Pilot Catchment in Hungary

The Nagykunsági Basin is one of the sub-basins of Tisza River. Most of the sub-basin’s water bodies have a bad ecological status, and are regularly affected by floods, droughts, and water quality problems occur almost every year.   

These issues are partially included in the strategic planning documents such as: River Basin Management Plan; Flood Risk Management Plan, Drougth Impact Mitigation Plan.


Characteristic Unit Value
Character of the catchment   Lowland
Catchment size: km2 2 965
Average flow low/avg/high m3/s 0/20/30
Extreme flow low/high m3/s 0/44
Annual precipitation low/avg/high mm 382,9/513,4/929,5
Annual air temperature min/avg/max ºC -24,8/10,7/40,8
Agriculture area % 73
Urban area % 5
Forest area % 5
Open Water area % 1
Flooded area (1/100 years) km2 430,5 (excess water)
Artificial drainage area km2 2300
Ecological status No.: good/bad water body 5/21
Major problems to achieve good ecological status   Biology, hydromorphology,

 The catchment area will be a testing ground for the GIS valorization tool for mapping potential locations of N(S)WRM as well as static tools for calculating the static effectiveness of those measures. Data obtained for the catchment will be used for testing dynamic tools (methodology) for calculating the dynamic system effectives of N(S)WRM  dynamic process using the HEC-RAS model.  Finally a Decision Support System for improving N(S)WRM planning will be prepared on the basis of the lessons learned from this pilot catchment. 

The analysis of Nagykunsági sub-basin will result in the improvement of the created tool functionality and design. Valorization maps for various problems (flood, drought, water quantity allocation) will be prepared for this catchment. The experience gained during the tool application will be used to prepare guidelines for improving water balance and nutrient mitigation by applying a system of N(S)WRMs and an implementation plan taking into account the relationship between the cost and effect. Stakeholder integration will occur through their engagement during the development of the tool.