Mirna (Adriatic Sea)

Mirna
The Mirna River in Istria, Croatia
Location
CountryCroatia
Physical characteristics
Mouth 
  location
Adriatic Sea
  coordinates
45°18′59″N 13°35′41″E / 45.3164°N 13.5948°E / 45.3164; 13.5948
Length53 km (33 mi)
Basin size458 km2 (177 sq mi)

The Mirna (Italian: Quieto) is a river in Istria, Croatia. In ancient times it was called the Aquilis. It is Istria's longest and richest river, being 53 km (33 mi) long and having a basin covering an area of 458 km2 (177 sq mi). It rises near Buzet, passes along Motovun and empties into the Adriatic Sea at Antenal, near Novigrad.