Bug

The Bug is a large river in Eastern Europe that flows through Belarus, Poland, and Ukraine. It is 774 kilometers long (481 mi). The Bug, a tributary of the Narew, constitutes part of the Belarus–Poland boundary and part of Poland–Ukraine border, and is the fourth-longest Polish river. It runs between Ukraine and Poland for 185 kilometers (115 mi), and between Belarus and Poland for 178 kilometers (111 km).

The Bug is a Narew tributary to the left. It runs from the Lviv Oblast in western Ukraine northwards through the Volyn Oblast, then into Poland, where it traces part of the boundary between the Masovian and Podlaskie Voivodeships. It merges with the Narew in Serock, a few kilometers upstream of the man-made Zegrze Lake. This section of the Narew between the confluence and the Vistula is occasionally referred to as the Bugo-Narew, but on December 27, 1962, the Prime Minister of Poland's legislation removed the term "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.

Total Length: 480 miles