Case study:Habitat improvement project in Segre river, in Alòs de Balaguer

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Location: 41° 54' 38", 0° 57' 39"
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Project overview

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Status Complete
Project web site
Themes
Country Spain
Main contact forename ACA
Main contact surname ACA
Main contact user ID
Contact organisation ACA
Contact organisation web site http://aca-web.gencat.cat/aca/appmanager/aca/aca;jsessionid=J1LPQLnWWZ89t8G1mK5X0lxCJfBcpvn1JRz0vKts2ZJ4RVHKk05S!1233888255!NONE? nfpb=true& pageLabel=portals ACA portal page 1&profileLocale=en
Partner organisations
Parent multi-site project
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encompassing the following
projects
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Project summary

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The project applied to the 2008 call for subsidies for river conservation and recovery of the Catalan Water Agency (Agencia Catalana del Agua - ACA). It aimed at improving river and riparian habitats and fauna, focusing on water quality, morphological improvements of the section as well as bank erosion control. The project had a total budget of 153.592 € and was financed by the Municipality of Alòs de Balaguer and by the ACA.

Monitoring surveys and results

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Image gallery


Area of action in Segre River
Area of action in Segre River
Area of action in Segre River
Area of action in Segre River
Area of action in Segre River
Restoration works in river
Restoration works in river
Zone after restoration
Zone after restoration
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Catchment and subcatchment

Catchment

River basin district C.H.Ebro
River basin Ebro

Subcatchment

River name Segre
Area category
Area (km2)
Maximum altitude category 200 - 500 m
Maximum altitude (m) 297 m
0.297 km
29,700 cm
Dominant geology Calcareous
Ecoregion Ibero-Macaronesian
Dominant land cover
Waterbody ID



Site

Name Alòs de Balaguer
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology
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 10 - 50 m
Average bankfull channel width (m) 50
50 m
0.05 km
5,000 cm
Average bankfull channel depth category
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s) 4.02
4.02 m³/s
4,020 l/s
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)


Project background

Reach length directly affected (m) 4500 m
4.5 km
450,000 cm
Project started
Works started
Works completed 2011/01/01
Project completed
Total cost category 100 - 500 k€
Total cost (k€) 153 k€
153,000 €
Benefit to cost ratio
Funding sources ACA, Municipality of Alòs de Balaguer

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 Societat de Pescadors d'Alòs de Balaguer
Post-project management and maintenance
Monitoring ACA



Reasons for river restoration

Mitigation of a pressure
Hydromorphology Channel pattern/planform
Biology
Physico-chemical
Other reasons for the project Flood risk management, Recreation


Measures

Structural measures
Bank/bed modifications Gravel bar
Floodplain / River corridor
Planform / Channel pattern Re-instatement of old course, Channel narrowing
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
Channel pattern/planform Yes Yes Yes Improvement

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
Flood risk management Yes Yes Yes Improvement


Monitoring documents



Additional documents and videos


Additional links and references

Link Description
http://www.ccnoguera.cat/alosbalaguer/
http://www.pescalos.org/

Supplementary Information

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