Case study:Millingerwaard-Floodplain rehabilitation

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Location: 51° 52' 16", 6° 0' 16"
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Project overview

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Status In progress
Project web site http://www.ruimtevoorderivier.nl/waar-doen-we-dit/projecten/gelderland/uiterwaardvergraving-millingerwaard/
Themes Habitat and biodiversity, Monitoring, Water quality
Country Netherlands
Main contact forename Rene
Main contact surname Tank
Main contact user ID
Contact organisation Dienst Landelijk Gebied
Contact organisation web site
Partner organisations Rijkswaterstaat
Parent multi-site project

Case_study:Room for the River

This is a parent project
encompassing the following
projects
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Project summary

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This project lowers the waterlevels of the river Waal during high water events with 9 cm. This is achieved by lowering the ground surface level of the river foreland, and by digging new gullies, which will also create more natural conditions. As a result, a river dunes landscape interspersed with forest will (re)emerge.

Also see the infographic on http://issuu.com/ruimtevoorderivier/docs/uiterwaardvergraving_millingerwaard (Dutch)

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

Catchment

River basin district Rhine
River basin Millingerwaard

Subcatchment

River name Waal
Area category more than 10000 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m)
Dominant geology Calcareous
Ecoregion Central Plains
Dominant land cover Extensive agriculture, Urban
Waterbody ID



Other case studies in this subcatchment: Beneden-Leeuwen-Side channel, Buiten Ooij, Opijnen- Side channel


Site

Name Millingerwaard floodplain rehabilitation
WFD water body codes
WFD (national) typology R7
WFD water body name
Pre-project morphology Sinuous, Single channel, High width:depth
Reference morphology Single channel, Sinuous
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 Quick run-off, Tidal
Dominant substrate Gravel, 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 more than 10 m
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

Reach length directly affected (m) 10000 m
10 km
1,000,000 cm
Project started 1990/01/01
Works started 1990/01/01
Works completed 2012/01/01
Project completed
Total cost category more than 10000 k€
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

Mitigation of a pressure Riparian development
Hydromorphology Quantity & dynamics of flow, Structure & condition of riparian zones
Biology Macrophytes
Physico-chemical
Other reasons for the project


Measures

Structural measures
Bank/bed modifications Bank reprofiling
Floodplain / River corridor Riparian planting, Creation of river dunes, Increase water retention area
Planform / Channel pattern
Other
Non-structural measures
Management interventions
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 Yes Improvement

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



Additional documents and videos


Additional links and references

Link Description
http://www.ruimtevoorderivier.nl/meta-navigatie/english/ english website

Supplementary Information

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