Case study:Osink-Bemersbeek

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Location: 51° 56' 9.69" N, 6° 46' 30.17" E

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity
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://www.wrij.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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The Osink-Bemersbeek is a tributary of the river Boven Slinge. It flows through a largely agricultaral area, with small patches of bank-lining vegetation. The stream yearly dries up in dry periods. The river system already has a rather good ecological quality, although it still suffers from a high nutrient load. The water authority plans to restore the entire river system to its fully meandering origins, with wide wooded buffer strips. In order to improve the ecological quality of this stream, more trees were planted on the banks and packages of dead wood were introduced by the side of the stream.

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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 Rijn River basin Rijndelta Subcatchment River name Oude IJssel Area category 1000 - 10000 km² Area (km2) 12001,200 km² <br />120,000 ha <br /> Maximum altitude category Less than 100 m Maximum altitude (m) Dominant geology Siliceous Ecoregion Central Plains Dominant land cover Grassland, Intensive agriculture (arable), Broadleaf/mixed woodland (semi natural), Urban Waterbody ID NL07_0006 Site Edit site Name Osink-Bemersbeek WFD water body codes NL07_0009 WFD (national) typology R5 WFD water body name Boven Slinge Pre-project morphology Straightened Reference morphology Actively 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 Grassland, Intensive agriculture (arable) Average bankfull channel width category Less than 2 m Average bankfull channel width (m) Average bankfull channel depth category Less than 0.5 m Average bankfull channel depth (m) Mean discharge category Less than 0.1 m³/s Mean annual discharge (m3/s) 0.030.03 m³/s <br />30 l/s <br /> Average channel gradient category Less than 0.001 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