Case study:River restoration project of the stream of Vallvidrera

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Project overview

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Status	Complete
Project web site
Themes
Country	Spain
Main contact forename
Main contact surname
Main contact user ID
Contact organisation	Naturalea
Contact organisation web site
Partner organisations
This is a parent project encompassing the following projects	No

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Project summary

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Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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Catchment

River basin district	Pirineo Oriental
River basin	Llobregat

Subcatchment

River name	Riera de Vallvidrera
Area category
Area (km2)
Maximum altitude category	100 - 200 m
Maximum altitude (m)	145 m0.145 km <br />14,500 cm <br />
Dominant geology
Ecoregion	Ibero-Macaronesian
Dominant land cover
Waterbody ID

Site

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Name	Riera de Vallvidrera en el término municipal de Sant Cugat
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology	Sinuous
Reference morphology	Sinuous
Desired post project morphology
Heavily modified water body
National/international site designation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology
Dominant substrate
River corridor land use
Average bankfull channel width category	2 - 5 m
Average bankfull channel width (m)	22 m <br />0.002 km <br />200 cm <br />
Average bankfull channel depth category
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

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Reach length directly affected (m)	414 m0.414 km <br />41,400 cm <br />
Project started	2010/08/01
Works started
Works completed	2010/09/01
Project completed
Total cost category	10 - 50 k€
Total cost (k€)	37 k€37,000 € <br />
Benefit to cost ratio
Funding sources	Collserola Park Consortium

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			Naturalea, S.L.
Post-project management and maintenance
Monitoring

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology	Channel pattern/planform, Structure & condition of riparian zones
Biology
Physico-chemical
Other reasons for the project

Measures

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Structural measures
Bank/bed modifications	New bioengineering elements in order to stabilize slope banks
Floodplain / River corridor	Removal of exotic plants, Riparian vegetation improvement
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other

Monitoring

Hydromorphological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Biological quality elements

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quality elements

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Physico-chemical quality elements

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quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents

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Image gallery

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Additional documents and videos

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Additional links and references

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Supplementary Information

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