Which European capital city lies at the confluence of the rivers Danube and Sava?
Sava established by Bosnia-Herzegovina, Croatia, Slovenia and Serbia and Montenegro in 2005, is tasked with establishment of sustainable management of surface water and groundwater resources in the Sava River basin. The Sava is navigable to larger vessels for between its confluence with the Danube in Belgrade, Serbia and Galdovo Bridge in Sisak, Croatia, upstream from confluence of Sava and Kupa rivers. The confluence marks the westernmost point of the river course designated as a Class IV international waterway in compliance with the United Nations Economic Commission for Europe's European Agreement on Main Inland Waterways of International Importance (AGN). The classification means
Sava separating the Julian Alps from the Karavanke mountain range. The spring is located near the Slovene-Italian border at above sea level, in a drainage divide between the Adriatic and Danube basins. The Sava Dolinka spring is fed by groundwater possibly exhibiting bifurcation of source karst aquifer to the Sava and Soča basins. Nadiža creek, a short losing stream flowing nearby, is the source of Zelenci Pools water. The Sava Dolinka is considered the Sava's initial, segment. The Sava Bohinjka originates in Ribčev Laz, at the confluence of the Jezernica, a short watercourse flowing out from Lake Bohinj and the Mostnica