Implementation of Flood Directive in Hungary

Transcription

1 Implementation of Flood Directive in Hungary - Brussels, Belgium, 11th of March in KÁROLY GOMBÁS MSc in water engineering Fluvial flod protection, deputy department leader NORTH-TRANSDANUBIAN WATER DIRECTORATE GENERAL DIRECTORATE OF WATER MANAGEMENT MINISTRY OF INTERIOR, HUNGARY CHAIRMAN, NATIONAL DELEGATE FLOOD PROTECTION EXPERT GROUP BFP-EG) INTERNATONAL COMISSION OF THE DANUBE RIVER NATIONAL DELEGATE WORKING GROUP ON FLOODS (WG-F) EUROPEAN COMISSION

2 Table of contents 1. Water related damages in Hungary 2. The EU Flood Directive and beyond 3. Risk management strategy and measures 4. Importance of international coordination 5. Long term goals

3 Inflows and outflows, domestic sources of Hungary Highest observed discharges at border sections SZLOVÁKIA 1200 UKRAJNA AUSZTRIA SZLOV. 620 ROMÁNIA Major rivers flood conditions HORVÁTORSZÁG 2700 SZERBIA DANUBE : m 3 /s TISZA : m 3 /s DRÁVA : m 3 /s

4 Could we let the rivers flow as they want, giving up the blue areas? Obviously not. 25 % of the whole national territory is endangered by fluvial floods. EU Flood Directive APSFR areas. FLUVIAL FLOOD HAZARD AND PRIMARY DIKE SYSTEM

5 Could we let the rivers flow as they want, giving up the blue areas? Obviously not. 25 % of the whole national territory is endangered by fluvial floods. EU Flood Directive APSFR areas. FLUVIAL FLOOD HAZARD AND PRIMARY DIKE SYSTEM 2800 km river stretch with embanked floodplain (fluvial) 4200 km of primary dikes (fluvial) MÁSZ design flood level, 1% return probability without ice Probable extent of inundation was calculated in 1970 s by VITUKI, together with MÁSZ levels and freeboard regulation

6 Cropland Railway Traffic infrastructure Potential threat on GDP Inhabitants Settlements

7 Occurance of water related damages, endangered assets What we do protect in reality. Floods: Small every 2-3 years Significant every 5-6 years Extraordinary every years Excess water: Drought: every 2-3 years every 3-5 years Potentially affected areas 40 % of the cultivated area 32% of railways 15% of main roads Settlements on the flood plain: 646 Population living on the flood plain: 2,3 million Estimated value of endangered assets: HUF billion = EUR 33.3 billion = USD 39 billio

8 European Comission Directive 2007/60/EC on the assessment and management of flood risks (26/11/2007) Content of the Directive Designation of managing authority Preliminary flood risk assessment (Art. 4(3)) Areas of potential significant flood risk (Art. 5(2)) DEC Flood hazard and risk maps (Art. 6(2)) 2013.DEC Flood risk management plans (Art. 8(2)) 2015.DEC Flood risk mapping and development of strategic risk management plan ÁKK - Árvízi kockázati térképezés és stratégiai kockázati terv készítése (KEOP B) Project time-table I. phase, methodology II. phase, preliminary risk assesment, data preparation III. phase, mapping, planning done done In preparation preliminary risk assesment done EU deadlines Risk and hazard mapping done Strategic planning Probably in time

9 National water services Resp. for EU FD+WFD (!)

10 National reports Preliminary Flood Risk Assessment 2011 (

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12 ÁKIR ÁKK-II building project background database Huge data acquistion and field geodesy work, purchasing meta information Building GIS database, coherent for the whole country + hydrology data ArcMAP modul, calling 1D and 2D models, centralized server-based structure Inbuilt risk calculation functions, land use development prognosis (30 y) Capable for analysis of measures and changing boundary conditions

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17 Probability of the event probability of inundation 30y land use development scenarios CBA 110% treshold

18 National reports Preliminary Flood Risk Assessment 2011 ( Hazard and risk maps 2013 (

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20 Risk management possibilities Structural measures: Heightening the dikes very expensive and soil problems occur Building reservoirs Vásárhelyi plan along the Tisza, at Danube no space for that Non-structural, legal and regulatory measures: Good national and international cooperation (WG-F, ICPDR FP-EG, Border Comm.) Precise flood forecasting: continous development Raising awareness: municipality flood defence plans Recalculation of the design flood level (MÁSZ): legal update on 100y defence Sustainable floodplain management (plans): short and long term measures Facing the floods

