Case study:Restoration of Szárazerdei river branch

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Location: 47° 58' 30.59" N, 17° 17' 56.18" 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	Emil
Main contact surname	Janák
Main contact user ID
Contact organisation	North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu
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 1,5 km long Szárazerdei river branch of the Danube was restored and a 1,5 ha open water surface was created in the special Slovakian-Hungarian Transboundary Danube Wetland area (Szigetköz). Feeding and nesting conditions for targeted bird species were restored.

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	Danube River Basin District
River basin	Danube

Subcatchment

River name	Sziget-köz
Area category	more than 10000 km²
Area (km2)	120000 km²12,000,000 ha <br />
Maximum altitude category	100 - 200 m
Maximum altitude (m)
Dominant geology	Calcareous
Ecoregion	Hungarian Lowlands
Dominant land cover	Wetland, Woodland
Waterbody ID

Site

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Name	Dunakiliti
WFD water body codes	AEP443
WFD (national) typology
WFD water body name
Pre-project morphology	Sinuous, Decreased water supply, high macrophyte coverage, Oxbow
Reference morphology	Braided, Sidearm
Desired post project morphology
Heavily modified water body	Yes
National/international site designation	EU - Special Protected Area
Local/regional site designations
Protected species present	No
Invasive species present	No
Species of interest
Dominant hydrology	Permanent lentic
Dominant substrate	Gravel, Silt
River corridor land use	Woodland, Wetland
Average bankfull channel width category	more than 50 m
Average bankfull channel width (m)
Average bankfull channel depth category	5 - 10 m
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)	1500 m1.5 km <br />150,000 cm <br />
Project started	2009/01/01
Works started
Works completed	2011/11/01
Project completed
Total cost category	100 - 500 k€
Total cost (k€)	147 k€147,000 € <br />
Benefit to cost ratio
Funding sources	LIFE+ (LIFE07 NAT/SK/000707)

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design			North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu	Emil	Janák
Stakeholder engagement and communication			North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu	Emil	Janák
Works and works supervision			North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu	Emil	Janák
Post-project management and maintenance
Monitoring

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
Other reasons for the project

Measures

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Structural measures
Bank/bed modifications
Floodplain / River corridor
Planform / Channel pattern
Other
Non-structural measures
Management interventions	Ensuring biodiversity
Social measures (incl. engagement)
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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

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Physico-chemical quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents

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Image gallery

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Additional links and references

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Supplementary Information

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