemment of education for citizens for historical, cultural and ecological value of the river Promotion of the natural and cultural heritage of the basin is needed

measures be taken for preventing or mitigating the negative impacts Floods should be considered before in the risk management: Risk mapping Public awareness and preparedness River improvement

18 Thank you

Monitoring data and existing information Country Presentation from Turkey

Workshop on DEVELOPING REGIONAL COOPERATION FOR SHARED KARST AQUIFER MANAGEMENT IN SEE 27-28 June 2008 Thessaloniki, Greece Monitoring data and existing information Country Presentation from Turkey Plan