Int. Roundtable on Transboundary Waters Management, 15-16.12.2011, Marina Babic Mladenovic
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Transboundary flood management in a changing environment International Roundtable on Protection and Sustainable Use of Trans-boundary Waters in South East Europe, 15-16 December 2011, Zagreb, Croatia
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Int. Roundtable on Transboundary Waters Management, 15-16.12.2011, Marina Babic Mladenovic
- 1. International Roundtable on Protection and Sustainable Use of Transboundary Waters in Southeastern Europe, Zagreb, 15-16 Dec 2011 THEMATIC BLOCK 1- Emerging Challenges, Extreme phenomena-Floods Dr Marina Babić Mladenović INSTITUTE “JAROSLAV ČERNI” - BELGRADE
- 5. A few cycles of intensive snow and intervals with unusually high air temperatures Water equivalent of snow above average values
- 6. Coincidence of flood on the Danube and Tisza river, caused the hi h t th highest water l t levels ever l recorded
- 7. Example of 2006 Flood
- 8. Example of 2006 Flood 16000 > Q100 15000 Danube downstream of V. 14000 Morava 13000 Danube between Sava and V. Morava 12000 11000 10000 Discharge (m /s) 9000 3 m 8000 Danube between Drava and Tisa < Q100 7000 6000 D 5000 Sava river ∼ Q5 4000 3000 2000 Tisa river ∼ Q100 Velika Morava river 1000 Tamis river 0 23 25 27 29 31 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 2 4 6 8 10 12 14 16 18 20 22 March April May
- 9. Successful flood defence, very expensive 10 M € 240 000 ha flooded – unprotected zones (between levees) and arrable land flooded by excessive inland waters - damage 30 M € State of emergency in 10 municipalities along the Danube and Tisa Transboundary cooperation ◦ Good cooperation between the HMS Serbia and HMS of other DRB countries – hydrological data and forecasts ◦ Flood release through the Iron Gate 1 and 2 dams was strictly according to RO-RS bilaterally agreed rules of operation ◦ ICPDR report
- 10. Example of 2010 flood - DRB
- 11. Example of 2010 flood - Serbia - Unfavorable hydro-meteorological conditions in the first half of 2010 o Prolonged but not extreme rainfall o Extremely wet conditions – saturated soil - Flood waves registered on 39 large and medium rivers, and numerous torrents - Repeated flood waves p - Flood damage - mainly on unprotected areas Jan + Jun/July + Dec June Dec 2009 - Feb 2010 Dec June Floods caused by Feb - extreme hydro- hydro- Feb - April April meteorological phenomena
- 12. Example of 2010 flood - Serbia Cause: rapid snowmelt + rainfall (up to 15 mm/day) + very saturated soil mm/day) Consequence: 300 houses flooded in unprotected zone Activity: Reconsideration of flood risk + local flood protection measures
- 13. The hydrological situation in 2010 was highly unfavorable, with repeated floods on nearly all national and international rivers - example of the Sava River, where floods occurred at the very beginning of the year, in the summer, and in December 2010. Flood defense activities l t d f 185 d Fl d d f ti iti lasted for days – mostly emergency tl flood defense was in force and in some areas the emergency situation was declared Transboundary cooperation ◦ International data and forecast exchange in the region need to be improved – especially in the Drina river basin ◦ ICPDR report
- 14. Example of 2010 flood – Drina river basin The largest and most important tributary of the Sava River Catchment area 20320 km2 Montenegro 31,5% M t 31 5% Serbia 30,5% Bosnia and Herzegovina 37% g % Albania 1%
- 15. Example of 2010 flood – Drina river basin Drina, Tara and Piva and several have End of November/beginning of December 2010 snow-rain regime - largest flows occur in - strong cyclone activity in Montenegro and May and April. East Herzegovina - causing heavy rainfall, strong southerly winds, and very high Melting of snow in the mountains is usually temperatures for the time of year. gradual – disastrous floods are not frequent. q Snowmelt and abundant rainfall (100 200 mm (100-200 in 3 days) led to a difficult flood situation in the Drina river Basin. Flood waves on the Drina tributaries (Piva, Tara, Cehotina, Lim and Jadar) and the main course were exceptional.
- 16. Example of 2010 flood – Drina river basin
- 17. Example of 2010 flood – Drina river basin HE Zvornik HE Bajina Basta HE Visegrad
- 18. Example of 2010 flood – Drina river basin
- 19. Example of 2010 flood – Drina river basin
- 20. Example of 2010 flood – Drina river basin
- 21. Role of HPP reservoirs in flood events – flood storage? Enhancement of cooperation between HMSs ◦ Common study of 2010 flood development – lessons for the future ◦ Development of early warning system ◦ Common regional hydrometeorological information system Reconsideration of flood levels if new levee is constructed on the left bank between Janja and Bijeljina – large volume of the existing floodplain
- 22. HUNGARY CROATIA SERBIA ROMANIA SERBIA
- 23. % 0 10 20 30 40 50 60 70 80 90 100 4 55 0 1 2 .5BEZDAN 1 0 .0 A PATIN 4 10 0 64 .4 1 7 OG OJEVO 3BO 0 3 30 .0 1 3VU 0 UKOVAR 1 5 .5 N. SAD 2 55 0 2 55 .5 1SLA 0 1 ANKAME N Stacionaza (km) 1 7 .0 ZEMUN 1 30 0 1 40 .0 1 5 PANCEVO P0 Decreased occurrence of ice phenomena 1 62 .2 1 1 EDEREVO SME 0 1 .5 .8 V G8 0 9RADIS TE R0 1 4GO LUBAC 0 20 G0 .0 period 1 7 -20 6 period 1 0 -19 0 91 0. 91 7. MILA D. 9 90ANOVA C 9 .00
- 24. Decreased duration of ice phenomena 550 500 450 400 350 SNTV ( C) o 300 V 250 200 Floating ice 150 100 50 0 0 10 20 30 40 50 60 70 80 90 100 110 ТLP (dana) 550 500 450 400 NTV ( C) 350 300 Standing ice 250 SN 200 ) 150 100 50 0 0 10 20 30 40 50 60 70 80 ТLS (dana) 1901-1970. 1971-2006.