| Opir | |||||||||||
| Length: | 58km (36miles)[1] | ||||||||||
| Basin Size: | 843km2 | ||||||||||
| Source1 Location: | near [2] | ||||||||||
| Source1 Coordinates: | 48.7971°N 23.2873°W | ||||||||||
| Source1 Elevation: | 975m (3,199feet) | ||||||||||
| Mouth: | Stryi | ||||||||||
| Mouth Location: | near Verkhnie Synovydne[3] | ||||||||||
| Mouth Coordinates: | 49.1125°N 23.5947°W | ||||||||||
| Mouth Elevation: | 370m (1,210feet) | ||||||||||
| Subdivision Type1: | Country | ||||||||||
| Subdivision Name1: | Ukraine | ||||||||||
| Subdivision Type2: | Oblast | ||||||||||
| Subdivision Name2: | Lviv Oblast | ||||||||||
| Progression: | Stryi→ | ||||||||||
| Extra: |
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The Opir River (Ukrainian: О́пір) is located in Ukraine, within Stryi Raion of Lviv Oblast. It is a right tributary of the river Stryi (Dniester basin).
The Opir River originates on the eastern slope of Velykyi Yavirnyk Mountain (Ukrainian: Великий Явірник) 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 843km2. Its average stream gradient is 10.4m/km. The river flows in a V-shaped valley, with a width varying between 150m (490feet) and 300m (1,000feet) 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.[4]
Eight small rivers and 31 streams with a total length of and an area of flow into the river.
Several settlements are located on the river (in order from the source to the mouth):, Lavochne, Ternavka, Slavske, Tukhlia, Hrebeniv, Skole, Dubyna, Verkhnie Synovydne.