2014 floods in Serbia

Transcription

1 16 th Meeting of WGF, Rim, 9-10 October floods in Serbia Radovanka Pavlović Ministry of Agriculture and Environmental Protection Republic Water Direcrorate, Belgrade, Serbia

2 Specific cyclone May 2014 Low-pressure area formed over the Adriatic Sea due to polar air from Central Europe meeting with the humid subtropical air of the Mediterranean basin Route of the center of cyclone on ground level 13 th -17 th May (Országos Meteorológiai Szolgálat)

3 Red meteorological alarm on 12 th May RHMSS issued meteorological alarm 2 to 3 days of heavy rain

4 Extreme meteorological event 3-day rainfall (14-16 May 2014) > P 1000y

5 Extreme hydrological situation Already saturated soil due to prolonged rain in April and first week of May Extreme rainfall in 3 days Torrents high flow velocities, massive sediment movement, landslides Small and medium rivers sudden and great increases of water levels Sava river extreme water levels due to high flows on all right tributaries in Croatia and Bosnia Level of flood water exceeded the level of existing protection Flood protection system seriously damaged and failed at many locations

6 Extreme water levels Recorded on almoust 50 hydrological stations +220 cm Z. Morava (Miločaj) +161 cm Sava (Jamena) +133 cm Skrapež (Požega)

7 Flood defense May 14 th May 15 th Extremely rapid development of floods mostly second flood defense level proclaimed 7

8 Affected APSFR in Serbia 42 APSFR affected (out of 99 identified in Serbia) Municipalities where emergency situation was declared Whole country on 15 th May

9 Torrential flood APSFR Krupanj Flood protection structures destroyed or severely damaged Landslides and massive sediment deposits Municipality was isolated for 4 days all bridges collapsed

10 APSFR Crnica Paraćin City

11 APSFR Kolubara The most downstream tributary of the Sava Mouth is 27 km upstream of Belgrade RB area 3638 km2 Dense hydrographic network

12 Kolubara flood, return period 1000 years?

13 Kolubara RB - Upstream part, Valjevo city Total damage: 9 mill

14 Kolubara RB Middle part, open-pit coal mines 187 mill m 3 of water + 3 mill m 3 of mud Damage: 200 mill

15 Kolubara RB Lower part, Obrenovac city

16 Kolubara RB Lower part, Obrenovac city 80% territory of Obrenovac city was flooded Water depth in some parts was 5m Evacuated: 25,000 Partially or totally devastated houses: more than 1,000 Damage to transport and communications: 17,000,000 Endangered TPP Nikola Tesla (the largest in Serbia, installed power MW)

17 Flood defense along the Sava river Sava River Basin (B&H, Croatia and Serbia) 100 year flood long flood defense expensive but successful What would have happened if levees in Bosnia and Croatia didn`t collapse?

18 Flood defense along the Sava river Rapid raise of water levels (4 days!) but still enough time to apply flood defense measures where needed and prevent flooding of vast lowland areas and large cities 15 days of flood defense Reconstructed levees : Only permanent monitoring no significant problems Old levees in Macva: flood defense measures applied, thousands of people involved Cities: insufficient height of key walls sand bags on top of structures 18

19 Sava river Flood defence in Macva Protection line levee 70 km long Possible overtopping of an old 9.5 km long levee along the Drina river Possible breach at the levee section where reconstruction was ongoing (red line) Possible overtopping of old levee sections (black line)

20 Sava river Flood defence in major cities Sremska Mitrovica 2014: 866 cm 1974: 800 cm Šabac 2014: 664 cm 1981: 590 cm Belgrade 2014: 586 cm 2006: 738 cm

21 Affected people, casualties and damage Affected people Evacuated Causalities 1.6 million 32,000 out of which 25,000 from Obrenovac 51 (23 drown) Total damage 1.52 billion

22 Sectors affected 24 municipalities TOTAL DAMAGE 1,525 mill Productive 1,063 mill the most affected Mining and Energy 488 mill Social 242 mill Housing 231 Infrastructure 192 mill Transport 167 Cross-Cutting 28 mill Environment 21

23 Lessons learned, immediately and long term activities - Study analisys of HM conditions, flood event, flod protection measures undertaken, existing flood protection level, flood consequences and damages,... with conclusions and recommendations - Setting the flood protection objectives and measures regarding lessons learned in the 2014 floods (Establisment of Water Management Strategy in procedure, end of 2014) - Flood Hazard Maps, Flood Risk Maps and Flood Risk Management Plans (for Sava river basin, transboundary cooperation through ISRBC) - Reconsidering and setting of the flood protection level

24 Lessons learned, immediately and long term activities Reconsidering of the measures integrated on the river basin level more room for rivers more retention areas (natural or small dams with reservoires on upstream part of river basin) anti-erosian works and measures river basin wide land use conditions and limits maintanance and reconstruction of the existing and construction of new flood protection structures second flood protection line and controlled flooding prioritization of measures, phases of implementation and reliably financing experts capacity building upgrading the intersectors, bilateral and regional cooperation promotion of public awarness and selfprotection measures

25 Thank you for your kind attention