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The impact of vegetation configurations on the hydraulic roughness : using Delft3D to gain knowledge for the maintenance of lowland streams in the Netherlands

Rotteveel, M.R. (2018) The impact of vegetation configurations on the hydraulic roughness : using Delft3D to gain knowledge for the maintenance of lowland streams in the Netherlands.

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Abstract:Waterboards maintain their lowlands streams by mowing to ensure the conveyance capacity for the normative event of a return period of 10 years. The set up of the corresponding maintenance plan is based on empirical knowledge and available equipment. The Waterboards boards, especially the Waterboard Aa & Maas, aim to make their maintenance more cost-coefficient and aim to consider the impact of different approaches of maintenance on the ecological value. Therefore, this Waterboard aims to expand the knowledge of the quantify the decrease of conveyance capacity by different amount of vegetation in different patterns over the stream. To obtain more information a cooperation of knowledge institutes and Waterboards is formed, this topic and this thesis are part of this cooperation, named the Lumbricus project. This research is done as part of the Lumbricus project and has the objective to investigate the relation between vegetation characteristics and configurations and the hydraulic parameters i.e. water levels, velocities and roughness in lowland streams with Delft3D and the Dotter model to expand the knowledge which can be used to set up mowing strategies of Waterboards.
Item Type:Essay (Master)
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Civil Engineering and Management MSc (60026)
Link to this item:http://purl.utwente.nl/essays/76616
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