Case study:Tolka Valley Park erosion control

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Location: 53° 22' 37.90" N, 6° 18' 21.94" W
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Project overview

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Status Complete
Project web site http://riverwiki.restorerivers.eu/wiki/index.php?title=Case_study%3ATolka_Valley_Park_erosion_control
Themes Habitat and biodiversity, Monitoring, Social benefits
Country Ireland
Main contact forename Maryann
Main contact surname Harrie
Main contact user ID
Contact organisation Dublin City Council
Contact organisation web site http://www.dublincity.ie
Partner organisations
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Project summary

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The improvement of the Tolka Valley Park by Dublin City Council along the River Tolka created opportunity to pilot a new piloted approach under Renew4GPP, which is an EU LIFE Project (LIFE09 ENV/BE/000406).

The project aimed to enhance green space in an urban area by demonstrating to local authorities the ecological advantages to prevent erosion using high-quality and 100% biodegradable matting materials. This project also targeted existing fisheries to be improved with an increase of people engagement and the support from the Inland Fisheries Ireland and the Tolka Trout Anglers Association.

This piloted matting approach uses biodegradable weed control matting to be installed in areas of exposed soil. The site is being monitored by the Parks and Landscape Services Division to assess the effectiveness of the matting approach. First results indicate that it is preventing soil loss during flooding, resisting burning and reducing maintenance requirements.

Monitoring surveys and results

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Lessons learnt

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Image gallery


Tolka Valley Park at Finglas.jpg
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Catchment and subcatchment



Site

Name
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body No
National/international site designation EU - Special Area of Conservation
Local/regional site designations
Protected species present Yes
Invasive species present No
Species of interest Otter (Lutra lutra), Atlantic salmon (Salmo salar), kingfisher (Alcedo atthis), Bats (4 spp.), Trout
Dominant hydrology
Dominant substrate
River corridor land use
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Project background

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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 New bioengineering elements in order to stabilize slope banks
Floodplain / River corridor
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


Monitoring

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Any other monitoring, e.g. social, economic

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Monitoring documents



Additional documents and videos


Additional links and references

Link Description
http://www.dublincity.ie/RecreationandCulture/DublinCityParks/VisitaPark/Documents/Tolka%20valley%20Greenway.pdf Tolka Valley Greenway factsheet
http://Dublin City Council Local Parks: Tolka Valley Park http://www.dublincity.ie/RecreationandCulture/DublinCityParks/VisitaPark/Pages/TolkaValleyPark.aspx

Supplementary Information

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