Case study:Restoration project of the degraded area of the Molí source environment and improvement of river areas and adjacent riparian formations

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Location: 42° 11' 57.05" N, 2° 42' 3.00" 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
This is a parent project encompassing the following projects	No

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Project summary

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The area to be restored has been divided into two sections. In the first, there is a medieval wall damaged by time and erosion visible on the slope that separates the river bed. In the second, we see the effects of erosion caused by a channel: nearly vertical slope with landslides in some areas. The main actions in this project are: the use of new bioengineering elements in order to stabilize slope banks and to prevent erosion in town wall; replaced the hard defenses by bioengineering structures; facilitate natural regeneration of riparian vegetation. The project has a total budget of 94.788,5 € and is financed by the Municipality of Besalú.

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Image gallery

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Map of the restoration area

Map of the restoration area

Aerial view of the restoration area

Photos of the area before works

Photos of the area before works

Photos of the area before works

Photos of the area before works

Photos of the area during works

Photos of the area during works

Photos of the area during works

Photos of the area after works

Photos of the area after works

Photos of the area after works

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Pirineo Oriental River basin El Fluviá Subcatchment River name El Fluviá Area category Area (km2) Maximum altitude category 100 - 200 m Maximum altitude (m) 140 m0.14 km <br />14,000 cm <br /> Dominant geology Ecoregion Ibero-Macaronesian Dominant land cover Urban Waterbody ID Site Edit site Name Besalú 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 Urban Average bankfull channel width category 10 - 50 m Average bankfull channel width (m) 1818 m <br />0.018 km <br />1,800 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 Edit project background Reach length directly affected (m) 108 m0.108 km <br />10,800 cm <br /> Project started 2008/01/01 Works started Works completed 2008/03/01 Project completed Total cost category 50 - 100 k€ Total cost (k€) 94 k€94,000 € <br /> Benefit to cost ratio Funding sources Municipality of Besalú 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 Edit reasons for restoration Mitigation of a pressure Hydromorphology Channel pattern/planform, Structure & condition of riparian zones Biology Physico-chemical Other reasons for the project Bank erosion Measures Edit Measures Structural measures Bank/bed modifications New bioengineering elements in order to stabilize slope banks, Bank stabilization and erosion protection Floodplain / River corridor Riparian vegetation improvement Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit 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 Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional documentation (in Spanish) Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information