Case study:Environmental restoration of the lower section of the river Narcea in the municipalities of Salas and Pravia (Asturias)

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Project overview

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Status Complete
Project web site
Themes
Country Spain
Main contact forename Juan Antonio
Main contact surname Martín Ventura
Main contact user ID
Contact organisation C.H.Cantábrico
Contact organisation web site
Partner organisations
This is a parent project
encompassing the following
projects 		No
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Project summary

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Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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(affects all case studies in this subcatchment)

Catchment

River basin district C.H.Cantábrico
River basin Narcea

Subcatchment

River name Narcea
Area category
Area (km2)
Maximum altitude category Less than 100 m
Maximum altitude (m) 50 m0.05 km <br />5,000 cm <br />
Dominant geology Siliceous, Calcareous
Ecoregion Ibero-Macaronesian
Dominant land cover
Waterbody ID



Site

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Name Tramo bajo del río Narcea entre Salas y Pravia
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology Sinuous, Entrenched
Reference morphology Sinuous
Desired post project morphology
Heavily modified water body
National/international site designation
Local/regional site designations Site of Community Importance
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 0.003
Average unit stream power (W/m2)


Project background

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Reach length directly affected (m) 17000 m17 km <br />1,700,000 cm <br />
Project started 2008/01/01
Works started
Works completed
Project completed
Total cost category
Total cost (k€)
Benefit to cost ratio
Funding sources C.H.Cantábrico

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

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Mitigation of a pressure Flood defence
Hydromorphology Channel pattern/planform, Structure & condition of riparian zones, Continuity of sediment transport
Biology
Physico-chemical
Other reasons for the project Recreation


Measures

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Structural measures
Bank/bed modifications Revetmens with local species, Removal of exotic plants, New bioengineering elements in order to stabilize slope banks
Floodplain / River corridor Riparian tree planting, Silvicultural treatments
Planform / Channel pattern Re-instatement of old course (meander)
Other
Non-structural measures
Management interventions Promotion and management of tourism in the river
Social measures (incl. engagement) Information panels for people, New pahts near the river
Other


Monitoring

Hydromorphological quality elements

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

Biological quality elements

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

Physico-chemical quality elements

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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

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


Monitoring documents

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Additional links and references

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Link Description

Supplementary Information

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