Case study:Rio Sant'Ambrogio restoration project

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Location: 45° 35' 19.25" N, 12° 5' 52.21" E

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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 - agriculture, Land use management - forestry, Water quality
Country	Italy
Main contact forename	Paolo
Main contact surname	Cornelio
Main contact user ID
Contact organisation	Consorzio di Bonifica Acque Risorgive
Contact organisation web site	http://http://www.acquerisorgive.it/
Partner organisations
This is a parent project encompassing the following projects

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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	Alpi Orientali
River basin	Bacino scolante della Laguna di Venezia

Subcatchment

River name	Bacino scolante della Laguna di Venezia
Area category	1000 - 10000 km²
Area (km2)	2,0382,038 km² <br />203,800 ha <br />
Maximum altitude category	100 - 200 m
Maximum altitude (m)
Dominant geology
Ecoregion	Italy and Corsica
Dominant land cover	Intensive agriculture (arable)
Waterbody ID

Other case studies in this subcatchment: Pagana canal restoration project, Rio San Martino and Piovega di Scandolara restoration project, Rio Sant'Ambrogio restoration project, Salzano wetland and Marzenego river restoration project, Scolo Desolino restoration project, Zero river restoration project

Site

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Name	Rio Sant'Ambrogio
WFD water body codes	689_10
WFD (national) typology
WFD water body name	RioPiovega di Levada - San Ambrogio
Pre-project morphology	Artificial bed
Reference morphology	Low gradient passively meandering
Desired post project morphology
Heavily modified water body	No
National/international site designation
Local/regional site designations
Protected species present	Yes
Invasive species present	Yes
Species of interest
Dominant hydrology	Artificially regulated
Dominant substrate	Sand
River corridor land use	Intensive agriculture (arable)
Average bankfull channel width category	2 - 5 m
Average bankfull channel width (m)
Average bankfull channel depth category	0.5 - 2 m
Average bankfull channel depth (m)
Mean discharge category	0.1 - 1.0 m³/s
Mean annual discharge (m3/s)
Average channel gradient category	0.001 - 0.01
Average channel gradient
Average unit stream power (W/m2)

Project background

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Reach length directly affected (m)	3,1003,100 m <br />3.1 km <br />310,000 cm <br />
Project started	2005
Works started
Works completed
Project completed	2009/03/01
Total cost category	1 - 10 k€
Total cost (k€)
Benefit to cost ratio
Funding sources	Veneto Region - “Piano per la prevenzione dell’inquinamento ed il risanamento delle acque del bacino idrografico immediatamente sversante in Laguna – Piano Direttore 2000”

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	Nutrient removal to reduce eutrophication, reduce flood risk
Hydromorphology	Create a more natural channel morphology
Biology	Increase ecological status of Fish, Macrophytes, Macrozoobenthos
Physico-chemical	Reduce Nitrogen, Phosphorous and Organic pollution
Other reasons for the project	Increase fruition and biodiversity in general in a agricultural and urban contest

Measures

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Structural measures
Bank/bed modifications	Bed enlargement
Floodplain / River corridor	Creation and riconnection of floodplain and new buffer strips
Planform / Channel pattern	Channel naturalisation; Creation of new meandering channel
Other	Creation of in-stream wetland
Non-structural measures
Management interventions	Adoption of new practices for acquatic vegetation management
Social measures (incl. engagement)	Involvement of farmers in buffer strips plantation
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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Additional documents and videos

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Additional links and references

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Link	Description
http://http://http://www.cirf.org/rf2012/atti/rischio Cornelio.pdf	Presentation describing the project presented at the II Conference on river restoration in Italy (2012) - In Italian
http://http://www.acquerisorgive.it/page.asp?m=18	A website section dedicated to river restoration projects, studies and monitoring results by Consorzio Acque Risorgive

Supplementary Information

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