Case study:Restoration project in the stream of the Vall d'Horta and surrounds. Natural Park of Sant Llorenç del Munt i l'Obac.

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Location: 41° 40' 8.63" N, 2° 2' 34.75" E

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Project overview

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

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Project summary

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The work carried out aims to improve the processes of regeneration and improvement of forest structure, minimize erosion, improve the social use, improve the drainage of the stream and the biological connection of a weir with a fish ladder and rehabilitate different habitats. The main objectives of this project are improved post-fire forest structure with the removal of dead wood and selective pruning of some feet; improvement of plant diversity by planting species; improving the dynamics of the stream; promote the area as a recreation space the stream and the home environment of the Muntada; sort the area to prevent environmental deterioration (erosion, loss of soil and plant diversity, etc..); landscape integration of the work done. The project has a total budget of 72.226 € and is financed by the Council of Barcelona and by the Natural Park Sant Llorenç de Munt i l'Obac.

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	Besós

Subcatchment

River name	Riera de la Val d'Horta
Area category	Less than 10 km²
Area (km2)	6 km²600 ha <br />
Maximum altitude category	500 - 1000 m
Maximum altitude (m)	510 m0.51 km <br />51,000 cm <br />
Dominant geology
Ecoregion	Ibero-Macaronesian
Dominant land cover
Waterbody ID

Other case studies in this subcatchment: Restoration project in the stream of the Vall d'Horta and surrounds. Natural Park of Sant Llorenç del Munt i l'Obac.

Site

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Name	Riera de la Val d'Horta
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)	33 m <br />0.003 km <br />300 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)	2015 m2.015 km <br />201,500 cm <br />
Project started
Works started
Works completed
Project completed
Total cost category	50 - 100 k€
Total cost (k€)	72 k€72,000 € <br />
Benefit to cost ratio
Funding sources	Council of Barcelona, PN Sant Llorenç de Munt i l'Obac

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	Wildfire erosion protection
Hydromorphology	Continuity for organisms, Structure & condition of riparian zones
Biology
Physico-chemical
Other reasons for the project	Bank erosion, Landscape enhancement

Measures

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Structural measures
Bank/bed modifications	New bioengineering elements in order to stabilize slope banks, Installing fish scale
Floodplain / River corridor	Cutting or pruning health of individuals affected by the fire to accelerate natural regeneration, Removal of exotic plants
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

Element	When monitored		Type of monitoring		Control site used	Result
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Physico-chemical quality elements

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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

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

Monitoring documents

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Image gallery

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Map of the restoration area

Map of the restoration area

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Photos of the area before and after works

Additional documents and videos

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Additional documentation (in Spanish)

Additional links and references

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Link	Description

Supplementary Information

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