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Project part-financed by the European Union (European Regional Development Fund)

The Interreg IVB North Sea Region Programme


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Management measures analysis and comparison

Authors:

by S. Saathoff, J. Knüppel, S. Manson & A. Boerema



10e. Assignment of collected measure examples from Weser, Elbe, Humber and Scheldt to measure categories

Table 52: List of measure examples collected, analysed and compared with indication of assigned measure category. Assignment was based on identification of main development targets per measure. Assignment was undertaken by members of the TWG Measures (expert judgment). Measures 1 and 13 are assigned to two different measure categories because respective development targets were weighted equally by TWG members.
No. Estuary Measure example Measure Category
Hydrology/Morphology Biology/Ecology Physical/Chemical Quality
01 Elbe Spadenlander Busch/Kreetsand x x  
02 Elbe Underwater relocation area ‚Medemrinne Ost‘ x    
03 Elbe Current deflection wall ´Köhlfleet´ x    
04 Elbe Study on ´Investigation on freshwater current direction control at Bunthaus and possible impact on sedimentation patterns in the Port of Hamburg´ x    
05 Elbe Sediment-Trap near Wedel x   x
06 Elbe Compensation channel ‘Hahnöfer Nebenelbe’   x  
07 Elbe Realignment Wrauster Bogen   x  
08 Elbe Compensation measure Hahnöfer Sand (2002)   x  
09 Elbe Spadenlander Spitze   x  
10 Elbe Settlement of reed at the harbour location´Haken´   x  
11 Elbe Land treatment of dredged material including MEchanical Treatment and Dewatering of HArbour-sediments (METHA)     x
12 Elbe Managing the ´Reiherstieg´ sluice to improve oxygen conditions     x
13 Scheldt Lippenbroek - flood control area with controlled reduced tide (FCA-CRT) x x  
14 Scheldt Groynes at Waarde   x  
15 Scheldt Ketenisse wetland - small scale tidal wetland restoration in the brackish part of the estuary   x  
16 Scheldt Paddebeek wetland- small scale tidal wetland restoration in the freshwater zone of the Seascheldt   x  
17 Scheldt Paardenschor- small scale brackish tidal wetland restoration in the Seascheldt   x  
18 Scheldt Heusden LO -small scale tidal wetland restoration in the freshwater zone of the Seascheldt   x  
19 Scheldt Schelde pilot project 2: Relocation of dredged sediment to deep areas of the navigation channel x    
20 Scheldt TIDE pilot: Relocation of dredged sediment to a shallow water area at the edge of the Walsoorden sandbar (2004) x    
21 Scheldt TIDE pilot: Relocation of dredged sediment to a shallow water area at the edge of the Walsoorden sandbar (2006) x    
22 Scheldt TIDE pilot: Relocation of dredged sediment to four shallow water areas at the edge of sandbars (2010) x    
23 Scheldt Vispaaiplaats – Fish spawning pond   x  
24 Weser Tegeler Plate- Development of tidally influenced brackish water habitats   x  
25 Weser Shallow water area Rönnebecker Sand   x  
26 Weser Tidal habitat Vorder- und Hinterwerder   x  
27 Weser Shallow water area Kleinensieler Plate   x  
28 Weser Cappel-Süder-Neufeld   x  
29 Weser TIDE pilot: Restoration of a dike foreland in Werderland – Feasibility study   x  
30 Humber Alkborough Managed Realignment and flood storage – Creation of ~440 a of intertidal habitat   x  
31 Humber Paull Holme Strays Managed Realignment – creation of ~80 ha of intertidal habitat   x  
32 Humber Hydromotion MudBug – determine the density of ‘fluid’ mud to determine the depth of the navigable channel (1250 kg/m³) x    
33 Humber Creation of ~13 ha of intertidal habitat at Chowder Ness   x  
34 Humber Creation of ~54 ha of intertidal habitat at Welwick   x  
35 Humber Kilnsea Wetlands   x  
36 Humber South Humber Gateway Roosting Mitigation   x  
37 Humber Training walls at Trent falls x    
38 Humber Donna Nook and Skeffling   x  
39 Humber Turnstall Realignment   x  



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Important to know

Reports / Measures / Tools

Report: Management measures analysis and comparison


Management issues

How and by which management measures can tidal amplification be reduced?
How can public acceptance for management actions be increased?
How can the Ecosystem Services Approach be used to support management decisions?
How can we assure accessibility to an inland estuarine port without affecting the habitats and safety against flooding?
How can we prevent excessive degradation or loss of tidal marshes?
How does habitat management affect the supply of ecosystem services?
What are the key areas of conflicts or synergies in TIDE estuaries?
What are the restoration opportunities for side branch systems and river banks (e.g. left side branch Weser)?
What factors determine the distribution of suspended sediments in an estuary?
What measures are successful for the dissipation of tidal energy?
What monitoring is required to support and assess management decisions?
What parameters should be used to define and evaluate measure targets?
What tool is available to help manage multiple users of a resource in an integrated way (i.e. achieving more holistic management)?
Which aspects do I have to take into account in order to make a measure a success?
Which measures are suitable to achieve specific ecological targets?
Which measures are suitable to achieve specific morphological and hydrological targets?
Which measures are suitable to identify, protect or develop valuable submerged habitats e.g. mussel beds and Sabellaria reefs?
Which measures are suitable to improve the physical characteristics and chemical water quality?
Which measures are suitable to provide ecosystem services and benefits?
Which synergistic effects and conflicts can be expected by planning and implementing a certain measure?
“Working with nature”: What are the opportunities for sediment management in estuaries?