Opir River

The Opir River is located in Ukraine, within Stryi Raion of Lviv Oblast. It is a right tributary of the river Stryi.

Geography

The Opir River originates on the eastern slope of Velykyi Yavirnyk Mountain in the, south of the village of. It runs between the mountains of the Skole Beskids, mainly to the northeast and north. It flows into the Stryi River between the town of Verkhnie Synovydne and the village of Mezhybrody.
The Opir is long, with a basin size of. Its average stream gradient is. The river flows in a V-shaped valley, with a width varying between and in the lower reaches. The floodplain is bilateral, sometimes unilateral, with a width ranging from to. The shores are steep and occasionally swampy. The stream bed is rocky, with a width of to, and a depth of to. The bottom is usually lined with pebbles of Carpathian sandstones. The river supplies water for settlements and for the irrigation of agricultural lands.
Recently, the river has become popular among tourists who go rafting.

Eight small rivers and 31 streams with a total length of and an area of flow into the river.