Case study:Tolka Valley Park erosion control

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Project overview

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Status	Complete
Project web site
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
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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.

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Site

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Name
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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
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Project background

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Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
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Reasons for river restoration

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Mitigation of a pressure
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Measures

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Structural measures
Bank/bed modifications	New bioengineering elements in order to improve banks
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Monitoring

Hydromorphological quality elements

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Element	When monitored		Type of monitoring		Control site used	Result
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Additional links and references

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Link	Description
http://www.dublincity.ie/RecreationandCulture/DublinCityParks/VisitaPark/Documents/Tolka%20valley%20Greenway.pdf	Tolka Valley Greenway factsheet

Supplementary Information

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