PRELIMINARY FLOOD RISK ASSESSMENT IN THE SAVA RIVER BASIN July, 2014 Date Document Revision History Document Author/Reviser 23 September 2013 Initial draft – sent to PEG FP for comments Secretariat/ PEG FP 17 December 2013 Draft 2 – sent to PEG FP for comments Secretariat/ V. Tusić, M. Babić Mladenović 30 January 2014 Draft 2.1 – reviewed at 23rd PEG FP meeting Secretariat/ PEG FP 20 March 2014 Draft 3 – sent to PEG FP for comments Secretariat/ V. Tusić, A. Bezdrob 14 April 2014 Draft 3.1 – sent as doc. for 24th PEG FP meeting Secretariat/ PEG FP 02 June 2014 Draft 4 – sent to PEG FP for comments Secretariat/ V. Tusić 10 June 2014 Draft 4.1 – sent to PEG FP for approval Secretariat/ PEG FP (no comments) 18 June 2014 Draft 5 – sent to ISRBC Secretariat/ ISRBC 01 July 2014 ISRBC accepted and approved publishing on web ISRBC International Sava River Basin Commission Kneza Branimira 29 10 000 Zagreb, Croatia T: + 385 1 488 69 60 F: + 385 1 488 69 86 [email protected] www.savacommission.org TABLE OF CONTENTS 1 INTRODUCTION ........................................................................................................................................... 1 2 GENERAL INFORMATION ON THE SAVA RIVER BASIN .................................................................. 3 3 OVERALL APPROACH AND METHODOLOGY ..................................................................................... 4 3.1 SLOVENIA ............................................................................................................................................................................ 5 3.2 CROATIA .............................................................................................................................................................................. 6 3.3 BOSNIA AND HERZEGOVINA ............................................................................................................................................ 7 3.3.1 Federation of B&H ......................................................................................................................................................... 7 3.3.2 Republika Srpska ........................................................................................................................................................... 8 3.4 SERBIA ................................................................................................................................................................................. 8 4 SIGNIFICANT PAST FLOODS AND POTENTIAL FUTURE FLOODS ............................................ 10 4.1 SIGNIFICANT PAST FLOODS ........................................................................................................................................... 11 4.2 POTENTIAL ADVERSE CONSEQUENCES OF FUTURE FLOODS..................................................................................... 17 4.2.1 The Sava River ............................................................................................................................................................. 18 4.2.2 Tributaries to the Sava River ................................................................................................................................. 19 5 AREAS WITH POTENTIAL SIGNIFICANT FLOOD RISK ................................................................. 22 5.1 SLOVENIA ......................................................................................................................................................................... 22 5.2 CROATIA ........................................................................................................................................................................... 22 5.3 BOSNIA AND HERZEGOVINA ......................................................................................................................................... 22 5.4 SERBIA .............................................................................................................................................................................. 23 6 ADDRESSING THE IMPACTS OF CLIMATE CHANGE ..................................................................... 24 7 TRANSBOUNDARY COORDINATION AND INFORMATION EXCHANGE .................................. 25 8 CONCLUSIONS ........................................................................................................................................... 26 REFERENCES ................................................................................................................................................... 27 MAPS .................................................................................................................................................................. 28 FIGURES Figure 1: The 1896 Drina flood in Višegrad ......................................................................................................... 11 Figure 2: The 1964 flood in Zagreb ......................................................................................................................... 12 Figure 3: May 2014 flood in the Sava River Basin ............................................................................................. 17 TABLES Table 1: Type of floods .................................................................................................................................................. 10 Table 2: Important flood prone areas of the Sava River ................................................................................. 20 ABBREVIATIONS APSFR Area with Potential Significant Flood Risk EC European Commission FASRB Framework Agreement on the Sava River Basin FB&H Federation of Bosnia and Herzegovina GIS Geographic Information System ICPDR International Commission for the Protection of the Danube River ISRBC International Sava River Basin Commission PEG FP Permanent Expert Group for Flood Prevention PFRA Preliminary Flood Risk Assessment RoS Republic of Srpska (Republika Srpska) UNECE United Nations Economic Commission for Europe Preliminary Flood Risk Assessment in the Sava River Basin 1 INTRODUCTION Floods are natural phenomena which cannot be prevented. Besides, some human activities and climate change contribute to an increase in the likelihood and adverse impacts of flood events. The assessment of flood risk is therefore a basis for decision-making in flood management at international, national, regional and local levels. The Sava River Basin countries have had a long tradition of different activities in flood management, including both structural and non-structural measures. A comprehensive elaboration of flood management in the basin has been given in the Sava River Basin Analysis report (ISRBC, 2009)1. The report provides basic information on flood prone areas, a detailed description of flood defence system including design criteria and current level of protection, overview of flood forecasting capabilities, commanding responsibilities in the countries and it provides an insight in the common actions coordinated by the Sava Commission. Common goals of the Framework Agreement on the Sava River Basin (FASRB)2 contracting Parties3 in flood management are elaborated in more details in the Protocol on Flood Protection to the FASRB4. The Protocol defines framework for cooperation and implementation of the activities aimed at creating the conditions for sustainable flood protection in the Sava River Basin. The Protocol emphasises the importance of coordinated measures, works and activities for the reduction of flood risks throughout a river basin, and operation in accordance with “no harm rule” principle. Therefore, in order to contribute to reduction of adverse consequences of floods, especially for human health and life, the environment, cultural heritage, economic activity and infrastructure associated with floods, it was agreed that countries in the Sava River Basin will cooperate on the following tasks: . Preparation of the Program for development of the Flood Risk Management Plan in the Sava River Basin; . Undertaking of Preliminary Flood Risk Assessment; . Preparation of flood maps; . Development of Flood Risk Management Plan in the Sava River Basin; . Establishment of the Flood forecasting, warning and alarm system in the Sava River Basin; . Exchange of information significant for sustainable flood protection; . Implementation of all measures and activities of mutual interest, originating from the abovementioned planning documents or activities, or other mutually agreed measures and activities. In the execution of these tasks, the Sava countries should cooperate on the basis of the Directive 2007/60/EC of the European Parliament and of the Council of 23 October 2007 on the assessment and management of flood risks (EU Floods Directive), taking into account the Action Programme on Sustainable Flood Protection in the Danube River Basin and taking into account the good practices in cooperation in the field of flood protection in the Sava River Basin. The Third and the Fourth Meeting of the Parties to the FASRB (held in Ljubljana on 1 June 2011 and in Sarajevo on 31 May 2013, respectively), recognized great efforts and work of the Sava Commission and the Parties invested so far in the field of flood management, and supported further cooperation in undertaking of all tasks envisaged by the Protocol, even before its formal entry into force. 1 Sava River Basin Analysis Report: http://www.savacommission.org/dms/docs/dokumenti/documents_publications/publications/other_publications/sava_river_basin_an