Case study:Sustainable management, at local level, of the alluvial aquifer of the River Tordera, through the reuse of waste water

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Location: 41° 41' 46.59" N, 2° 44' 0.73" E

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Project overview

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Status	Complete
Project web site
Themes	Environmental flows and water resources, Social benefits, Water quality
Country	Spain
Main contact forename	Lluis
Main contact surname	Balaguer
Main contact user ID
Contact organisation	ACA
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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 rivers of the Mediterranean countries are subject to intense human occupancy that causes problems in the exploitation of their resources. The overuse of water resources (urban, industrial and agricultural) leads to the following impacts on alluvial aquifers: The water table is lowered and the capacity of the bores is reduced; the drought period is extended, leaving the river bed dry for increasing periods; groundwater quality is reduced and urban water supply sources become polluted; protected wetlands dry up, biodiversity is lost and conservation problems arise. The Tordera Aquifer project will strive to reverse this trend by improving water management in the Tordera municipality. The objectives are as follows: improve quality of the sewage system; recycled treated water for conservation (aquifer recharge, establishment of wetlands); use of renewable energy and low-maintenance, soft treatment systems in the processes; serve as a pioneer example for other communities in the same river basin which can manage their water resources in a similar way. This project counts with the support of local, regional and European institutions. The financing comes from the LIFE initiative, the Tordera City Council and the Government of Cataluña. The total budget is 1.409.139€ (LIFE support 338.101€).

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Aerial view of the restoration area

Solar panels for powering pumps water reuse

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 Tordera Subcatchment River name Tordera 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: Fluvial river restoration of Tordera in Sant Celoni, Fluvial river restoration of Tordera in Tordera Site Edit site Name Río Tordera WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Braided Reference morphology 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) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) 55 m0.055 km <br />5,500 cm <br /> Project started 2001/07/01 Works started Works completed 2003/12/01 Project completed Total cost category 1000 - 5000 k€ Total cost (k€) 1409 k€1,409,000 € <br /> Benefit to cost ratio Funding sources LIFE project 338.101€, ACA, Tordera city council 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 ISTEM (sistema de placas fotovoltaica) Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Abstraction Hydromorphology Connection to groundwaters Biology Physico-chemical Salinity Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Creation of an infiltration lagoon, New habitats construction Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Communication and dissemination program of environmental problems in the area. 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