Length2.9 million m
863,636African elephant heights
3.1 millionUmbrellas
Europe's second-longest river
Photo from Wikimedia Commons
Danube River
Europe's second-longest river, passing through ten countries/Rivers
The Danube flows 2,850 km from the Black Forest in Germany to the Black Sea in Romania, passing through or bordering ten countries, more than any other river in the world. Its basin covers 801,000 square kilometers and is home to about 80 million people. The Danube passes through four capital cities (Vienna, Bratislava, Budapest, and Belgrade), more than any other river. It has inspired countless works of art and music, most famously Johann Strauss II's waltz 'The Blue Danube,' though the river is rarely actually blue.
Measurements
Drainage basin801 billion m2
89 trillionPhone screens
641 millionOlympic pool surfaces
801,000 square kilometers
Average discharge6,500 m3
1.3 billionGumballs
11.6 millionthsSydney Harbours
19620-foot shipping containers
Per second at the mouth
Source elevation1,078 m
2.2 hundredthsBahrain lengths
107,800Thumb tack lengths
216 millionSpider silk threads
Black Forest, Germany
Width at Budapest550 m
1,964Football lengths
102 quadrillionCarbon nuclei
28,871Penny diameters
Through the Hungarian capital
Danube Delta area4.2 billion m2
6 thousandthsTexases
8.38Lake Tahoe surfaces
902 billionCredit cards
4,150 km2 wetland at the Black Sea