It starts as a confluence of the Instruch and the Angrapa and drains into the Baltic Sea through the Vistula Lagoon. Its length under the name of Pregolya is 123 km, 292 km including the Angrapa. The basin has an area of 15,500 km². The average flow is 90 m³/s.
Euler's Seven Bridges of Königsberg problem was based on the river's bridges in Königsberg, now Kaliningrad.
Source: Wikipedia.org
Copyright: Creative Commons 3.0
Discover the most beautiful and popular trails in the area, carefully bundled into appropriate selections.
Source: Nikater
Copyright: Creative Commons 3.0
Discover the most beautiful and popular attractions in the area, carefully bundled in appropriate selections.
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