After it flows between the villages of Pinosava and Rušanj (western slopes of the Avala mountain), the Topčiderka enters the urban section of Belgrade (Rakovica municipality) at the neighborhood of Resnik.

At this point, the river enters the territory of the municipality of Savski Venac where the vast woods of Topčider are formed.

After the Topčiderka passes next to the Konak of Prince Miloš and the Belgrade hippodrome, it empties into the Čukarica Bay of the Sava river, across the northern tip of the Ada Ciganlija island, at an altitude of 69 meters.

It drains an area of 147 km² (out of which 70% is agricultural land) with 35 tributaries and belongs to the Black Sea drainage basin.

[2] State government decided in 1821 to organize food trade and to check the quantity and quality of the goods imported to the city.

[6] Despite its river bed has been arranged and concreted in majority of its urban course, the Topčiderka still floods the surrounding areas of Belgrade during heavy rains.

Concrete bed for the further 7 kilometers are projected, so as the seven small reservoirs (added to the already existing two) which will prevent floodings and make irrigation possible.

[7] When Ada Ciganlija was connected to the mainland via the embankments in 1967, arm of the Sava river which separated the island was transformed into the Čukarica Bay in its northern part.

The plan to build a treatment plant on the bank near the Belgrade Fair which would detoxicate the sludge and produce fertilizer from it was scrapped due to the high costs.

An experiment was held when the water from the river and bay was pumped into the special pools in the nursery gardens of the "Srbijašume", state company for the forest management.

[11][12] After the Ada Bridge across the Sava was finished in 2012, a major Radnička interchange was built above the river's mouth into the Čukarica Bay.

The planned construction of the road connection of the bridge with Rakovica includes the relocation of the Topčiderka riverbed for 1 km (0.62 mi), construction of a new bridge across the Pere Velimirovića Steeet in Rakovica's neighborhood of Kanarevo Brdo and reconstruction and widening of the Bulevar patrijarha Pavla which is designated to be the most important traffic route in this part of Belgrade.

A work of Marija Krsmanović Stringeta, Anđelka Badnjar and Milena Kordić, the projected new complex will include the hotel and the sports center on the bank of the river, instead of the present "Jugopetrol" oil depots.

[22] In July 2021, city announced that project for flash flood warnings is being applied on several rivers and streams on the territory of Belgrade, with the Topčiderka being the first on the list.