Case study:Restoration of the marsh "Gallega"

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Location: 37° 6' 32.39" N, 6° 22' 46.03" W

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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, Monitoring
Country	Spain
Main contact forename	MARM
Main contact surname	MARM
Main contact user ID
Contact organisation	MARM
Contact organisation web site
Partner organisations
Parent multi-site project	Case_study:Doñana 2005
This is a parent project encompassing the following projects	No

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Project summary

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The project "Doñana 2005" aims to restore and rehabilitate the complex hydraulics of the marsh, allowing the system to evolve with the highest degree of naturalness and freedom possible within the constraints of the environment of social, economic, administrative, technical, cultural, etc. There are some actuations included in this project: Route water: environmental restoration project for tourist use; Restoration of the marsh "Gallega"; Control and permeabilization of the marsh to the river, the Brazo de la Torre and Entremuros; Restoration of streams Chico Soto, Soto Grande and Arroyo de la Laguna de los Reyes; Restoration of the stream of the Partido; Recovery of the functionality of Brazo de la Torre; and Recovery Caño Travieso.

The main objectives are: *Restore water inputs to the marsh, in quantity and quality needed to restore the water dynamics of the marsh itself Doñana. *To maintain, without interruption, the permeability between the marsh of Doñana and the Guadalquivir River estuary ensuring the incorporation of flows. *Establish a system for evaluation and monitoring to enable a critical assessment of compliance with the plan and promote a research agenda and a specific line of disclosure, dissemination and presentation of results. *Temporarily prevent the incorporation into the marsh of contaminated water or sediments, whereas such a risk. It is also necessary to prevent such waters can be incorporated into water systems or made available to any user.

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Image gallery

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Aerial view of Gallega marsh in October 2004

Aerial view of Gallega marsh in 2007

Gallega marsh from the FAO embankment

Permeabilization works on the side wall

View of the drainage network in the marsh Gallega

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district C.H.Guadalquivir River basin Guadalquivir Subcatchment River name Guadiamar Area category Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) 2 m0.002 km <br />200 cm <br /> Dominant geology Calcareous, Silts and clays Ecoregion Ibero-Macaronesian Dominant land cover Wetland Waterbody ID Other case studies in this subcatchment: Design and Application of a Sustainable Soil Management Model for Orchard Crops in the Doñana National Park Area, Restoration of the marsh "Gallega" Site Edit site Name Marisma Gallega WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Marsh Reference morphology Marsh Desired post project morphology Heavily modified water body National/international site designation Local/regional site designations Area of Special Conservation Interest Protected species present Invasive species present Species of interest Dominant hydrology Tidal Dominant substrate Silt, Clay River corridor land use 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) Project started 2005/01/01 Works started Works completed 2005/11/01 Project completed Total cost category 1000 - 5000 k€ Total cost (k€) 2746 k€2,746,000 € <br /> Benefit to cost ratio Funding sources FEDER, MARM 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 C.H.Guadalquivir Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Pollution incident Hydromorphology Channel pattern/planform Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Restore the original morphology of the marsh, Reconnect and restore aquatic habitats Other Permeabilize the side wall of the FAO 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