Satellite map of Topčiderka
The Topčiderska Reka (literally, Topčider river) or colloquially Topčiderka (Serbian Cyrillic: Топчидерска река or Топчидерка) is a river in north-central Serbia, a 30 km-long right tributary to the Sava river to which it flows in the urban section of Belgrade.
Latitude: 44° 47' 19.07" N
Longitude: 20° 25' 18.65" E