Unac (river)

Unac
Location
CountryBosnia and Herzegovina
Physical characteristics
Source 
  locationPreodac
Mouth 
  location
Una, Martin Brod
  coordinates
44°29′42″N 16°08′08″E / 44.49500°N 16.13556°E / 44.49500; 16.13556
Basin features
ProgressionUnaSavaDanubeBlack Sea

The Unac (Serbian Cyrillic: Унац) is a sinking river in Bosnia and Herzegovina. It rises beneath Šator mountain, flows through the municipality of Drvar and finally meets Una River in Martin Brod. Also runs through two deep and rugged karstic canyons and it is dammed to form small Preodačko Lake and larger Župica Lake, before it reach town of Drvar.

Lower course of the Unac River and its canyon is included into the Una National Park.

The confluence of Una and Unac is the location of the medieval Rmanj Fortress, as well as the Rmanj Monastery.