Example, please enter your data andpictureDr.-Ing. Péter Kozák Ph.D.Head of Department of Water Management andRiver Basin DevelopmentDirectorate for Envionmental Protection andWater Management of Lower Tisa DistrictSzeged, Hungary

Managing Excess Water andPluvial Flooding in Hungary

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,� in connection with prevention,� in connection with mitigation.

Managing Excess Water and Pluvial Flooding inHungary

Flooded areas in Hungary beforethe beginning of river regulationworks (1846.)

Temporary flooded areas

Permanetly flooded areas

Managing Excess Water and Pluvial Flooding inHungary

Natural circumstances:

Managing Excess Water and Pluvial Flooding inHungary

Natural circumstances:

Managing Excess Water and Pluvial Flooding inHungary

Foreword:� A system of the ownership of a drainage system has a strong

connection with the land ownership. The drainage systems haveproperty of municipalities in the settlements.

� Types of owners:•Private,•Municipality,•State – Goverment,

Managing Excess Water and Pluvial Flooding inHungary

Foreword:� Types of operators:

•Private,•Municipality,•State – Water Boards,•State - Directorates

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,� in connection with prevention,� in connection with mitigation.

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,

The assessment of the water balances was developed, which cangive general information about current status and the forecastedstatus of water balances to the experts both on regional and locallevel. The method based on the continuous water balance index,which was developed by Dr. Imre Pálfai.

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,Hungary – continuous water balance assessment:2 parts:

1. General overview:• Precipitation : average values, differences from the

averages, Air temperatue : extereme values, averagevalues,

• Soil moisture, Ground water: actuall levels, differencesform the averages,

• Excess water status: inundated area by excess waters

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,Hungary – continuous water balance assessment:2 parts:

2. Forecasts:• 2.1. Meteorological: cooperation with Hungarian

Meteorological Service,• 2.2. Water balance conditions: Continuous Water Balance

Index (CWBI),• 2.3. Drought forecast: PAI – PDI• 2.4. Excess water forecast.

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,Hungary – continuous water balance assessment:2 parts:

2.2. Continuous Water Balance Index (CWBI):depends on:

• Increase the CWBI: Previous 12 month precipitationsummary,

• Decrease the CWBI: evapotranspration (calculated value).

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,Hungary – continuous water balance assessment:2 parts:

2.2. Continuous Water Balance Index (CWBI):

Evaluation of CWBI:• If the CWBI < 1 => dry period• If the CWBI < 1 => wet period.

Managing Excess Water and Pluvial Flooding inHungary

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,� in connection with prevention,� in connection with mitigation.

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with prevention,The tasks of prevention for every owner:

to provide the continuous maintenance activities:• with structural tools:

• continuous activity for the providing the capacity ofdrainage systems, sluices, pumping stations,reservoirs,

• continuous cooperation on the relevant infrastructuralinvestments in the basins

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with prevention,The tasks of prevention for every owner:

to provide the continuous maintenance activities:• with non-structural tools:

– work out the Defence Plans,– continuous cooperation on the relevant infrastructural

investments in the basins

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with forecasts,� in connection with prevention,� in connection with mitigation.

Managing Excess Water and Pluvial Flooding inHungary

Managing of excess waters:� in connection with mitigation.The tasks of mitigation for every owner:

• cutting of sludge and vegetation from the canals,• repairing of the sluices and gates during the canals,• making efforts to mitigate the surface runoff from the

upper region of the basins

Managing Excess Water and Pluvial Flooding inHungary

Managing Excess Water and Pluvial Flooding inHungary

Thanks for your kind attention!