The total length of Poland's navigable waterways is 19,000 km of which some 4,800 km have tourist facilities. Sailing and canoeing are also possible on lakes: 9,300 of them have the surface area of more than 0.1 sq km each.
Such rivers as the Brda, Biebrza, Krutynia and Czarna Hancza are very attractive for kayakers and nature lovers.
Also very interesting are the waterways of the Pomeranian and Lubusz Lakelands as well as some mountain rivers; the latter ones are safe only for more experienced tourists.
The middle course of the main Polish river, the Vistula, contains many navigational hazards, and the river is thus a less-important waterway than the smaller Oder. The modern Gliwice Canal links the Oder to the Upper Silesian industrial region and carries coal to the port of Szczecin. The Oder basin is also linked to the lower Vistula by the Bydgoszcz Canal. Inland navigation is of little importance in Poland, however, with less than 1 percent of Polish freight being carried on rivers and canals.
The Masurian Lakes
The Masurian Lakes region of Poland comprises over 2,000 lakes, as well as huge forests and historic towns. The region is home to the largest lake in Poland, Sniardwy (or Spirdingsee in German), as well as little lakeside resort towns, such as Gizycko, Mikolajki, Elk, Wegorzewo, Ryn, Pisz and Ilawa.