Case study:Lunterse Beek

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Location: 52° 4' 3.69" N, 5° 31' 27.79" E
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Project overview

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Status Complete
Project web site http://www.sprengenbeken.nl/tag/lunterse-beek/
Themes Environmental flows and water resources, Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Monitoring, Water quality
Country Netherlands
Main contact forename Maarten
Main contact surname Veldhuis
Main contact user ID
Contact organisation Waterschap Vallei en Veluwe
Contact organisation web site http://www.vallei-veluwe.nl/
Partner organisations STOWA
Parent multi-site project

Building with Nature measures in streams

This is a parent project
encompassing the following
projects
No
De oude Lunterse beek

Project summary

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Restoration measures were carried out in a trajectory of the Lunterse Beek to the west of Renswoude, south of the N224 up to the Liniedijk.

Since the Lunterse beek is a mass of water with little flow and dynamics, the water authority created a side channel, which should be embedded in the landscape and improve the stream’s ecology. This side channel also functions as a spillway when discharges are high. Because a weir is present at the location where the stream cuts through the Liniedijk, the side channel was led through a culvert in the dyke, after which it becomes a meandering stream that connects to the Lunterse Beek downstream of the weir.

The side channel passes through the small woodland area of Klein Wolfswinkel, where it passes close by a badger’s sett (Du: Dassenburcht); one of the pictures shows the badger’s nursery. The area also features living quarters of a fox, a hawk and a buzzard and is home to a colony of herons.

The ecology will be monitored further, both at the banks, where stubbs were introduced as a bank edge, and in the stream itself. The vegetation that was introduced at several locations near the stream will be monitored as well. The design of the area is such that little maintenance should be necessary.

The restorion measures in the Lunterse Beek aim to improve the flow conditions and increase the variation in flora and fauna. Fish like the gudge (Nl: riviergrondel) and ide (Nl: winde) will soon be able to swim upstream when the weir at the Groeperkade will be made passable for fish.

Source: https://www.sprengenbeken.nl/tag/lunterse-beek/

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment



Site

Name Lunterse Beek
WFD water body codes
WFD (national) typology R5
WFD water body name
Pre-project morphology Strongly changing
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 Mineral ground
Dominant substrate Sand
River corridor land use Agriculteral land, forest
Average bankfull channel width category 5 - 10 m
Average bankfull channel width (m) 66 m <br />0.006 km <br />600 cm <br />
Average bankfull channel depth category 0.5 - 2 m
Average bankfull channel depth (m) 0.60.6 m <br />6.0e-4 km <br />60 cm <br />
Mean discharge category 0.1 - 1.0 m³/s
Mean annual discharge (m3/s) 0.160.16 m³/s <br />160 l/s <br />
Average channel gradient category Less than 0.001
Average channel gradient 0.0007
Average unit stream power (W/m2) 0.1830640.183 W/m² <br />


Project background

Reach length directly affected (m) 40004,000 m <br />4 km <br />400,000 cm <br />
Project started 2011
Works started 2014/01/01
Works completed 2015/01/01
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

Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
Other reasons for the project Maaibeheer


Measures

Structural measures
Bank/bed modifications Dead wood deposit, Sand deposit
Floodplain / River corridor
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
Flow velocities No No No No No
Width & depth variation No No No No No
Channel pattern/planform No No No No No

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Macrophytes No No No No No
Fish No No No No No

Physico-chemical quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Oxygen balance No No No No No
PH No No No No No
Temperature No No No No No
Transparency No No No No No
Salinity No No No No No

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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Supplementary Information

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