Case study:Restoration project of riparian buffer of the Sesia river

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Location: 45° 25' 42.32" N, 8° 38' 46.89" E

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Project overview

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Status	Planned
Project web site
Themes	Flood risk management, Habitat and biodiversity, Water quality
Country	Italy
Main contact forename	Raffaella
Main contact surname	Pagano
Main contact user ID
Contact organisation	provincia di vercelli
Contact organisation web site	http://www.provincia.vercelli.it
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 project starts from the analysis of the situation of the River Sesia: The WFD and the 2nd Management Plan of the Hydrographic District of the Po River identify the need for an adaptation of the characteristics of the watercourse to the introduced objectives, by 2021. The quality of the River Sesia from Vercelli to the confluence with the Po is sufficient, unlike the upstream part where it is good. In fact, anthropogenic pressures such as civil, industrial and agricultural waste affect the parameters of water quality. Furthermore, in the project area there is evidence of a loss of biodiversity and lack of habitats and characteristic ecotypes caused by the presence of alien plants (such as Reynoutria japonica). The framework of the project is to limit the presence of the alien species (according to Black list of the exotic species of the Piedmont Region) and at the same time reintroduce arboreal-shrub areas and meadows both to create competition with the R. japonica and to reconstruct the riparian buffers, facing the problem of the destabilization and erosion of the banks caused by the infesting species and the lack of riparian vegetation. The project therefore envisages two interventions: 1) Control of Reynoutria japonica and creation of an arboreal-shrub buffer zone in the Brarola area (surface area of 6,720 square meters). The area of intervention, about 2 km from the City of Vercelli, is included within the Lama del Badiotto and Garzaia della Brarola SPA managed by the Ticino Park and Lake Maggiore. At the end of the Control period of R. japonica, the project foresees to plant Populus alba, Alnus glutinosa, Prunus padus and Sambucus nigra for a density of 1667 plants per hectare. 2) Control of Reynoutria japonica and creation of grassland and shrub-land areas in competition with the settlement of Reynoutria japonica in the locality of J. Korczak Park (surface area 87,700 square meters). At the end of the control period of R. japonica, a lawn will be sown using graminaceous and leguminous plants with high competitive capacity. The project will also proceed with the planting of Populus alba, Alnus glutinosa, Prunus padus, Salix alba, Ulmus laevis, Sambucus nigra and Viburnum opulus. Overall, the intervention, in addition to improving the quality of the river protecting biodiversity, also aims to restore the city to a usable area. Project partners: City of Vercelli (lead), Province of Vercelli, Management body of the Protected Areas of Ticino and Lake Maggiore.

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Po Basin River basin Sesia Subcatchment River name Sesia Area category Area (km2) Maximum altitude category 500 - 1000 m Maximum altitude (m) 20002,000 m <br />2 km <br />200,000 cm <br /> Dominant geology sand and gravel Ecoregion Italy and Corsica Dominant land cover intensive agriculture (rice) Waterbody ID Other case studies in this subcatchment: LIFE ECORICE - Vercelli rice fields, Oasi naturale delle pittime di Cascina Oschiena Site Edit site Name Sesia river (Municipality of Vercelli – location Brarola and Korczak WFD water body codes WFD (national) typology WFD water body name SESIA Pre-project morphology Single channel Reference morphology Desired post project morphology Heavily modified water body No National/international site designation EU - Special Protected Area Local/regional site designations SPA IT1120025 “Lama del Badiotto e Garzaia della Brarola” Protected species present Yes Invasive species present Yes Species of interest Reynoutria japonica Dominant hydrology Dominant substrate Sand River corridor land use Urban and 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 Edit project background Reach length directly affected (m) Project started Works started Works completed Project completed Total cost category Total cost (k€) 255.000255 k€ <br />255,000 € <br /> Benefit to cost ratio Funding sources Regione Piemonte – Direzione ambiente, governo e tutela del territorio – Settore Tutela delle Acque [Bilancio finanziario 2018-2020 nell’ambito della Missione 09 “Sviluppo sostenibile e tutela del territorio e del mare”, Programma 06 “Tutela delle risorse idriche”. 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 Edit reasons for restoration Mitigation of a pressure Presence of invasive species and biodiversity loss Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Control of invasive species; planting riparian vegetation Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit 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 Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information