Case study:Linde: Difference between revisions

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|Name of parent multi-site project=Building with nature measures in streams
|Name of parent multi-site project=Building with nature measures in streams
|Multi-site=No
|Multi-site=No
|Project summary=The mowing regime will be changed to main channel mowing. This is supposed to increase the presence of aquatic plants. Maintenance is reduced to the minimum that is required to prevent the waterway from getting clogged by sediment. The proper timing of maintenance will be determined visually.
|Project summary=The Linde is originally a slowly flowing lowland stream on a sandy substrate. The stream has changed because of straightening, normalization and bank stabilising measures. To meet WFD criteria, abandoned meanders are being dug out and spillways are created to lead the water through the channel. In addition, the mowing regime will be changed to main channel mowing. This is supposed to increase the presence of aquatic plants. Maintenance is reduced to the minimum that is required to prevent the waterway from getting clogged by sediment. The proper timing of maintenance will be determined visually.
|Project title=Linde
|Project title=Linde
}}
}}

Latest revision as of 13:00, 15 April 2021

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Location: 52° 50' 57.03" N, 6° 0' 10.19" E
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Project overview

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Status Planned
Project web site
Themes Habitat and biodiversity, Hydromorphology, Water quality
Country Netherlands
Main contact forename Koos
Main contact surname Koops
Main contact user ID
Contact organisation Wetterskip Fryslân
Contact organisation web site http://www.wetterskipfryslan.nl
Partner organisations
Parent multi-site project

Building with nature measures in streams

This is a parent project
encompassing the following
projects
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Project summary

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The Linde is originally a slowly flowing lowland stream on a sandy substrate. The stream has changed because of straightening, normalization and bank stabilising measures. To meet WFD criteria, abandoned meanders are being dug out and spillways are created to lead the water through the channel. In addition, the mowing regime will be changed to main channel mowing. This is supposed to increase the presence of aquatic plants. Maintenance is reduced to the minimum that is required to prevent the waterway from getting clogged by sediment. The proper timing of maintenance will be determined visually.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

Catchment

River basin district Rijn
River basin Rijndelta

Subcatchment

River name Friese Wateren
Area category 1000 - 10000 km²
Area (km2) 25002,500 km² <br />250,000 ha <br />
Maximum altitude category Less than 100 m
Maximum altitude (m) 2626 m <br />0.026 km <br />2,600 cm <br />
Dominant geology Siliceous, Organic
Ecoregion Central Plains
Dominant land cover Grassland
Waterbody ID NL02L1



Other case studies in this subcatchment: Koningsdiep


Site

Name Linde
WFD water body codes NL02L1
WFD (national) typology R5
WFD water body name Linde en Noordwoldervaart
Pre-project morphology Straightened
Reference morphology Actively meandering
Desired post project morphology Straightened
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, Broadleaf/mixed woodland (semi natural)
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 Less than 0.001
Average channel gradient
Average unit stream power (W/m2)


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

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


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

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

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

Supplementary Information

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