Case study:Oostrumsche Beek

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Location: 51° 32' 6.47" N, 6° 1' 50.12" E

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Project overview

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Status	In progress
Project web site
Themes	Environmental flows and water resources, Habitat and biodiversity, Hydromorphology, Monitoring
Country	Netherlands
Main contact forename	Arnoud
Main contact surname	Soetens
Main contact user ID
Contact organisation	Waterschap Limburg
Contact organisation web site	http://waterschaplimburg.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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The Oostrumsche Beek is a meandering stream with a low flow velocity on a sandy substrate. It features sand bars and overhanging banks. The large number of trees on the banks influence the planform of the river and cause an accumulation of leaves and branches in the calmer parts of the stream. Part of the original bed has been closed off, forcing the stream into a wooded area. Upstream and downstream of this section, dead wood fragments have been introduced.

Monitoring surveys and results

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After the changes to the streambed, several new plant species appeared in the area. Several trees in the wooded area died. However, it is difficult to say which of these changes can be attributed to the experiment and which were caused by a beaver building a dam at the same time. There have also been small changes to the macroinvertebrate community, but no significant changes to the diversity in taxa or to the macroinvertebrates' total abundance. Longer measurements are needed to assess the effect on hydrology and morphology.

Lessons learnt

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Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Oostrumsche Beek WFD water body codes NL57_Oost WFD (national) typology R5 WFD water body name Oostrumsche Beek 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 Sand River corridor land use Broadleaf/mixed woodland (semi natural), Intensive agriculture (arable), Grassland 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 Supplementary Information Edit Supplementary Information