Case study:Beneden-Berkel

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Location: 52° 9' 15.66" N, 6° 17' 50.82" E

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Project overview

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Status	In progress
Project web site	http://www.wrij.nl/thema'/actueel/projecten/berkel-almen/
Themes	Habitat and biodiversity, Land use management - agriculture, Water quality
Country	Netherlands
Main contact forename	Ellen
Main contact surname	Bollen-Weide
Main contact user ID
Contact organisation
Contact organisation web site	http://www.wrij.nl/
Partner organisations	Provincie Gelderland
Parent multi-site project
This is a parent project encompassing the following projects	No

Fishpass on the Beneden-Berkel project (courtesy of Waterschap Rijn & IJssel)

Project summary

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Since the Middle Ages man has been altering the Berkel. At first to make it navigable and from the 1930's onwards to reduce flooding. Over the years the Berkel has thus been modified into a straight monotonous river. Now, some of the natural characteristics of the area will be restored. This will allow many more species of plants and animals to live in and around the Berkel, and the water becomes cleaner.

The measures that will be taken are:

• remeandering and introduction of woody debris to create more variety in stream flow, water depth and plant growth;
• cascading fish passages will be made on the Besselink and Warken dams;
• land consolidation, to move production lands away from the low lying (thus wet) river banks, and closer to the farms, thus reducing distance travelled by farmers;
• a swimming pool and a walking path will be made, in order to better facilitate recreation.

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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 Site Edit site Name Beneden-Berkel WFD water body codes WFD (national) typology R6 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 Artificially regulated Dominant substrate Clay, Sand River corridor land use Improved/semi-improved grassland/pasture Average bankfull channel width category 10 - 50 m Average bankfull channel width (m) 12,5",5" is not declared as a valid unit of measurement for this property. Average bankfull channel depth category 0.5 - 2 m Average bankfull channel depth (m) 22 m <br />0.002 km <br />200 cm <br /> Mean discharge category 1 - 10 m³/s Mean annual discharge (m3/s) 33 m³/s <br />3,000 l/s <br /> Average channel gradient category Less than 0.001 Average channel gradient 0,00022"22" can not be assigned to a declared number type with value 0. Average unit stream power (W/m2) "Expression error: Unexpected < operator." is not a number. Project background Edit project background Reach length directly affected (m) Project started 2013/09/01 Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Waterschap Rijn & IJssel, Provincie Gelderland 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