Case study:Beekherstel Ramsbeek

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Location: 52° 4' 40.23" N, 6° 41' 26.07" E

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Project overview

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Status	Complete
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 measures in streams
This is a parent project encompassing the following projects	No

Ramsbeek

Project summary

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The Ramsbeek water body is classified as a river under the WFD system. It is an R5 category water body: slow-flowing middle/lower reach on sand. The entire Ramsbeek is managed by water authority Rijn en IJssel. The water body is located in the province of Gelderland, municipality Berkelland. It is 5,2 km long and has a catchment of 2334 hectares in the Netherlands. The Ramsbeek partly originates in Germany and also receives water from the Veengoot, which originates near the clay pits and the Zwillbrocker Venn. The total catchment area of the stream is 4152 ha, of which 1818 ha in Germany. The Ramsbeek discharges into the Berkel. Water levels are managed with one adjustable wei rand six fixed weirs. In 2013, these weirs were either made passable for fish or removed. In the Ramsbeek water body, a single maximum water level is pursued for each managed stretch, because of the fixed weirs. The water level depends on upstream discharge. Water levels are variables in the stretches with adjustable weirs. These weirs were removed in the latest plan period, when the stream was re-designed. The Ramsbeek carries water all year. Upstream parts of the waterways do not run dry during dry periods. There are no sewage treatment plants present in the catchment of the Ramsbeek.

Tree trunks were introduced in the stream's banks at two locations, as part of a dead wood experiment of the water authority. Since an earlier experiment in the Leerinkbeek showed that bundles of branches can get clogged easily, trunks with roots were used in this experiment. One third of the waterway was kept open.

Monitoring surveys and results

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At one location, the introduction of trunks caused a more dynamic flow regime with deeper stream beds. At another location, the patches with dead wood filled up with sand, that had to be removed to prevent rising water levels.

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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 Berkel 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 Grassland, Intensive agriculture (arable), Broadleaf/mixed woodland (semi natural) Waterbody ID NL07_0016 Other case studies in this subcatchment: Beekherstel Eefsebeek, Beekherstel Leerinkbeek, Beekherstel Willinkbeek, Beneden-Berkel, Boldersbeek Site Edit site Name Ramsbeek WFD water body codes NL07_0017 WFD (national) typology R5 WFD water body name Pre-project morphology Actively meandering Reference morphology Actively meandering 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 Grassland Average bankfull channel width category Less than 2 m Average bankfull channel width (m) 11 m <br />0.001 km <br />100 cm <br /> Average bankfull channel depth category Less than 0.5 m Average bankfull channel depth (m) 0.20.2 m <br />2.0e-4 km <br />20 cm <br /> Mean discharge category 0.1 - 1.0 m³/s Mean annual discharge (m3/s) 0.90.9 m³/s <br />900 l/s <br /> Average channel gradient category Less than 0.001 Average channel gradient 0.0007 Average unit stream power (W/m2) 6.178416.178 W/m² <br /> Project background Edit project background Reach length directly affected (m) Project started 2008/2015"2008/2015" contains a sequence that could not be interpreted against an available match matrix for date components. Works started Works completed 2015/12/31 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 Continuity for organisms, Flow velocities, Width & depth variation Biology Fish, Invertebrates Physico-chemical Oxygen balance, PH, Temperature Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Beschaduwing Floodplain / River corridor Dood hout inbreng 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