Open Days Brussels Workshops October 2008 Workshop 1: Will Our Generation be forgiven? Local Solutions to Global Problems – 7 October 2008 Flood Risk Management.

Präsentation zum Thema: "Open Days Brussels Workshops October 2008 Workshop 1: Will Our Generation be forgiven? Local Solutions to Global Problems – 7 October 2008 Flood Risk Management."—  Präsentation transkript:

1 Open Days Brussels Workshops October 2008 Workshop 1: Will Our Generation be forgiven? Local Solutions to Global Problems – 7 October 2008 Flood Risk Management – First Results for the Saxon Part of the Elbe River Basin Prof. Dr. Martin Socher Section Head Surface Water and Flood Protection Saxon State Ministry for Environment and Agriculture, Dresden, Germany

2 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 2 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 August 2002: Elbe and Eastern Ore Mountain Floods

3 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 3 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 August 2002: torrential rains in Bohemia/Ore Mountains of up to 340 mm per day (highest ever recorded values in daily precipitation for Germany) caused floods in the Elbe river and its tributaries unprecedented in written history in Saxony Losses and damages: 21 fatalities 25 000 houses, hospitals, kindergardens damaged (400 destroyed); 12 000 immediately affected enterprises; 740 km destroyed or heavily damaged roads; 20% destroyed or heavily damaged railway network; 466 destroyed or heavily damaged bridges; 280 damaged social facilities; 11% of all schools and 233 sports clubs damaged; 10% of all hospitals evacuated; Heavy damage affecting cultural facilities and monuments Overall damages: 6.2 billion Euro

4 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 4 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 Spring 2006 – Elbe Flood - Gohlis

5 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 5 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07

6 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 6 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 The implementation of this strategy is based on following pillars: 1.Sustainable reconstruction after the 2002 flood disaster by taking into account future flood protection requirements at this stage already. 2.Development and implementation of 1600 flood protection measures (FPM) and 547 hazard maps based Flood Protection Concepts (FPC) had to be elaborated (47 concepts in total including the Saxon part of the Elbe). Object category Reference value (recurrence interval in years) Closed settlements 100 Single buildings, not permanently inhabited settlements 25 Industry plants 100 Supraregional infrastructure 100 Regional infrastructure 25 Agricultural land 5 Special objects Case-by-case determination Natural landscapes -

7 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 7 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 3. Second Law Amending the Saxon Water Law of 09/08/2004 Main Content: (1) flood prevention and protection planning/river basin- based FPC, (2) special permitting conditions for construction measures in flood formation areas, (3) improved maintenance of dykes and reservoirs (4) Enhancement of public information on flood-prone areas, legal obligation to register such areas in the land register (5) hazard maps. 4. Saxon flood alert system - concentration of flood forecasting and flood alert messages at a single Landeshochwasserzentrum (State Flood Centre) - reorganisation of data and messages dissemination system - urging and assisting municipalities in establishing flood defence brigades.

8 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 8 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 Results of State-wide Prioritisation of Flood Protection Measures Category of PrioritisationCosts [ T ] High 1.181.982 Medium 583.971 Low 181.936 Total 1.947.889 Category of Prioritisation Number of Measures High 268 Medium 780 Low 548 Without Category 7 Total1.603 Distribution of number of measures 17% 49% 34% high mediumlow Distribution of investment demand 61% 30% 9% high mediumlow

9 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 9 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 Integrated Water Reservoir Management Flexibility between functions Seasonal flexibility Reaction on threats such as flood and drought Integration into larger schemes such as cascades, river basin management Integration of up-stream and down-stream interests Differentiation between strategic and operational time scale Multifunctional dams/reservoirs with adaptive management Functions:Hydropower, flood protection, fishery, water supply, tourism, navigation, ecology Adaptive Management:

10 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 10 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 New Flood Protection Measures … Flood Control Reservoir Lauenstein/Müglitz

11 Sächsisches Staatsministerium für Umwelt und Landwirtschaft Autor: Prof. Dr. Martin Socher/Elfie Defèr Folie 11 Referat: Oberflächengewässer / Hochwasserschutz 2008/10/07 Herzlichen Dank für Ihre Aufmerksamkeit! Thank you for your attention.