Case study:Hunze bij Torenveen

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Location: 53° 0' 19.98" N, 6° 49' 38.38" 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, Water quality
Country	Netherlands
Main contact forename	Emiel
Main contact surname	Galetzka
Main contact user ID
Contact organisation	Waterschap Hunze en Aa's
Contact organisation web site	http://hunzeenaas.nl
Partner organisations
Parent multi-site project	Building with nature measures in streams
This is a parent project encompassing the following projects	No

Project picture

Project summary

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Vegetation removal in the stream has been minimized. Small patches of vegetation are removed when there is a risk of the stream getting blocked.

Monitoring surveys and results

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As a result of the measures, there is now a more varied fish population, with more species that prefer a slightly higher flow velocity. Erosion and sedimentation processes have caused a change in the stream profile. Locally, this change, in combination with increased vegetation coverage, has caused the bed to be too narrow to transport sufficient water. This has led to incision of the bed.

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Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Hunze WFD water body codes NL33HU WFD (national) typology R5 WFD water body name Hunze Pre-project morphology Straightened Reference morphology Actively meandering Desired post project morphology Actively meandering 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 Peat River corridor land use Intensive agriculture (arable), Rough unimproved grassland/pasture, Improved/semi-improved grassland/pasture, Wetland 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