Čierna voda

Čierna voda
Physical characteristics
Source 
  locationLittle Carpathians
Mouth 
  location
Little Danube
  coordinates
47°57′33″N 17°52′40″E / 47.9593°N 17.8779°E / 47.9593; 17.8779
Length105.5 km (65.6 mi)
Basin features
ProgressionLittle DanubeVáhDanubeBlack Sea
Tributaries 
  leftDudváh

The Čierna voda is a lowland river in western Slovakia. It is 105.5 km long. Its source is in the Little Carpathians, near the town Svätý Jur. Near the town Čierna Voda, it is joined by its largest tributary: the Dudváh. It discharges into the Little Danube river near the village Dolný Chotár.