Case study:Beekherstel Buurserbeek

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Location: 52° 8' 10.28" N, 6° 42' 34.15" E

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Project overview

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Status	Complete
Project web site
Themes	Environmental flows and water resources, Flood risk management, Habitat and biodiversity, Monitoring
Country	Netherlands
Main contact forename	John
Main contact surname	Lenssen
Main contact user ID
Contact organisation	Waterschap Rijn en Ijssel
Contact organisation web site	http://https://www.wrij.nl/
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This is a parent project encompassing the following projects

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Project summary

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Het huidig beeld van de Buurserbeek is een langzaam stromende, sterk genormaliseerde beek. De beek ligt voor een deel in agrarisch gebied maar voor een belangrijk deel stroomt de beek ook door bossen of natuurgebieden (Bijvoorbeeld Buurserzand en de bossen ten oosten van Haaksbergen) of is begroeid met houtige gewassen op de oevers. Langs nagenoeg de gehele beek ligt aan weerszijden een 4m breed onderhoudspad en de beek ligt over de gehele lengte tussen kades of hoge gronden. Stroomopwaarts van de Twenteroute heeft de beek heeft nagenoeg het gehele jaar afvoer en op de meeste plekken is de stroomsnelheid nu voldoende voor stroming-minnende soorten. Stroomafwaarts van de Twenteroute valt de afvoer ’s zomers grotendeels weg waardoor de beek stil komt te staan. Het onderhoud is nog intensief op de tracés benedenstrooms van Braambrug. De Buurserbeek voldoet nog niet aan de gestelde ecologische doelen. De beek is te diep en er is te weinig structuurvariatie. Nutriëntgehalten zijn ook nog te hoog in de Buurserbeek. Dit wordt voornamelijk veroorzaakt door afwenteling vanuit Duitsland.

Binnen de kades heeft de beek ruimte voor vrije meandering. De beek is ondiep en breed en heeft een afwisseling van zandbanken en stroomkuilen met dood hout en plaatselijk een weelderige vegetatie van water- en oeverplanten. Het grootste deel, ca. 80% van het beektraject is bebost. De Buurserbeek is geheel optrekbaar voor vis.

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Buurserbeek WFD water body codes WFD (national) typology R5 WFD water body name Pre-project morphology Sterk veranderend Reference morphology Desired post project morphology 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 Artificially regulated Dominant substrate Sand, Musselkalk, dekzand/keileem River corridor land use Intensive agriculture (arable), Plantation forestry Average bankfull channel width category 5 - 10 m Average bankfull channel width (m) 66 m <br />0.006 km <br />600 cm <br /> Average bankfull channel depth category 0.5 - 2 m Average bankfull channel depth (m) 0.80.8 m <br />8.0e-4 km <br />80 cm <br /> Mean discharge category 1 - 10 m³/s Mean annual discharge (m3/s) 1.411.41 m³/s <br />1,410 l/s <br /> Average channel gradient category more than 0.1 Average channel gradient 0.74 Average unit stream power (W/m2) 8.27 * 10^-4 "*10^-4" is not declared as a valid unit of measurement for this property. Project background Edit project background Reach length directly affected (m) 1620016,200 m <br />16.2 km <br />1,620,000 cm <br /> Project started 2015 Works started Works completed 2015/12/31 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 Barriers to fish migration Hydromorphology Flow velocities, Width & depth variation Biology Fish, Invertebrates Physico-chemical Temperature, PH, Oxygen balance, Nutrient concentrations Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Vergraven van de oever Floodplain / River corridor Planform / Channel pattern Other Dood hout inbreng 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 Substrate conditions Yes Yes No No No Improvement Flow velocities Yes Yes No No No Improvement Width & depth variation Yes Yes No No No Improvement Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Fish Yes Yes No No No Invertebrates Yes Yes No No No 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 Temperature Yes Yes No No No PH Yes Yes No No No Oxygen balance Yes Yes No No No Nutrient concentrations Yes Yes No No No 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 Concentration phosphate, Chloride and Nitrogen Yes Yes No No No 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