Case study:Conservation of alluvial

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Location: 46° 1' 23.16" N, 18° 41' 22.16" E

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity
Country	Hungary
Main contact forename	Viktoria
Main contact surname	Siposs
Main contact user ID
Contact organisation	WWF Hungary, Danube Drava National Park Directorate
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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Monitoring surveys and results

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Catchment and subcatchment

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Catchment

River basin district	Danube
River basin	Danube

Subcatchment

River name	Sava River
Area category	more than 10000 km²
Area (km2)
Maximum altitude category	500 - 1000 m
Maximum altitude (m)	833833 m <br />0.833 km <br />83,300 cm <br />
Dominant geology	Calcareous
Ecoregion	Dinaric Western Balkan, Alps
Dominant land cover
Waterbody ID

Other case studies in this subcatchment: Hainburg River Restoration, INTERREG MED WETNET - Memoradum on Participation in Wetland Conservation in Ljubljansko Barje Nature Park, Marsh protection in Egyek–Pusztakócs, National Park Danube-Auen, Regelsbrunner Aue, Renaturation of Stržen's riverbed on intermittent Cerknica Lake, The Bulgarian Wetlands Restoration and Pollution Reduction Project, Witzelsdorf Pilot Project

Site

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Name	Szabadság-sziget (Liberty Island)
WFD water body codes	AEP445
WFD (national) typology
WFD water body name
Pre-project morphology	Artifical oxbow completely cut-off from the main river; Silted up significantly
Reference morphology	Sidearm
Desired post project morphology
Heavily modified water body	No
National/international site designation	EU - Special Protected Area
Local/regional site designations	Natura 2000; National Park
Protected species present	No
Invasive species present	No
Species of interest
Dominant hydrology	Permanent lentic
Dominant substrate	Sand, Gravel
River corridor land use	Intensive agriculture, Woodland, Urban
Average bankfull channel width category
Average bankfull channel width (m)
Average bankfull channel depth category	5 - 10 m
Average bankfull channel depth (m)
Mean discharge category	more than 1000 m³/s
Mean annual discharge (m3/s)	28232,823 m³/s <br />2,823,000 l/s <br />
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)

Project background

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Works completed
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Total cost (k€)
Benefit to cost ratio
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Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design
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Works and works supervision
Post-project management and maintenance
Monitoring

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
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Measures

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Structural measures
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Floodplain / River corridor
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Monitoring

Hydromorphological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
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Biological quality elements

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quality elements

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Physico-chemical quality elements

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quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents

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Additional links and references

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Supplementary Information

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