Case study:Ontpoldering Noordwaard

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Location: 51° 46' 27.32" N, 4° 46' 22.84" E

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Project overview

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Status	In progress
Project web site
Themes	Flood risk management, Habitat and biodiversity, Social benefits
Country	Netherlands
Main contact forename	Rijkswaterstaat Realisatieteam West
Main contact surname	Rijkswaterstaat Realisatieteam West
Main contact user ID
Contact organisation	Rijkswaterstaat Realisatieteam West
Contact organisation web site	http://www.ruimtevoorderivier.nl/waar-doen-we-dit/projecten/noord-brabant/ontpoldering-noordwaard/
Partner organisations	Provincie Noord-Brabant, Gemeente Werkendam, Waterschap Rivierenland
Parent multi-site project	Case_study:Room for the River
This is a parent project encompassing the following projects	No

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Project summary

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By lowering dykes and moving dykes land inward, larger parts of the Noordwaard will be subject to flooding, thereby allowing more water from the Nieuwe Merwede river to flow to sea during high water events. When the works on the dykes have been completed the area will flood at least several times per year, particularly in winter. A number of building in the area will therefore be placed on terps. Land outside the new flood areas will stil be arable.

This results in 30 cm. lower water levels at the town of Gorinchem. Nature benefits as well, also this area borders on the Biesbosch, thus expanding the surface of this natural estuarine area.

As the area will be open for public there are also new opportunities for walking, cycling, canooing.

More information can be found at http://issuu.com/ruimtevoorderivier/docs/ontpoldering_noordwaard (in Dutch)

REFORM offers more science oriented information at http://wiki.reformrivers.eu/index.php/Rhine_-_Ontpoldering_Noordwaard.

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Catchment and subcatchment Select a catchment/subcatchment 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 National/international site designation Local/regional site designations Protected species present Invasive species present Species of interest Dominant hydrology Dominant substrate River corridor land use 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 http://issuu.com/ruimtevoorderivier/docs/ontpoldering noordwaard More information can be found at: http://wiki.reformrivers.eu/index.php/Rhine - Ontpoldering Noordwaard REFORM offers more science oriented information at: Supplementary Information Edit Supplementary Information