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Delft University of Technology

1. Verschuren, Dionne (author). Effects of drought on the traffic capacity of the river Waal and the occurrence of congestion.

Degree: 2020, Delft University of Technology

<p class="MsoNormal">This research focuses on the impact of extreme low river discharges, meaning discharges below 1200 m2/s at Lobith. In 2018 extreme low river discharges in the river Rhine led to congestions in the main Dutch part, called the river Waal. The river Waal is an important river for inland navigation, but during low discharges the vessel draught reduces and consequently the transported cargo volume per shipment reduces. To compensate the loss of transport volume, the total number of shipments increases, leading to an increased traffic intensity on the river Waal.  The purpose of this study was to investigate the effects of extreme low discharges on the traffic flow and traffic capacity in the river Waal. The study consisted of two elements: a study combining fleet data and hydraulic information and a traffic simulation study. During this research IVS90 data was used as the source for inland waterway transport data. Based on literature and previous river Waal studies the river section between the Pannerdensche Kop and the Maas-Waal canal was selected as the river section to investigate in more detail. Multi-beam measurements in combination with water level data were used to generate cross-sectional profiles in order to carry out the simulations. The cross-sectional profiles were highly variable. From these cross-sectional profiles the navigable river width was determined. It was found that a river depth of 2.80 m was no longer available at all cross-sections from a discharge of 900 m2/s and lower. Therefore, the navigable width was determined at a river depth of 2.0 m for the discharges 1020, 900, 800, 700 and 600 m2/s. Also, it was found that with reducing discharge the navigable width of the cross-sections reduced.   The fleet composition was determined in detail for four weeks representing the drought of 2018. These four weeks in 2018 represented weeks with average discharges around 1020(2x), 800 and 700 m2/s. The river Waal fleet composition was determined based on the Rijkswaterstaat vessel classification system (RWS-class) and categorised in three groups: coupled units (all RWS-classes with index C), push-tow units (all RWS-classes with index B) and motorised vessels (all RWS-classes with index M). It was found that the number of passages by coupled units and push-tow units was effected largely during the drought of 2018. The number of passages by push-tow units reduced significantly from October 2018 as the discharge dropped below 1500 m2/s and the number of passages remained low until the discharge raise above the 1020 m2/s at the end of 2018. The number of passages by coupled units increased already before the discharge reached the 1020 m2/s limit and continued to increase throughout the period of drought. The number of passages by coupled units started to decline only after the discharge rose above the 1020 m2/s again. Even though the daily average number of passages increased during the drought of 2018, the total transported cargo volume per day decreased. There was a strong relationship… Advisors/Committee Members: van Koningsveld, M. (mentor), Verheij, H.J. (mentor), Hove, Dick ten (mentor), Koedijk, O.C. (graduation committee), Vinke, F.R.S. (graduation committee), Sloff, C.J. (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Waal; Drought; Congestion; Traffic capacity; Traffic flow; Economical impact; IWT; Inland Waterway Transport

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Verschuren, D. (. (2020). Effects of drought on the traffic capacity of the river Waal and the occurrence of congestion. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6a09cb68-b8e5-4278-84fd-97b5286a4b8e

Chicago Manual of Style (16th Edition):

Verschuren, Dionne (author). “Effects of drought on the traffic capacity of the river Waal and the occurrence of congestion.” 2020. Masters Thesis, Delft University of Technology. Accessed October 23, 2020. http://resolver.tudelft.nl/uuid:6a09cb68-b8e5-4278-84fd-97b5286a4b8e.

MLA Handbook (7th Edition):

Verschuren, Dionne (author). “Effects of drought on the traffic capacity of the river Waal and the occurrence of congestion.” 2020. Web. 23 Oct 2020.

Vancouver:

Verschuren D(. Effects of drought on the traffic capacity of the river Waal and the occurrence of congestion. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2020 Oct 23]. Available from: http://resolver.tudelft.nl/uuid:6a09cb68-b8e5-4278-84fd-97b5286a4b8e.

Council of Science Editors:

Verschuren D(. Effects of drought on the traffic capacity of the river Waal and the occurrence of congestion. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:6a09cb68-b8e5-4278-84fd-97b5286a4b8e

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