Wikipedia
Bolečica
The Bolečica ( Serbian Cyrillic: Болечица) is a short river in north-central Serbia, a 12 km-long right tributary to the Danube. During its entire flow it runs through the suburban section of Belgrade and despite being short it flows through the three Belgrade's municipalities, next to the half dozen of suburbs of Belgrade (giving its name to one of them) with a total population of 35,000 and is a route to important roads.