Case study:Recovery "CañoTravieso"

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Location: 37° 2' 2", -6° 18' 7"
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Project overview

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Status Complete
Project web site
Themes Environmental flows and water resources, Monitoring, Water quality
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

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encompassing the following
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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.

Works included: Retrieving the original layout of the Travieso and morphology of the marshes.

Monitoring surveys and results

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Lessons learnt

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Image gallery


Aerial view in 1956
Aerial view in 2003
Aerial view in 2009
Map of the restoration area
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Catchment and subcatchment

Catchment

River basin district C.H.Guadalquivir
River basin Guadalquivir

Subcatchment

River name Guadalquivir
Area category
Area (km2)
Maximum altitude category Less than 100 m
Maximum altitude (m) 50 m
0.05 km
5,000 cm
Dominant geology
Ecoregion Ibero-Macaronesian
Dominant land cover Extensive agriculture
Waterbody ID



Other case studies in this subcatchment: Control and permeabilization of the marsh to the river, the Brazo de la Torre and Entremuros, Guadiamar Green Corridor Project, Recovery "CañoTravieso", Recovery of the functionality of Brazo de la Torre, Restoration of streams Chico Soto, Soto Grande and Arroyo de la Laguna de los Reyes, Restoration of the stream of the Partido


Site

Name Caño Travieso
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology Sinuous
Reference morphology Sinuous
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 Clay, Silt
River corridor land use Extensive agriculture, Wetland
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

Reach length directly affected (m)
Project started 2003/05/01
Works started
Works completed 2005/11/01
Project completed
Total cost category more than 10000 k€
Total cost (k€) 35373 k€
35,373,000 €
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 Tragsatec
Post-project management and maintenance
Monitoring



Reasons for river restoration

Mitigation of a pressure
Hydromorphology Channel pattern/planform
Biology
Physico-chemical
Other reasons for the project Landscape enhancement


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor Habitat restoration
Planform / Channel pattern Modification or removal of existing defenses, Channel naturalisation, Improvement of channel morphology
Other
Non-structural measures
Management interventions Environmental restoration of the area integral transformed by agriculture
Social measures (incl. engagement)
Other


Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative


Monitoring documents



Additional documents and videos


Additional links and references

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Supplementary Information

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