Case study:Restoration of a stretch of the river of Santa Coloma

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Location: 41° 51' 22.78" N, 2° 39' 46.12" E
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Project overview

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Status Complete
Project web site
Themes Habitat and biodiversity, Hydromorphology
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
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encompassing the following
projects
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Project picture

Project summary

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The project aims to naturalize the river area without removing the structures present scenically functionality and integrating functional. In addition to correcting erosive effects observed in slopes due to excessive slope and drains poorly resolved. The main project objectives are to consolidate and eliminate erosion on slopes using new bioengineering techniques; scenically integrated the collector into the river area by removing the concrete channel and creating a vegetated protection; eliminate nonfunctional structures and restore the natural morphology; new plantations along the length of the channel affected by the works. The project has a total budget of 22.811,72€ and is financed by Sport Assistance, S.L.

Monitoring surveys and results

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Lessons learnt

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Image gallery


Map of the restoration area
Aerial view of the restoration area
Map of the restoration area
Erosion control on slopes
Erosion control on slopes
Erosion control on slopes
Erosion control on slopes
Erosion control on slopes
Removing obsolete collector
Removing obsolete collector
Photos of landscape integration of the collectors
Photos of landscape integration of the collectors
Photos of landscape integration of the collectors
Photos of landscape integration of the collectors
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Catchment and subcatchment

Catchment

River basin district Pirineo Oriental
River basin Tordera

Subcatchment

River name Riera de Santa Colom
Area category
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 120 m0.12 km <br />12,000 cm <br />
Dominant geology
Ecoregion Ibero-Macaronesian
Dominant land cover Urban, Woodland
Waterbody ID



Site

Name Santa Coloma de Farners
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology
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) 55 m <br />0.005 km <br />500 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

Reach length directly affected (m) 166 m0.166 km <br />16,600 cm <br />
Project started 2010/04/01
Works started
Works completed 2010/04/01
Project completed
Total cost category 10 - 50 k€
Total cost (k€) 22 k€22,000 € <br />
Benefit to cost ratio
Funding sources Sport Asistance, S.L.

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

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


Measures

Structural measures
Bank/bed modifications New bioengineering elements in order to stabilize slope banks
Floodplain / River corridor Removal of exotic plants, Restoring riparian vegetation
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



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Additional links and references

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Supplementary Information

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