The river's Latin name was Duria maior, Duria Baltica or Duria Bautica.[3][4][5]Strabo called it Δουριας (Dourias) in Greek.[6] The name "Duria" is from the Celtic root *dubr- ("flow"), found in many European river names such as Douro / Duero; it derives from Proto-Indo-European *dʰew- ("flow").[7] The second part may derive from the Illyrian root *balta ("‘swamp, marsh, white clay").[8][9][10]
It is a popular place for whitewater rafting and kayaking. Early in the summer, in May and June, the rivers are usually high with snow melt from the mountains. During July, August and September the water levels are usually lower and the temperature warmer.