The Solokiia (Ukrainian: Солокія, Polish: Sołokija) is a river in Poland and Ukraine and a tributary of the Bug. Its source is located north of Tomaszów Lubelski. In its upper reaches, the Solokiia runs mainly in a southeastern direction. Near the crossing of the Polish-Ukrainian border it turns to the east and after passing through Uhniv and Belz it flows in Chervonohrad as a left affluent into the Western Bug.
^British and Foreign State Papers 1953 -- Page 1171 "... according to the map in .the scale 1 : 500,000 annexed hereto(2) conceding additionally to Poland : (a) Territory situated to the east of the " Curzon Line " up to the river Western Bug and the river Solokiia, the south of the town of Krylov, with ."