Transboundary cooperation in the flood forecasting and warning service within the international Morava river basin

Transcription

1 Transboundary cooperation in the flood forecasting and warning service within the international Morava river basin Workshop on transboundary issues Budapest Lucie Březková CHMI, regional office Brno

2 Morava River Basin Czech Republic Morava river basin Austria boundary area 2

3 View of the basin Area Total: km 2 CZ: km 2 Dyje: km 2 Important rivers March (Morava) Thaya (Dyje) Svratka Jihlava Bečva Reservoirs Vranov (101 mio m 3 ) Nové Mlyny (79 mio m 3 ) Polders Underneath Nové Mlýny 3

4 Floods in the Morava river basin Winter and spring floods (snowmelting) 1862, 1891, 2006 Summer floods 1883, 1930, 1938, 1997, 2002, 2010 Flash floods 1996, 2002, 2003, 2006 Ice floods Comparison of summer flood 2002, spring flood 2006 and flash flood 2006, gauge station Podhradí - Dyje 4

5 Floods in the Morava river basin Podhradí Dyje flash flood 2006 Raabs an der Thaya summer flood 2002 Dürnkrut - Morava spring flood

6 Arrangement of the international The bilateral agreements cooperation The exchange of all information related to flood protection and actual flood routing is realised by the Directivies for the forecasting, reporting and warning duty on the Czech-Slovak border waters and Czech-Austrian border waters Catchment (rivers) Riparian countries Treaties Year of establishment The Danube river basin (Morava) Czech Republic - Slovakia Treaty between the Government of the Czech Republic and the Governement of the Slovak Republic about cooperation on transboundary watercourses 1999 The Danube river basin (Dyje, Morava) Czech Republic - Austria Treaty between the Czechoslovak Socialist Republic and the Austrian Republic on regulation of water management issues related to border waters

7 Danube river basin ICPDR - International Commission for the Protection of the Danube River 7

8 Flood 2006 starting event for the closer cooperation between AT and CZ Gauge station Hohenau (Moravský Svätý Ján Slovakia) Morava river Q max = m 3.s -1 8

9 Conclusions The flood damages were estimated on 35 mil. Eur, there were large damages on the agricultural land due to flooding. Three people lost their lives during the flood. Lessons learned 60 % of the Dyje catchment above Vranov reservoir lies in Austria, cooperation with Austrian institutions must be improved. The permanent task is improving of the meteorological and hydrological forecasting and warning. 9

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11 Monitoring extension in the upper part of the Dyje river catchment in Austria constructs a new remote station with sensors for: - precipitation, air temperature and snow level Limbach equips the existing remote stations with additional sensors for: - snow level Waidhofen/Thaya Breitenfeld provides the with remote data: - precipitation, air temperature: Drasenhofen Geras Haugschlag Karlstift Messern - precipitation, air temperature and snow level: Breitenfeld Waidhofen/Thaya Limbach - stage and discharge: Raabs Schwarzenau Zwingendorf Bernhardsthal (depending on the agreement with Via Donau) - provides the CHMI with rating curves for gauging stations: Raabs Schwarzenau Zwingendorf 11

12 HYDROG in Czech Republic ODRA RIVER BASIN MORAVA RIVER BASIN 12

13 Precipitation 13

14 Data exchange between CZ and AT Exchange of precipitation, temperature and discharge data from the boundary area Czech Republic Austria 14

15 Forecasting of discharges web publication Czech Republic provide Austria with discharge forecast for Austrian watergauges Raabs and Schwarzenau. Czech Republic Austria 15

16 16 Feasibility study for the trilateral CZ-A-SK Project Výchozí situace The forecasting system was operated down to the gauge station Strážnice and inflows to the reservoir Nové Mlýny Nové Mlýny Strážnice Hohenau

17 17 Feasibility study for the trilateral CZ-A-SK Project The forecasting system was operated down to the gauge station Strážnice and inflows to the reservoir Nové Mlýny Nové Mlýny Strážnice Within the frame of he European Territorial Co-operation (AT, CZ) the Project Flood forecasting in the confluence area of the rivers Morava and Dyje was adopted. Model HYDROG was extended down to the profile Hohenau. Hohenau

18 18 Feasibility study for the trilateral CZ-A-SK Project The forecasting system was operated down to the gauge station Strážnice and inflows to the reservoir Nové Mlýny Nové Mlýny Strážnice Within the frame of he European Territorial Co-operation (AT, CZ) a project Flood forecasting in the confluence area of the rivers Morava and Dyje was adopted. Model HYDROG was extended down to the profile Hohenau. System was in test operation since February 2010 Hohenau Forecasts for the profile Hohenau (A), Moravský Sv. Ján (SK) on the river Morava have been daily disseminated since

19 Extension of the automatic monitoring 19

20 20 Scheme of forecast calculation ČHMÚ, Ostrava

21 21 Scheme of forecast calculation ČHMÚ, Ostrava P.M., Brno ČHMÚ, Brno Land NÖ: St. Pölten

22 22 Scheme of forecast calculation ČHMÚ, Ostrava P.M., Brno ČHMÚ, Brno Land NÖ: St. Pölten SHMÚ

23 23 Scheme of forecast calculation ČHMÚ, Ostrava P.M., Brno ČHMÚ, Brno Land NÖ: St. Pölten SHMÚ Hohenau

24 Lead time, run time interval Lead time 0-48 hours => for public In addition hours => only for the internal use all information as timeseries Q(t), W(t) Run time interval Normal situation 1 x daily (by 10:00 am) During the Flood the first calculation by 10:00 a.m. the next calculations when the circumstances change 24

25 The confluence area of the rivers Morava and Dyje 25

26 Flood event

27 Probabality forecast

28 Confluence of the Morava and Dyje rivers Povodí Moravy, s.p. 28

29 New gauge station for flood warning of Low Austria Final inspection of the station was on

30 Distinguished Service Gold Medal Low Austria 30

31 Thank you for your attention, Brno 31