Case study:Llobregat river restoration

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Location: 41° 25' 56.52" N, 1° 59' 52.06" E

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Project overview

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Status	Complete
Project web site
Themes	Environmental flows and water resources, Habitat and biodiversity, Hydromorphology, Social benefits
Country	Spain
Main contact forename	Joan
Main contact surname	Feliú
Main contact user ID
Contact organisation	Acciónatura
Contact organisation web site
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

Project picture

Project summary

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The river Llobregat lower course is the result of centuries of human activity. Historically it has tried to avoid overflows and maintain a constant channel in order to gain land for agriculture and to capture water for irrigation and industry. In recent years, construction of major infrastructures such as highway, the TGV and other service roads have come to narrow the river steadily reducing temporary floodplain. The important aspects are summarized in the following features: creating favorable conditions (morphological and hydraulic); stabilize the channel and enable the growth of vegetation compatible with the frequency of floods and flooding near the river; create riverside communities continue to function as a corridor; promote native species and eliminate the alien; recover the riparian habitat and all; lost and refuge areas for wildlife habitat; encourage and facilitate the enjoyment of the river by the population, with emphasis on landscape and ecological aspects and fen-it compatible with conservation.

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Image gallery

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Map of the restoration area

Reeds on the bank of the Llobregat River

Disposal of dead wooden logs and bird sanctuaries

Placement of stone blocks to improve channel structure. Reprofiling the banks

Reeds removal (before works)

Reeds removal (before works)

Reeds removal

Wastes and debris in the channel before the cleaning tasks

Sheepherding on the banks of the Llobregat River

Volunteers planting vegetation on the banks

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 Llobregat Subcatchment River name Llobregat Area category Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) 25 m0.025 km <br />2,500 cm <br /> Dominant geology Ecoregion Ibero-Macaronesian Dominant land cover Urban Waterbody ID Other case studies in this subcatchment: Increased biodiversity, river Llobregat, Sallent. Site Edit site Name Pallejà WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Sinuous, Braided Reference morphology Sinuous, Braided 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 Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) 20.7720.77 m³/s <br />20,770 l/s <br /> Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) 170 m0.17 km <br />17,000 cm <br /> Project started 2009/01/01 Works started Works completed 2010/01/01 Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources ACA 70%, Accionatura 30% 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 Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Hydromorphology Structure & condition of riparian zones, Channel pattern/planform, Width & depth variation Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Revetmens with local species, Bank stabilisation Floodplain / River corridor Riparian planting, Control of invasive species, Silvicultural treatments Planform / Channel pattern Remove obstacles in the riverbed 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