Case study:Uiterwaardvergraving Keizers- en Stobbenwaarden en Olsterwaarden

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Location: 52° 16' 31.23" N, 6° 7' 32.53" E

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Project overview

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Status	Complete
Project web site	http://www.ruimtevoorderivier.nl/waar-doen-we-dit/projecten/overijssel/uiterwaardvergraving-keizers-en-stobbenwaarden-en-olsterwaarden/
Themes	Flood risk management, Habitat and biodiversity
Country	Netherlands
Main contact forename	Wim
Main contact surname	van Vilsteren
Main contact user ID
Contact organisation	Waterschap Groot Salland
Contact organisation web site	http://www.wgs.nl/veilige-dijken/ruimte-voor-de/deventer-ruimte-0/
Partner organisations	Natuurderij
Parent multi-site project	Case_study:Room for the River
This is a parent project encompassing the following projects	No

Munnikenhank (courtesy of Rijkswaterstaat)

Project summary

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For 7,5km along the IJssel river, more room for the river will be created in a number of locations, by digging away river foreland and creating side gullies. This will allow better and quicker drainage of large volumes of water, can contribute to creating more natural conditions.

For more information go to http://issuu.com/ruimtevoorderivier/docs/uiterwaardvergraving_deventer_kso (Dutch)

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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 Rhine River basin Rijndelta Subcatchment River name IJssel Area category more than 10000 km² Area (km2) Maximum altitude category 100 - 200 m Maximum altitude (m) Dominant geology Siliceous Ecoregion Central Plains Dominant land cover Intensive agriculture, Urban Waterbody ID Other case studies in this subcatchment: Vreugderijkerwaard side channel Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology 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 Dominant substrate River corridor land use Improved/semi-improved grassland/pasture Average bankfull channel width category more than 50 m Average bankfull channel width (m) 100100 m <br />0.1 km <br />10,000 cm <br /> 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