Case study:Rijkelse Bemden - River bed widening

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Location: 51° 15' 43", 6° 0' 37"
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Project overview

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Status Complete
Project web site
Themes Flood risk management, Water quality
Country Netherlands
Main contact forename Lokat
Main contact surname Maaswerken
Main contact user ID
Contact organisation
Contact organisation web site
Partner organisations
This is a parent project
encompassing the following
projects
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Catchment and subcatchment

Catchment

River basin district Meuse
River basin Meuse

Subcatchment

River name Meuse
Area category more than 10000 km²
Area (km2) 465
465 km²
46,500 ha
Maximum altitude category 100 - 200 m
Maximum altitude (m) 200
200 m
0.2 km
20,000 cm
Dominant geology chalk and loess
Ecoregion Western Plains
Dominant land cover Intensive agriculture, Urban
Waterbody ID



Other case studies in this subcatchment: Aaijen- Removal of bank fixation, Meers - Floodplain lowering, Reméandration du Geer à Grand-Axhe, Tungelroyse beek, Voorste Nete at Dessel


Site

Name Rijkelse Bemden
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology Straight, Single channel, Entrenched
Reference morphology Embanked, Single channel
Desired post project morphology
Heavily modified water body true
National/international site designation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology Artificially regulated
Dominant substrate Sand
River corridor land use Extensive agriculture, Urban
Average bankfull channel width category 10 - 50 m
Average bankfull channel width (m)
Average bankfull channel depth category 5 - 10 m
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s) 230 m³/s
230,000 l/s
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)


Project background

Reach length directly affected (m) 1100 m
1.1 km
110,000 cm
Project started
Works started 1998/01/01
Works completed 2001/01/01
Project completed
Total cost category 5000 - 10000 k€
Total cost (k€) 9000 k€
9,000,000 €
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

Mitigation of a pressure Mining, Agriculture
Hydromorphology Channel pattern/planform, Width & depth variation, Quantity & dynamics of flow
Biology Macrophytes
Physico-chemical
Other reasons for the project Flood risk management, Nature development


Measures

Structural measures
Bank/bed modifications Bank reprofiling
Floodplain / River corridor
Planform / Channel pattern Channel widening
Other
Non-structural measures
Management interventions Reduced dredging
Social measures (incl. engagement)
Other


Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Macrophytes Yes Yes Inconclusive

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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative


Monitoring documents



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Additional links and references

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Supplementary Information

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