 On same stage, the Vienna Symphony Orchestra performed one of its open-air concerts on Monday evening.2009
The 2009 Donauinselfest was on the verge of being canceled due to flooding.It had rained consistently for the last few days, making it necessary to open flood protection, which leveled out the water level on the sides of the Donauinsel, but being enough to flood the side paths, that would have provided an important escape route should it be necessary.