Wody
The protection zone of the Biebrza National Park surrounds the highly bio-diversified and most unique Biebrza River. Its headwaters are located in the small moraine hills of Sokolskie, just south of the small and quaint village of Nowy Dwór. The length of the Biebrza River is 164 km, draining its waters into the larger Narew River at the village of Ru¶. Only 10 km is excluded from the boundaries of the Biebrza National Park; with a catchment area of over 7000 square kilometers the Biebrza Valley is considered one of the largest catchment areas in Poland surpassing many man made reservoirs. The Biebrza and the Nieman catchments are connect by the Augustowski Channel a hydro-technical achievement of the 19 th century. This and many other drainage works contributed to the lowering of the local ground water table. The Biebrza Marshes are supplied by two ways its water table and the tributaries that discharges into the Biebrza.
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