The largest in the river network is the River Czarna Hańcza. Peat bogs and small and marshy forest lakes are another characteristic feature of this park.
Pine and spruce forests dominate, but there are also colonies of moor, aquatic and meadow plants.
A major attraction of this park is its wolf and beaver populations. The other mammals living in the forest include elk, red deer and roe deer. There is also a profusion of aquatic birds, and the park waterways teem with rare fish species such as powan, the European white-fish, and bulltrout.
The park is under the protection of the RAMSAR International Convention.