Nišava

The Nišava, also known as the Nishava, is a river in Bulgaria and Serbia that is a right tributary of the South Morava and has a length of 218 km.

Flowing generally west for the remaining 151 km, it passes near Dimitrovgrad, Pirot, Bela Palanka, Niška Banja, and Niš, one of Serbia's largest cities, 10 km before emptying into the Južna Morava. However, due to Niš's rapid growth in previous decades and its still-growing suburbs, the Nišava's banks are urbanized almost to its mouth.

The Nišava District (with Niš as the administrative center) was named after the river after it was divided into districts in 1992.

The river is part of the drainage basin of the Black Sea. Its own drainage area spans 4,086 km2, with roughly 73% of it in Serbia and the remainder in Bulgaria. Nišava is impassable. It is not only the Južna Morava's longest tributary, but also its largest in terms of discharge (36 m3/s). It has many smaller tributaries, the most significant of which are the Temštica on the right and the Jerma (or Sukovska reka), Crvena reka, Koritnička reka, and Kutinska reka on the left.

Length: 218 km (135 mi)