Sand Nourishment Strategy Development
in the (inter)national context
(WP 4)

Work Package 4 - Co-created strategies

Illustration by: Joost Fluitsma

WP 4 – Sand Nourishment Strategy Development in the (inter)national context

To establish an integral approach to co-design multifunctional coastal sand nourishments strategies

 

Start & end date

Year 1 – year 6

Work package leader

Deltares

Methodology

In this work package, a co-design approach is developed to apply the results of the other WPs in support of a multifunctional coastal sand nourishment strategy. The activities are grouped into three phases: 1) inception and situation analysis, 2) design & evaluation of nourishment strategies, and 3) prepare for implementation.

4.1 Inception and situation analysis (year 1-2)
We will identify objectives of future sand nourishment strategies with stakeholders in a workshop setting, using the societal challenges as a starting point (e.g. SLR, housing, recreation, biodiversity, drinking water). These will be translated into an evaluation framework (see e.g. Van der Werf et al., 2019b). To enable the uptake of multifunctional nourishment strategies, it is important to understand the current coastal zone management policies and the barriers and opportunities for multifunctional approaches. This will be done using in-depth interviews. In the first phase of the project, experience from other countries with multifunctional sand nourishment approaches are also collected. This is done with an online survey and desk study, using the international network of the consortium partners to learn from international projects and policies.

4.2 Design & evaluation of sand nourishment strategies (year 3-5)
We will facilitate the co-design process to design multi-functional coastal nourishment strategies with help of the serious game developed in WP 3.1. Input for this co-design process are the set of objectives (Task 4.1) and physical, ecological, social and economic system understanding generated in WPs 2 and 3. The co-design communities consist of both consortium partners and stakeholders (science, policy, industry and society). The output will be a set of multifunctional coastal nourishment strategies (described in text and in visuals), that are created and supported by the partners and stakeholders involved. We evaluate these nourishment strategies using the evaluation framework (Task 4.1). The long-term effectiveness of the sand nourishment strategies is assessed under different scenarios for climate change and socio-economic developments. The effects on coastline erosion, ecology, recreation will be assessed using the results from WPs 2 and 3. In addition, effect of nourishment strategies on coastal groundwater dynamics is assessed using expert judgment.

4.3 Prepare for implementation (year 6)
It is a large shift to change the current practice of coastal sand nourishment strategies to a multifunctional strategy that is designed with a wide range of policy-makers and stakeholders. Here, we identify the next steps to implement the results from SOURCE in the Dutch national policies. In this task we will also expose the knowledge and tools developed in SOURCE into an international context, investigating the applicability in contrasting coastal environments. This activity consists of collaborative case-studies with international scientific and engineering partners to identify (international) differences in: (i) prevalent coastal dynamics, e.g. wave climate; (ii) feasibility of nourishment strategies, e.g. due to sand supply limitations; and (iii) socio-economic settings in relation to stakeholders, planning and cost-benefit analyses.

Description of research activities

Task 4.1: Inception and situation analysis
Task 4.2: Design & evaluation of sand nourishment strategies
Task 4.3: Prepare for implementation

Productive interactions (co-design and co-creation)

As WP 4 is the overarching, integrating work package of the SOURCE project, all researchers and partners will be involved.

Especially the regional and national coastal managers (Rijkswaterstaat, STOWA, HHNK, Gebiedsoverleg Zuidwestelijke Delta, Province Zeeland, Waterschap Scheldestromen) and nature conservation organizations (Dunea, Stichting de Noordzee, Waddenvereniging) play in key role in the co-design and evaluation of sand nourishments strategies. The exploration of the possibilities for a recreational nourishment in Zeeland with the partner Recreatief Zandfonds in WP 1 will especially input possible nourishments strategies (Task 4.2) and how to implement these (Task 4.3). The other knowledge (Waddenacademie) and industry partners (Arcadis, RHDHV, Svašek, Van Oord, Waardenburg Ecology, WaterProof, Witteveen+Bos) will be mostly involved to provide the required input to design & evaluate nourishment strategies.

The experience from other countries with multifunctional sand nourishment approaches, and the exposure of the knowledge and tools developed in SOURCE into an international context (Tasks 4.1 and 4.3) will be carried out with the SOURCE partners from Belgium (Flanders Hydraulics), Portugal (University of Aveiro), England (CEFAS) and USA (the firms CPE & CSE; US Army Corps of Engineers).

The required knowledge on the coastal ecosystem and socio-economic system, respectively, will come from WPs 2 and 3.3. More, specifically this includes expert judgment and predictive modeling of nourishment impacts (WPs 2), the interactive serious game to experience nourished coastal landscapes (WP 3.1), the perception of spatial quality (WP 3.2) and the social-cost benefit analysis as developed in WP 3.3.

Contribution to project (impact)

This WP will develop an integral approach to co-design multifunctional coastal sand nourishments strategies to enable resilient dynamic coastal landscapes (Scientific breakthrough, Output). This is key input to develop and implement coastal policy (Outcomes), in order to carefully design and plan coastal nourishments for the multifunctional coastal landscapes of the future (Impact).

Key results

[Here the key results of this WP will be presented.]