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3a. Measure collection and compilation of basic information

The first working step consisted of collecting basic information on a set of chosen measures from the four TIDE estuaries. The measure compilation took place based on a measure category list structuring the range of possible development targets and therefore assuring a systematic compilation of examples (Table 2). The choice of examples to be included in the study (Table 4) was left to the respective TIDE estuary representative of the TWG (Table 1) provided that the examples were judged as well documented (e.g. by available monitoring results or modelling results) and educative in view of potential future measure planning and implementation processes.

Table 2: Measure categories and assigned development targets

Measure category	Development target
Biology/Ecology	Measure to develop and/or to protect specific habitats
	Measure to develop and/or to protect specific species
	Other measure to develop natural gradients and processes, transition and connection
	Measure to prevent introduction of or to fight invasive species
Hydrology/Morphology	Measure to reduce tidal energy, tidal range, tidal asymmetry and tidal pumping effects
	Measure for flood protection
	Measure to improve morphological conditions
	Measure to decrease the need for dredging
Physical/Chemical Quality	Measure to reduce pollutant loading (point and diffuse sources)
	Measure to reduce nutrient loading (point and diffuse sources)
	Measure to improve oxygen conditions
	Measure to reduce physical loading (e.g. heat input by cooling water entries)
	Other measure to improve self-purifying power

As a preparatory step of the subsequent measure analysis, a survey requesting fundamental and extended information on the selection of measure examples was developed and filled in by the members of the TWG (Table 3).

Table 3: Overview on fundamental and extended information requested in measure surveys

Fundamental information	Description of measure
	Location of measure
	Status of measure
	Legislative assignment of measure
	Cost estimation
Extended information	Monitoring
	Initial assessment of effectiveness and sustainability
	Assessment of conflict potential and synergistic effects
	Site selection criteria
	Lessons learned
	Additional materials

Table 4: List of measure examples and reference

1	Elbe	Spadenlander Busch/Kreetsand	HPA (2012a)
2	Elbe	Underwater relocation area ‘Medemrinne Ost‘	HPA (2012b)
3	Elbe	Current deflection wall ‘Köhlfleet‘	HPA (2012c)
4	Elbe	Study on ´Investigation on freshwater current direction control at Bunthaus and possible impact on sedimentation patterns in the Port of Hamburg´	HPA (2012d)
5	Elbe	Sediment-Trap near Wedel	HPA (2012e)
6	Elbe	Compensation channel ‘Hahnöfer Nebenelbe’	HPA (2012f)
7	Elbe	Realignment Wrauster Bogen	HPA (2012g)
8	Elbe	Compensation measure Hahnöfer Sand (2002)	HPA (2012h)
9	Elbe	Spadenländer Spitze	HPA (2012i)
10	Elbe	Settlement of reed at the harbour location ´Haken´	HPA (2012j)
11	Elbe	Land treatment of dredged material including MEchanical Treatment and Dewatering of HArbour-sediments (METHA)	HPA (2012k)
12	Elbe	Managing the ´Reiherstieg´ sluice to improve oxygen conditions	HPA (2012l)
13	Scheldt	Lippenbroek - flood control area with controlled reduced tide (FCA-CRT)	APA (2012a)
14	Scheldt	Groynes at Waarde	APA (2012b)
15	Scheldt	Ketenisse wetland - small scale tidal wetland restoration in the brackish part of the estuary	APA (2012c)
16	Scheldt	Paddebeek wetland- small scale tidal wetland restoration in the freshwater zone of the Seascheldt	APA (2012d)
17	Scheldt	Paardenschor- small scale brackish tidal wetland restoration in the Seascheldt	APA (2012e)
18	Scheldt	Heusden LO -small scale tidal wetland restoration in the freshwater zone of the Seascheldt	APA (2012f)
19	Scheldt	Schelde pilot project 2: Relocation of dredged sediment to deep areas of the navigation channel	APA (2012g)
20	Scheldt	TIDE pilot: Relocation of dredged sediment to a shallow water area at the edge of the Walsoorden sandbar (2004)	APA (2012h)
21	Scheldt	TIDE pilot: Relocation of dredged sediment to a shallow water area at the edge of the Walsoorden sandbar (2006)	APA (2012i)
22	Scheldt	TIDE pilot: Relocation of dredged sediment to four shallow water areas at the edge of sandbars (2010)	APA (2012j)
23	Scheldt	Vispaaiplaats – Fish spawning pond	APA (2012k)
24	Weser	Tegeler Plate- Development of tidally influenced brackish water habitats	Saathoff, S. ,M. Wernick. (2012)
25	Weser	Shallow water area Rönnebecker Sand	Saathoff , S. and J. Lange. 2012c
26	Weser	Tidal habitat Vorder- und Hinterwerder	Saathoff , S. and H. Klugkist. 2012
27	Weser	Shallow water area Kleinensieler Plate	Saathoff , S. and J. Lange. 2012b
28	Weser	Cappel-Süder-Neufeld	Saathoff , S. and J. Lange. 2012a
29	Weser	TIDE pilot: Restoration of a dike foreland in Werderland – Feasibility study	Saathoff , S. and D. Hürter. 2012
30	Humber	Alkborough Managed Realignment and flood storage – Creation of ~440 a of intertidal habitat	EA (2012a)
31	Humber	Paull Holme Strays Managed Realignment – creation of ~80 ha of intertidal habitat	EA (2012b)
32	Humber	Hydromotion MudBug – determine the density of ‘fluid’ mud to determine the depth of the navigable channel (1250 kg/m³)	EA (2012c)
33	Humber	Creation of ~13 ha of intertidal habitat at Chowder Ness	EA (2012d)
34	Humber	Creation of ~54 ha of intertidal habitat at Welwick	EA (2012e)
35	Humber	Kilnsea Wetlands	EA (2012f)
36	Humber	South Humber Gateway Roosting Mitigation	EA (2012g)
37	Humber	Training walls Trentfalls	EA (2012h)
38	Humber	Donna Nook and Skeffling	EA (2012i)
39	Humber	Tunstall Realignment	EA (2012j)

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