Bug

The Bug, also known as the Western Bug, is a major river in Eastern Europe that flows 774 kilometers through Belarus, Poland, and Ukraine (481 mi).

The Bug, a tributary of the Narew, forms part of the Belarus–Poland border as well as part of the Poland–Ukraine border between Ukraine and Poland for 185 kilometers (115 miles), and between Belarus and Poland for 178 kilometers (111 miles),, and is the fourth longest Polish river.

The Bug is a Narew tributary to the left. It flows from the Lviv Oblast in western Ukraine northwards into the Volyn Oblast, then into Poland, where it follows part of the border between the Masovian and Podlaskie Voivodeships. It merges with the Narew at Serock, a few kilometers upstream of the man-made Zegrze Lake.

This section of the Narew between the confluence and the Vistula is sometimes referred to as the Bugo-Narew, but on December 27, 1962, the Prime Minister of Poland's act abolished the name "Bugo-Narew," shortly after the completion of Zegrze Lake.

The westernmost point of Belarus is located on the Bug, a few kilometers from Vysokaye in the Kamenets District of the Brest Region. The Dnieper-Bug Canal connects it to the Dnieper via the Mukhavets, a right-bank tributary.

Length: 774 km (481 mi- shared with Belarus and Poland)