Case study:Improvement of ecological state of the river Pisuerga between the dam of Aguilar de Campo and Alar del Rey (Palencia) - 1st Stage.

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Location: 42° 43' 25.73" N, 4° 17' 7.28" W

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Project overview

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Status	Complete
Project web site
Themes
Country	Spain
Main contact forename	Ignacio
Main contact surname	Rodríquez
Main contact user ID
Contact organisation	Confederación Hidrográfica del Duero
Contact organisation web site
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The Pisuerga River has a high regulation of the flow regime, which determines an artificial and seasoned flow regime. Also, the massive release of sediments is affected by the presence of weirs, which difficult and blocks the mobility for fish upstream migration and habitat availability. This is the first stage of the total project which involves mitigation and preventive measures. The global objectives are: Improve aquatic habitats and recover aquatic communities; improve longitudinal connectivity; stream bank stabilization; improve the structure and composition of the vegetation. The measures comprise earthworks for bank stabilization (to reduce erosion and sediment input, and facilitate the establishment of vegetation), the installation of fish pass and the rehabilitation of spawning areas. The project has a total budget of 3.135.508 € and is financed by the Ministry of Environment, as part of the National Strategy for River Restoration.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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Catchment

River basin district	C.H.Duero
River basin	Pisuerga

Subcatchment

River name	Pisuerga
Area category	more than 10000 km²
Area (km2)
Maximum altitude category	500 - 1000 m
Maximum altitude (m)
Dominant geology	Calcareous
Ecoregion	Ibero-Macaronesian
Dominant land cover	Extensive agriculture
Waterbody ID

Site

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Name	Las Loras
WFD water body codes	12362
WFD (national) typology
WFD water body name
Pre-project morphology	Sinuous
Reference morphology	Sinuous
Desired post project morphology
Heavily modified water body	true
National/international site designation
Local/regional site designations	Site of Community Importance
Protected species present
Invasive species present
Species of interest
Dominant hydrology	Artificially regulated
Dominant substrate
River corridor land use	Extensive agriculture
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

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Reach length directly affected (m)
Project started	2009/01/01
Works started
Works completed	2009/11/01
Project completed
Total cost category	1000 - 5000 k€
Total cost (k€)	3135 k€3,135,000 € <br />
Benefit to cost ratio
Funding sources	Water Programe, 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			Confederación Hidrográfica del Duero
Post-project management and maintenance
Monitoring

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology	Quantity & dynamics of flow, Continuity for organisms, Continuity of sediment transport, Structure & condition of riparian zones
Biology	Fish: Abundance
Physico-chemical
Other reasons for the project	Recreation

Measures

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Structural measures
Bank/bed modifications	Improve the structure and composition of the vegetation, Streambank stabilisation
Floodplain / River corridor	Improve longitudinal connectivity
Planform / Channel pattern
Other	Improve aquatic habitats and recover aquatic communities
Non-structural measures
Management interventions
Social measures (incl. engagement)	Improved network of trails, Information panels for people
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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Image gallery

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Map of the actuation area

Aerial view of Pisuerga River

Pisuerga River channel

Weir in Pisuerga River

Aguilar de Campoo dam

Additional documents and videos

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Additional documentation (in Spanish)

Additional links and references

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Link	Description

Supplementary Information

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