21 Raising awareness: municipality flood defence plans ( ) After 2013 Danube flood more than 160 plans for settlements were carried out Unprotected, open floodplain situation: state financed preparation Hungarian Engineering Chamber guidence document (2010) need revision

22 Recalculation of the design flood level (MÁSZ ) 2014 Accomplished for all 2800 km diked rivers (!): 2013 Danube flood calls attention to flood propagation changes Scientific approach, even considering groundwater inflow and infiltration loss Definition of discharge probability in certain water gauges based on years data series; Generation of long-term discharge curves as boundary conditons and choosing HQ100 1D modeling with calibration of the recent events, calculation of longitudial profiles Came to legal force on 01/01/ ,5 higher levels on all reaches! Water level with coordinate points and rivers+dike section, 6 y update

23 Developing concept of sustainable fluvial flood damage protection Experience and technical knowledge lead to conceptudial progress. Classic fluvial flood protection: emerging dikes, forming floodplains with embankments, dealing with high ground water (excess water) - limitations: sedimentation, side-arm separation, riverbed lowering, subsoil problems and seepage, excess water pumping capacity, aerial sensitivity Retention: creating controlled reservoirs and retention ponds - limitations: large areas needed, new defense and maintenance lines, volume Sustainable floodplain management Get aware and improve of the conveyance capacity of the floodplain, controlling artificial and natural processes among the dikes. Main purpose is to keep or reduce the MÁSZ level

24 Sustainable floodplain management plans 2014 accomplished: All the 2800 km reaches (!) were 2D modeled and investigated based on MÁSZ Conveyance lanes, bank lines, elements in the flood plain, planned measures Legal consequences/limitations for every single field properties (state/private)

25 Sustainable floodplain management plans 2014 accomplished: All the 2800 km reaches (!) were 2D modeled and investigated based on MÁSZ Conveyance lanes, bank lines, elements in the flood plain, planned measures Legal consequences/limitations for every single field properties (state/private)

26 Risk management progress Structural measures: Heightening the dikes very expensive and soil problems occur Building reservoirs Vásárhelyi plan along the Tisza, at Danube no space for that Non-structural, legal and regulatory measures: Precise flood forecasting: continous development, 2014: Leitha/Lajta river Raising awareness: municipality flood defence plans Recalculation of the design flood level (MÁSZ): legal update 2014 Sustainable floodplain management (plans): short and long term measures 2014 Optimal way:

27 Risk management progress Structural measures: Heightening the dikes very expensive and soil problems occur Building reservoirs Vásárhelyi plan along the Tisza, at Danube no space for that Non-structural, legal and regulatory measures: Precise flood forecasting: continous development, 2014: Leitha/Lajta river Raising awareness: municipality flood defence plans Recalculation of the design flood level (MÁSZ): legal update 2014 Sustainable floodplain management (plans): short and long term measures 2014 Real method

28 Risk management progress Structural measures: Heightening the dikes very expensive and soil problems occur Building reservoirs Vásárhelyi plan along the Tisza, at Danube no space for that Non-structural, legal and regulatory measures: Precise flood forecasting: continous development, 2014: Leitha/Lajta river Raising awareness: municipality flood defence plans Recalculation of the design flood level (MÁSZ): legal update 2014 Sustainable floodplain management (plans): short and long term measures 2014 Good national and international cooperation

29 National and transboundary issues in flood management HU Conclusions Main interests The main purpose of risk management is to handle the 100y flood levels, primary do interventions in the floodplain to reduce water level Important: balanced costs for long term strategic flood management, protection and maintenance ( war and peace ) as well = efficiency Bilateral connections and communication is essential, that s the operative level of the international cooperation; regular meetings and common bilateral program planning is needed Further development: Do the public commenting of the flood risk management plans, floodplain management plans from 06/2015, preferably together with RBMP-2 Recalculate the flood hazard and risk maps in a more detailed way (2015) Actualization of localization plans (dike overtop/failure management, 2015) Submit successfully the 4th EU FD national report (2016/03) Realize the measures by domestic budget (cohesion funds) or via international projects, evaluate the results ( )

30 Flood risk mapping and development of strategic risk management plan ÁKK - Árvízi kockázati térképezés és stratégiai kockázati terv készítése (KEOP B)

31 Thank You for your attention! Ministry of Interior General Directorate of Water Management Presenter: