Wiar
Wiar or Vihor is a left tributary of the San River in southeastern Poland and Ukraine. It flows for 70.4 kilometres, and joins the San near Przemyśl.
Tributaries
;Left;Right
- Bibiska
- Mala Vyrva
- Bukhta
- Vyrva
- * Arlamivka
- * Chyzhka
Wiar or Vihor is a left tributary of the San River in southeastern Poland and Ukraine. It flows for 70.4 kilometres, and joins the San near Przemyśl.
;Right