Liwiec

The Liwiec (or Liw) is a river in Poland, in the plains of Southern Podlaskie Voivodeship and central Masovian Voivodeship. It is 126 kilometres long and drains 2779 square kilometres. Its source is located to the north-west of Międzyrzec Podlaski near Siedlce and crosses Wyszków, Liw, Węgrów and Stara Wieś. It finds its estuary into Bug near the towns of Wyszków and Kamieńczyk.