Case study:Oude Leij

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Location: 51° 30' 47.26" N, 5° 1' 16.08" E

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Project overview

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Status	In progress
Project web site
Themes	Habitat and biodiversity, Hydromorphology, Monitoring, Water quality
Country	Netherlands
Main contact forename	Martin
Main contact surname	Stamhuis
Main contact user ID
Contact organisation	Waterschap Brabantse Delta
Contact organisation web site	http://www.brabantsedelta.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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In the Oude Leij river, experiments are carried out with different techniques and frequencies of bank vegetation removal. The aim is to find out if a more extensive mowing regime can improve the river's ecological quality. To this end, the banks have been divided into 50 meter long blocks, in which vegetation is not removed for a period of one or two years. A block can be situated on just one side of the river or on both sides.

Monitoring surveys and results

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Due to maintenance problems, the block structure had to be adapted. It will therefore take longer for monitoring results to come in.

Lessons learnt

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Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Oude Leij WFD water body codes NL25_35 WFD (national) typology R4a WFD water body name Bovenloop Donge 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 Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category 0.1 - 1.0 m³/s Mean annual discharge (m3/s) 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