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Discharge measurements at bypass in Genk and Postels vaartje and watercapture 33B in Lommel: control of theoretical discharges
Vereecken, H.; Claeys, S.; Deschamps, M.; Mostaert, F. (2017). Discharge measurements at bypass in Genk and Postels vaartje and watercapture 33B in Lommel: control of theoretical discharges. Version 4.0. FHR reports, 17_071_2. Flanders Hydraulics Research: Antwerp . VII, 15 + 38 p. appendices pp.
Part of: FHR reports. Flanders Hydraulics Research: Antwerp, more
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Document type: Project report
Keywords
    Culverts
    Discharge
    In-situ measurements
    Low water
    Water management > Monitoring-networks > Discharges
    Water management > Risk > Low water strategies
    Water management > Water quantity > Water balance - Water availability
    Water management > Water quantity > Water system knowledge
Project Top | Authors 
  • Meetcampagne laagwater op kanalen ikv laagwatermodellering, more
Contact details

Proposer: Ministerie van Infrastructuur en Waterstaat; Rijkswaterstaat (RWS), more
Proposer: Vlaamse overheid; Beleidsdomein Mobiliteit en Openbare Werken; Waterwegen en zeekanaal NV (W&Z), more

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Abstract
    In the scope of the International Meuse Commission, Flanders Hydraulics Research (FHR) is contributing to a low water measuring campaign on the watersystem of river Meuse at the Flemish border with the Walloon region and the Netherlands. The goal of this study is to quantify the amount of water that flows through the bypass in Genk on the Albert canal. Also in Lommel, upstream of sluice 1, the flow to Postels Vaartje and water capture 33b has to be quantified.

    The detailed amount of flow through the bypass in Genk is measured with Rio Grande ADCP upstream at the entrance the inlet. The results of these measurements are compared with theoretical discharges used by the water managers of de Vlaamse Waterweg nv (dVW).

    The quantity of the flow towards "Postels Vaartje" and "water capture 33b" is measured with Streampro- ADCP. For Postels Vaartje the measurements have been executed from the bridge 80m downstream and downstream and close to the inlet. For watercapture 33b Streampro is operated from a bridge 10 m downstream of the inlet.

    Results of the measurement in Genk indicate that the theoretical discharges are not reached and are overestimated by 10-70 % at the tested opening diameters.

    Results of the measurement at Postels Vaartje show discharges from 0,19 to 0,77 m3/s at the different opening heights tested. Results of measurements of watercapture 33b show discharges of about 0,11 m3/s. Both results are comparable with discharge measurements with Qliner ADCP at the same locations in 2005.

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