Topolnitsa (river)

Topolnitsa
The Topolnitsa as seen from Trakiya motorway
Location
CountryBulgaria
Physical characteristics
Source 
  locationeast of Bich, Sredna Gora
  coordinates42°37′8.04″N 24°17′35.16″E / 42.6189000°N 24.2931000°E / 42.6189000; 24.2931000
  elevation1,413 m (4,636 ft)
Mouth 
  location
Maritsa
  coordinates
42°11′13.92″N 24°18′1.08″E / 42.1872000°N 24.3003000°E / 42.1872000; 24.3003000
  elevation
205 m (673 ft)
Length155 km (96 mi)
Basin size1,789 km2 (691 sq mi)
Basin features
ProgressionMaritsaAegean Sea

The Topolnitsa (Bulgarian: Тополница [toˈpɔɫnit͡ʃɐ]) is a river in southern Bulgaria, an important left tributary of the Maritsa. The river's name is derived from the Bulgarian word топола, topola ("poplar"). Reaching length of 155 km, the Topolnitsa is the fourth longest river in the Maritsa drainage, following the Tundzha (390 km), the Arda (290 km) and the Ergene (281 km).