Case study:Revitalisation of Nagy-Pándzsa watersystem

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Location: 47° 39' 3", 17° 36' 54"
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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 Emil
Main contact surname Janák
Main contact user ID
Contact organisation North-Transdanubian Water Management Directorate
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


River basin district Danube
River basin Marcal


River name Nagy-Pándzsa
Area category 100 - 1000 km²
Area (km2) 192 km²
19,200 ha
Maximum altitude category 200 - 500 m
Maximum altitude (m)
Dominant geology Calcareous
Ecoregion Hungarian Lowlands
Dominant land cover Intensive agriculture, Urban
Waterbody ID


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

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 €
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
Stakeholder engagement and communication North-Transdanubian Water Management Directorate
Works and works supervision North-Transdanubian Water Management Directorate
Post-project management and maintenance North-Transdanubian Water Management Directorate
Monitoring North-Transdanubian Water Management Directorate

Reasons for river restoration

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


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


Hydromorphological 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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Physico-chemical 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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Monitoring documents

Additional documents and videos

Additional links and references

Link Description Centre for Ecological Research HAS - The institute network of the Hungarian Academy of Sciences is set to produce values for both national and international success in Hungarian and universal science. The Centre's primary aim is to play a fundamental role in promoting the common weal and in building the foundation for the future through valuable scientific achievements based on highly promising discovery research. The Centre consists of three institutes, the Balaton Limnological Institute, the Danube Research Institute and the Institute of Ecology and Botany. General Driectorate of Water Management - General Directorate of Water Management (OVF) is a background institution of the Ministry of Interior. It supports the work of the Minister regarding the flood management. Its main task is the coordination of flood hazard prevention, river control and flood protection activities, and the management of development projects concerning water bodies. OVF has 12 regional directorates which are coordinating the catchment management planning according to the requirements of the EU WFD. They take preventive and protective measures against floods, carry out status assessments and are the leading organizations in the management and implementation of river restoration projects. National Institute for Environment - The National Institute for Environment (NeKI) is a background institution of the Ministry of Rural Development, and assists the Minister in the various duties of water management, environmental protection and nature conservation. NeKI has 12 regional branch offices, and is in charge of the strategies, policies and regulations regarding the management and exploitation of water resources. It performs environmental monitoring, status and impact assessments, administrates the national network for hydrological, hydrographical, hydrogeological and quality measurements of public waters. NeKI also coordinates the planning and the implementation of national and EU projects. en.php National Inspectorate for Environment, Nature and Water - The Inspectorate attends to administrational and water management matters, to analyses and consideration of law proposals in its field, and it supervises its 10 regional inspectorates as well. It coordinates international co-operations and takes part in the tasks connected to the EU integration. The regional inspectorates and two sub-offices are the 'green authorities' at first instance. The regional inspectorates are responsible for registration, monitoring, protection, conservation, reconstruction, rehabilitation, authorization and penalty processes regarding environment, nature and water in their assigned territory. WWF Hungary - WWF Hungary is the Hungarian arm of the WWF Network and was founded in 1991. It's main aims are protecting the biodiversity of Hungary by focusing on freshwaters, forests and priority species. They are also fighting against climate change and they support WWF's conservation work as well. They participated in the development of the Danube Strategy, as well as organized conservation projects on Hungary's two largest rivers, the Tisza and the Danube. International Commission for the Protection of the Danube River (ICPDR) - The ICPDR is an International Organisation consisting of 14 cooperating states and the European Union. Since its establishment in 1998, the ICPDR has grown into one of the largest and most active international bodies of river basin management expertise in Europe. The ICPDR deals not only with the Danube itself, but also with the whole Danube River Basin, which includes its tributaries and the ground water resources.

Supplementary Information

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