Case study:Restoration in the lower reach of the Cinca River

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Location: 41° 33' 6", 0° 19' 24"
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Project overview

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Status Complete
Project web site
Themes Flood risk management, Habitat and biodiversity, Land use management - forestry
Country Spain
Main contact forename CHE
Main contact surname CHE
Main contact user ID
Contact organisation MARM
Contact organisation web site http://www.chebro.es
Partner organisations
Parent multi-site project
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encompassing the following
projects
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Project picture

Project summary

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The objective of the project is to restore the stream morphology and floodplain conditions in the right bank of the river Cinca, in the lower reach, between Velilla de Cinca and Fraga. There is a major actuation that consists of remove a levee that only protects crops. There are two groups of measures: Morphological as the increase of the Fluvial Mobility Space through the remove of the levee closer to the river. There is other levee that protects the 500-year flood, but it will be preserved. This actuation will increase the lateral connectivity between the stream and the riparian vegetation; and about riparian vegetation, with 2 different tasks: a)Natural riparian vegetation recovery through the cut down of black poplars plantation. There are going to plant native species: Salix, Corylus avellana, Fraxinus, Populus, Ulmus. b)Reforest areas without vegetation.

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Lessons learnt

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Image gallery


Aerial view of the area of action
Aerial view of the area of action
Aerial view of the area of action
Photo of embankments
Scheme of changes in the riparian vegetation
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Catchment and subcatchment

Catchment

River basin district C.H.Ebro
River basin Ebro

Subcatchment

River name Cinca
Area category
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 120 m
0.12 km
12,000 cm
Dominant geology
Ecoregion Ibero-Macaronesian
Dominant land cover Plantation forestry, Extensive agriculture
Waterbody ID



Site

Name
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
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) 15000 m
15 km
1,500,000 cm
Project started
Works started
Works completed
Project completed
Total cost category 1000 - 5000 k€
Total cost (k€) 1700 k€
1,700,000 €
Benefit to cost ratio
Funding sources 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
Post-project management and maintenance
Monitoring



Reasons for river restoration

Mitigation of a pressure Flood defence
Hydromorphology Width & depth variation, Structure & condition of riparian zones
Biology
Physico-chemical
Other reasons for the project


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor Displacement of flood defenses, Elimination of secondary speck to increase the floodplain, Restoring riparian vegetation
Planform / Channel pattern
Other
Non-structural measures
Management interventions
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

Link Description
http://oph.chebro.es/DOCUMENTACION/Restauracion/PlazoActuaciones.pdf Project information

Supplementary Information

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