Case study:Revitalisation of Nagy-Pándzsa watersystem

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Location: 47° 39' 1.67" N, 17° 36' 53.20" E
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Project overview

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Status Complete
Project web site http://www.edukovizig.hu/node/941
Themes Flood risk management, 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
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Project summary

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Restoring the Nagy-Pándzsa watersystem's transport capacity and the reconstruction of the Helbényi sluice at the Holt-Marcal estuarine will improve flood protection, contribute to the improvement of overall water quality and pollution reduction. as A result of the development the flora and the fauna of the water will regenerate , safe water supply for fish ponds will be ensured.

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 Marcal

Subcatchment

River name Nagy-Pándzsa
Area category 100 - 1000 km²
Area (km2) 192 km²19,200 ha <br />
Maximum altitude category 200 - 500 m
Maximum altitude (m)
Dominant geology Calcareous
Ecoregion Hungarian Lowlands
Dominant land cover Intensive agriculture, Urban
Waterbody ID



Site

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Name Pannonhalma
WFD water body codes AEP751
WFD (national) typology 9
WFD water body name
Pre-project morphology Single channel
Reference morphology Single channel
Desired post project morphology
Heavily modified water body false
National/international site designation
Local/regional site designations Area of Special Conservation Interest, Natura 2000
Protected species present
Invasive species present
Species of interest
Dominant hydrology Permanent lotic
Dominant substrate Gravel
River corridor land use Intensive agriculture
Average bankfull channel width category Less than 2 m
Average bankfull channel width (m)
Average bankfull channel depth category Less than 0.5 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 2008/12/01
Works started 2009/11/01
Works completed 2011/11/01
Project completed
Total cost category 100 - 500 k€
Total cost (k€) 345 k€345,000 € <br />
Benefit to cost ratio
Funding sources 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 North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu
Stakeholder engagement and communication North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu
Works and works supervision North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu
Post-project management and maintenance North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu
Monitoring North-Transdanubian Water Management Directorate titkarsag@edukovizig.hu



Reasons for river restoration

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


Measures

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Structural measures
Bank/bed modifications Renewal of reventments, Removal of sediment
Floodplain / River corridor Creation of reservoirs
Planform / Channel pattern
Other Reparation of sluice gates
Non-structural measures
Management interventions Watersupply for Natura 2000 habitats
Social measures (incl. engagement) Floodprotection
Other Information provision, Consultation


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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Additional links and references

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Link Description

Supplementary Information

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