Case study:Beekherstel Zuidelijk Afwateringskanaal

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Location: 52° 10' 46.91" N, 6° 31' 44.65" E

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Project overview

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Status	In progress
Project web site
Themes	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://www.wrij.nl/
Partner organisations	STOWA
Parent multi-site project	Building with Nature
This is a parent project encompassing the following projects	No

Capelle Sluisbrug over het Zuidelijke Afwateringskanaal

Project summary

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The Zuidelijk Afwateringskanaal water body is classified under the WFD system as M1a: buffered ditches. The entire water body is managed by water authority Rijn en IJssel. The Zuidelijk Afwateringskanaal is partly located in the province of Gelderland (municipality Berkelland) and partly in the province of Overijssel (municipality Hof van Twente). The water body is 10.7 km long and has a catchment of 4449 hectares. The Zuidelijks Afwateringskanaal is an engineered waterway. It discharges into the Twentekanaal. Water levels are managed with four adjustable weirs (one automatic) and five fixed weirs. None of these weirs are passable for fish. In this water body, a single minimal water level is pursued for each managed stretch, for which the weirs are used. The water body does not carry water all year long. In dry periods, the 24 upstream stretches of the water body run dry. The Zuidelijk Afweteringskanaal is mostly there for drainage. Water is being let into the water body from the Bolksbeek in dry periods. There are no sewage treatment plants present in this catchment.

The water authority adapted its mowing regime in this stream to main channel mowing, mainly to get more experience with this vegetation removal strategy.

Monitoring surveys and results

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Backwater effects and vegetation regrowth are being monitored. Results are not yet known.

Lessons learnt

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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 Schipbeek Area category 100 - 1000 km² Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) 2323 m <br />0.023 km <br />2,300 cm <br /> Dominant geology Siliceous Ecoregion Central Plains Dominant land cover Intensive agriculture (arable), Plantation forestry, Grassland Waterbody ID NL07_0028 Other case studies in this subcatchment: Beekherstel Buurserbeek, Traditioneel Beekherstel Koffiegoot Site Edit site Name Zuidelijke Afwateringskanaal WFD water body codes NL07_0026 WFD (national) typology M1a WFD water body name Pre-project morphology Artificial channel Reference morphology Desired post project morphology Heavily modified water body No 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, Irrigated land, Plantation forestry Average bankfull channel width category 2 - 5 m Average bankfull channel width (m) 3.913.91 m <br />0.00391 km <br />391 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) 1.941.94 m³/s <br />1,940 l/s <br /> Average channel gradient category Less than 0.001 Average channel gradient 0.00045 Average unit stream power (W/m2) 2.18964475703322.19 W/m² <br /> Project background Edit project background Reach length directly affected (m) Project started 2017 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 Width & depth variation, Flow velocities, Continuity for organisms Biology Fish, Invertebrates Physico-chemical Oxygen balance, PH, Temperature Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Stroombaanmaaien 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 Width & depth variation Yes Yes No No No Improvement Flow velocities Yes Yes No No No Improvement Substrate conditions 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 Improvement Invertebrates Yes Yes No No No Improvement 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 Oxygen balance Yes Yes No No No Improvement PH Yes Yes No No No Improvement Temperature Yes Yes No No No Improvement 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 Improvement 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