- This river should not be confused with the Pissa river in Russia, nor with the smaller Pisa river.
(Pissek) is a small river
with a length of 80.4 km in the Masurian Lake District
of the Warmian-Masurian Voivodeship
. The Pisa flows from Lake Roś
and is a tributary
of the Narew
, connecting the lakeland region with the Vistula
. The Piska Forest
borders the river on its west bank.
The river's name, like Pisz, comes from the Old Prussian word pisa, or swamp. Because the Prussian Galindae tribe once lived in the area, the Teutonic Knights referred to the Pisa as the Galinde.