Case study:Rehabilitation of Benta stream

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Location: 47° 19' 7.50" N, 18° 56' 12.57" E

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Project overview

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Status	Complete
Project web site
Themes	Flood risk management, Habitat and biodiversity
Country	Hungary
Main contact forename	Norbertné
Main contact surname	Józsa
Main contact user ID
Contact organisation	Middle-Danube-Valley Water Management Directorate
Contact organisation web site
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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Catchment

River basin district	Danube
River basin	Danube

Subcatchment

River name	Benta stream
Area category	100 - 1000 km²
Area (km2)	410 km²41,000 ha <br />
Maximum altitude category	200 - 500 m
Maximum altitude (m)
Dominant geology	Calcareous
Ecoregion	Hungarian Lowlands
Dominant land cover	Urban, Woodland
Waterbody ID

Site

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Name	Benta stream
WFD water body codes	AEP318
WFD (national) typology	18
WFD water body name
Pre-project morphology	Single channel, Straight, Revetments
Reference morphology	Single channel, Sinuous
Desired post project morphology
Heavily modified water body	false
National/international site designation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology	Permanent lotic
Dominant substrate	Gravel
River corridor land use	Urban, Industry, Intensive agriculture
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
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	2008/08/01
Works started	2009/06/01
Works completed	2011/05/01
Project completed
Total cost category	1000 - 5000 k€
Total cost (k€)	2463 k€2,463,000 € <br />
Benefit to cost ratio
Funding sources	Operational Program of New Hungary Development Plan, EU funded

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design			Middle-Danube-Valley Water Management Directorate
Stakeholder engagement and communication			Middle-Danube-Valley Water Management Directorate
Works and works supervision			Middle-Danube-Valley Water Management Directorate
Post-project management and maintenance			Middle-Danube-Valley Water Management Directorate
Monitoring			Middle-Danube-Valley Water Management Directorate

Reasons for river restoration

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Mitigation of a pressure	Flood defence, Riparian development
Hydromorphology	Quantity & dynamics of flow, Structure & condition of riparian zones
Biology	Fish: Species composition
Physico-chemical
Other reasons for the project	Flood risk management, Landscape enhancement, Community demand

Measures

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Structural measures
Bank/bed modifications	Renewal of reventments, Removal of sediment, Planting, Creation of fish spawn nursing places, Creation of piplines
Floodplain / River corridor
Planform / Channel pattern
Other	Reparation of sluice gates
Non-structural measures
Management interventions	channel maintenance
Social measures (incl. engagement)	Floodprotection, landenhancement
Other	Information provision

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
Quantity & dynamics of flow	Yes	Yes				Improvement
Structure & condition of riparian zones	Yes	Yes				Improvement

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
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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
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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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Benta stream_1

Benta stram_2

Additional documents and videos

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Additional links and references

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Link	Description

Supplementary Information

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