Challenges and Visions for the Elbe Estuary from a User`s Perspective SedNet Conference 2009/Oct/9

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1 Challenges and Visions for the Elbe Estuary from a User`s Perspective SedNet Conference 2009/Oct/9 Heinz Glindemann, Hamburg Port Authority

2 Dredged Material [m 3 ] Headwater Discharge [m 3 /s] Dredged Material Hamburg Development of Dredged Material within the Port and the River Elbe in Hamburg Sand Relocation to North Sea Land Treatment Dredged Material in Sum Relocation in Hamburg Headwater S. 2

3 3D-Simulation: Flood-/Ebb current Dominance S. 3

4 Hydrodynamic Changes S. 4

5 Changing Water Level over the past 100 Years mthw and mtlw 1900 Waterlevel 1900 mthw and mtlw 2000 Waterlevel today S. 5

6 Sea Level Rise Sea level Rise [m] S. 6

7 Changes in Tidal Amplitude Changes in Tidal Amplitude at Helgoland and Cuxhaven between 1947 and 2000 (Jensen, fwu) Helgoland* Island Cuxhaven* Coast * ergänzt d. Strotmann, HPA S. 7

8 Discharge Headwater Discharge Timescale S. 8

9 The Port of Hamburg 2nd in Europe (TEU) Jobs 9.9 Mio. TEU in 2007 Forecast of 18 Mio. TEU in 2015 Fairwaydepth 12,50/13,50m Deepening proposed to 14,5m HPA-Tasks: Maintenance of Port Infrastructure and Waterways in Hamburg Ensuring competitivness for the Future S. 9

10 Multiple Uses Nature Protection Traffic and Economy Flood Risk Management Tourism Fishery S. 10

11 Competent Authorities Fischerei und Landwirtschaft Naturschutz S. 11

12 2006: Cornerstones of the Concept for the Tidal River Elbe Das Tideelbekonzept Three Cornerstones for a future action plan: 1. Attenuation of the Tidal Energy through River Engineering in the Mouth of the Estuary, 2. More Room for the River (Tidal Volume) between Glückstadt and Geesthacht 3. Optimisation of the Sedimentmanagement considering the whole System of the Elbe S. 12

13 Tidal Elbe Today S. 13

14 Tidal Elbe tomorrow S. 14

15 New Sand-Banks within the Mouth S. 15

16 Geological Model of the Mouth Süd Nord Elbe Holocene Pleistocene Tert S. 16

17 Moderation of the Tidal Range Shallow Water = Tidal Volume = Volume between High Tide and Low Tide Best Effect around Hamburg 1 Mio m 3 Tidal Volume = 1cm Raising of Tidal Low Water Delayed Discharge and High FGriction wanted (Spongeeffect) Additional Tidal Volume mthw before mtnw Tidal Potential after S. 17

18 Pilot Project Spadenlander Busch / Kreetsand former flushing field Approx. 42 ha realigned since 1999 mean surface level +5,50 mnn S. 18

19 Pilot Project Spadenlander Busch / Kreetsand former flushing field Approx. 42 ha realigned since 1999 mean surface level +5,50 mnn S. 19

20 Scenarios for new Tidal Areas in Hamburg Re-Connection of Alte Süderelbe Mud Removal in Speicherstadt and Oberhafenkanal Mud Removal in Spreehafen Connection of Neuländer Quarry Pond Realignment Spadenlander Ausschlag New Tidal Volume at Spadenlander Busch Polder Altes Feld Re-Connection of Hohendeicher See Mud Removal in Billwerder Bucht and Tidekanäle Conection of Quarry Pond via Tidekanal Connection of Waterworks Billwerder Insel Re-Connection of Doveelbe S. 20

21 Adapted Relocation Strategy S. 21

22 Integrierted Management Plan Elbe Estuary Steering by Natura2000-Stearing Group Working Group and Consultants Stakeholder in Planing Groups Integrating of Sediment Management by WSV und HPA Integrierted Managementplan Elbe Estuary S. 22

23 River Elbe still is not clean enough! 700 Hamburg Elbe catchment Oste 600 Elbe Elde Stettin Bremen Hannover Jeetzel Ohre Magdeburg Dosse Havel Berlin Spree PL Study on Sediment contamination in Elbe Catchment (BIS, 2005) D Bode Unstrut Ilm Saale Saale 300 Mulde Weiße Elster 200 Elbe Freiberger Mulde Zwickauer Mulde Schwarze Elster 100 Dresden 0 Labe -100 Jizera -300 Study on Pollutants (BIS, 2007) Ohre Vltava Labe W N S E D Berounka Otava Vltava Prag Luznice -200 Sázava CR Sedimentmanagement in the Context of European WFD and Marine Protection Rene Schwartz, TUHH S. 23

24 Relocation Strategy Morphology, Fish Oxygen Oxygen, Nutrients Locations of considered Relocation Sites 1-4 for Dredged Material from Wedel Pollutants, Ecotox., MZB BfG-1584: Systemstudie Tideelbe S. 24

25 Climate Change: River Engineering and Flood Risk Management 1. Normal Wirtschaft Tide und Verkehr Naherholung und Tourismus Current Situation With adittional Tidal Area And submerged Shutter at normal Tide Fischerei und Landwirtschaft Naturschutz S. 25

26 Climate Change: River Engineering and Flood Risk Management 2. Storm Wirtschaft Surge und Verkehr Naherholung und Tourismus Today In Future? Storm Surge Polder: Shutter is raised until shortly before the Peak of the Surge Storm Surge Polder: Shutter is lowered shortly bevor Peak of the Surge Fischerei und Landwirtschaft Naturschutz S. 26

27 Scenarios for the next 100 Years Principal sketch: Haseldorfer Marsch Tidal Polder S. 27

28 Storm Surge Polder: Scenario Haseldorfer Marsch IMS-Study: The storm surge polder has an area of 570 ha and a volume of 27 Mio. m³. The flooding begins three hours before surge maximum. This will reduce the surge for about 10 cm in Hamburg S. 28

29 Theoretically Flooded Areas for 5 and 10 m Sea Level Rise S. 29

30 Moderation of the Tide by Polar Ice? S. 30

31 Scenarios S. 31

32 Profiles of the German West Coast Tendencies of the last 6000 Years Landelijke Vereniging tot Behoud van de Wattenzee S. 32

33 International Exchange (Interreg IVB) S. 33

34 Tidal Elbe River in the www S. 34

35 Pilot Project Spadenlander Busch / Kreetsand S. 35

36 Thank You for Your Atention!

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