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Climate resilient water system in Haarlo-Olden Eibergen : a design study

Hagedoorn, L.A.G. (2021) Climate resilient water system in Haarlo-Olden Eibergen : a design study.

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Abstract:Background information: In the coming decades, the world will undergo climate change. This climate change will result in a change in freshwater availability. The availability of freshwater in the Netherlands is crucial since many economic sectors are dependent on freshwater. To cope with climate change, we must work on climate adaptation: preparing our country for changing circumstances. According to the Delta Programme, the goal is that in 2050 the Netherlands is resilient against freshwater shortages. Similarly to the entire Netherlands, the management area of Waterboard Rijn and IJssel face climate change and water shortages. The Berkel is one of the five catchment areas of WRIJ. Within the Berkel catchment area, drinking water extraction locations are located. The extraction of water takes place from groundwater and results in a declination of the groundwater table. Water from the Berkel is supplied to decrease the declination of the groundwater table and to provide enough freshwater. However, the water in the Berkel is polluted by five small wastewater treatment plants located in Germany. This study focuses on the area Haarlo-Olden Eibergen, located in the Berkel catchment area. The water system in the area is designed such that water is quickly drained for agriculture. Together with climate change, this results in desiccation in the area. In addition, even more desiccation than only caused by climate change is caused by the declination of the groundwater table since drinking water is extracted in the area. Due to contamination by the effluent of wastewater treatment plants and the leaching of pesticides and nutrients, the water quality in the area Haarlo-Olden Eibergen is not sufficient. The contamination concentrations in the groundwater are a problem for the extraction of drinking water as well as for other functions in the area such as nature. It is not easy to come to a solution to decrease the desiccation in an area, to maintain good water quality and at the same time as obtain the goal to be climate resilient by 2050. An integrated approach is needed for the challenge of solving the aforementioned problems. The research objective and method: The objective of this research is to ‘design a climate resilient water system for the area Haarlo-Olden Eibergen by re-designing the current water system’. To design a climate resilient water system, this research adopts a design science methodology. In this design science methodology, three design phases are distinguished: the problem investigation phase, the design phase and the validation phase. The problem investigation is divided into four parts: 1) problem introduction; 2) system analysis, 3) stakeholder analysis; and 4) preparing a list of requirements for the new design. Interviews and focus group sessions are used to formulate the problem from the perspective of the stakeholders. In the design phase, the current water system is re-designed and in the validation phase, the re-design is validated. There are two different validations during this study, first, the design is validated during designing by expert judgement of the researcher herself and finally, the re-design is validated with the key stakeholders.
Item Type:Essay (Master)
Waterschap Rijn en IJssel, The Netherlands
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Construction Management and Engineering MSc (60337)
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