Yaruga (Jaruga in the original Polish), or Yarra to the Nilfgaardians, is the largest river in the Northern Kingdoms, beginning in the Blue Mountains and flowing westward all the way to the Great Sea. The kingdoms of Cintra and Verden are located at the mouth of the river.
|At present, the border between us and the South — dominated by Nilfgaard — is demarcated, as you can see, by the Yaruga River. It constitutes an obstacle which is practically insurmountable. It hardly ever freezes over, and during the rainy season it can carry so much water that its bed is almost a mile wide. For a long stretch it flows between precipitous, inaccessible banks, between the rocks of Mahakam...|
- Danusia Stok, in her translation of The Last Wish, kept the Polish name spelling of the river, calling it Jaruga, but then switched to "Yaruga" in Blood of Elves.