6. Coincidence of Flood Flow of the Danube River and Its Tributaries

The flood coincidence methodology within this contribution gives a statistically sound analysis concerning an important feature of flood genesis. The whole Danube reach is covered by such research, which reveals flood behaviour along the Danube impressively. The practical results could serve as a tool for experts and decision-makers, and aid in determining how to improve flood control and flood plain management and how to arrange this task for the greatest benefit. The fact that, more or less, no significant trends in flood behaviour were detected along the Danube River is worth mentioning. It should be considered that human action and climate change as well could change this substantially. Besides other flood characteristics, this could well change the coincidence behaviour of the Danube and its tributaries. To judge this, the evaluation of historical data is of great importance.