Case study:Fluvial improvement in Riera de Caldés

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Location: 41° 34' 17.07" N, 2° 10' 29.82" E

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Project overview

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Status	Complete
Project web site
Themes	Environmental flows and water resources, Hydromorphology, Water quality
Country	Spain
Main contact forename	Naturalea
Main contact surname	Naturalea
Main contact user ID
Contact organisation	Naturalea Conservació, S.L.
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Parent multi-site project
This is a parent project encompassing the following projects	No

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The Caldés is an arroyo located in NE of Spain, in the Besos' Basin. The work area is located in the village of Palau-solitá, near Barcelona. The reach has a length of 5.900 meters and about 34,5 has. As the work area is an urban space, it's important for the local population the accessibility and programs to bring to the attention of the people. The project of fluvial improvement is aimed to develop and increase the riparian communities in order to ameliorate water quality. There also are local problems that are necessary to solve: local impacts, banks erosion, rip-raps that are obsoletes... One of the main objectives is to improve the quality of the fluvial landscape. The project includes removal of exotic plants (Arundo donax, Cortadelia seollana…); riparian tree planting with non exotic plants; creation of new habitats for amphibian communities. New bio-engineering techniques are used to develop and help these riparian communities. The works started in March 2009 and finished in November 2009. All the works were carried out by Natualea Conservació, S.L., a local enterprise.

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Map of the restoration area

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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 Besós Subcatchment River name Riera de Caldés Area category Area (km2) 1038 km²103,800 ha <br /> Maximum altitude category Maximum altitude (m) 120 m0.12 km <br />12,000 cm <br /> Dominant geology Ecoregion Ibero-Macaronesian Dominant land cover Urban Waterbody ID Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Embanked Reference morphology Desired post project morphology Heavily modified water body true National/international site designation Local/regional site designations Protected species present Invasive species present Species of interest Dominant hydrology Ephemeral Dominant substrate River corridor land use Urban Average bankfull channel width category 10 - 50 m Average bankfull channel width (m) 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) 5900 m5.9 km <br />590,000 cm <br /> Project started 2009/03/01 Works started Works completed 2009/11/01 Project completed Total cost category Total cost (k€) 117 k€117,000 € <br /> Benefit to cost ratio Funding sources Ajuntament de Palau-Solità i Plegamans 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 Conservació, S.L. Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Riparian development Hydromorphology Channel pattern/planform, Structure & condition of riparian zones Biology Physico-chemical Other reasons for the project Landscape enhancement Measures Edit Measures Structural measures Bank/bed modifications Removal of rip-rap, New bioengineering elements in order to stabilize slope banks Floodplain / River corridor Riparian planting, Removal of exotic plants 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