Case study:Vlier

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Location: 51° 28' 34.26" N, 5° 46' 43.73" E

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Project overview

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Status	In progress
Project web site
Themes	Habitat and biodiversity, Monitoring, Water quality
Country	Netherlands
Main contact forename	Bram
Main contact surname	Spierings
Main contact user ID
Contact organisation	Waterschap Aa en Maas
Contact organisation web site	http://www.aaenmaas.nl
Partner organisations
Parent multi-site project	Building with nature measures in streams
This is a parent project encompassing the following projects	No

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Project summary

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In the Vlier, two experiments were performed to assess the effect of vegetation removal in blocks on stream ecology.

Monitoring surveys and results

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Cessation of vegetation removal led to an extended vegetation cover in the first year after implementation of the measure. Submerged vegetation and floating vegetation expanded more than riparian vegetation.

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Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Meuse River basin Maas Subcatchment River name Aa (Noord-Brabant) Area category 100 - 1000 km² Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) Dominant geology Siliceous Ecoregion Western Plains Dominant land cover Grassland, Intensive agriculture (arable), Broadleaf/mixed woodland (semi natural), Urban Waterbody ID NL38_1H Other case studies in this subcatchment: Snelle Loop Site Edit site Name Vlier WFD water body codes NL38_4E WFD (national) typology R4 WFD water body name Bakelse Aa, Oude Aa en Kaweise Loop Pre-project morphology Straightened Reference morphology Low gradient passively meandering Desired post project morphology Straightened Heavily modified water body Yes National/international site designation Local/regional site designations Protected species present No Invasive species present No Species of interest Dominant hydrology Dominant substrate Sand River corridor land use Intensive agriculture (arable) Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Stakeholder engagement and communication Works and works supervision Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit Physico-chemical quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Any other monitoring, e.g. social, economic Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information