
right|thumb|The Volkhov River drainage basin. The Shelon is shown on the map. The Shelon () is a river in the northwest part of European Russia, in Dedovichsky, Porkhovsky, and Dnovsky Districts of Pskov Oblast and Soletsky and Shimsky Districts of Novgorod Oblast. The Shelon is one of the principal tributaries of Lake Ilmen. It has a length of and drains a basin of . The towns of Porkhov and Soltsy, as well as urban-type settlements of Dedovichi and Shimsk, are located on the banks of the Shelon. The principal tributaries of the Shelon are the Sudoma (left), the Belka (right), the Polonka (ri
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right|thumb|The Volkhov River drainage basin. The Shelon is shown on the map. The Shelon () is a river in the northwest part of European Russia, in Dedovichsky, Porkhovsky, and Dnovsky Districts of Pskov Oblast and Soletsky and Shimsky Districts of Novgorod Oblast. The Shelon is one of the principal tributaries of Lake Ilmen. It has a length of and drains a basin of . The towns of Porkhov and Soltsy, as well as urban-type settlements of Dedovichi and Shimsk, are located on the banks of the Shelon. The principal tributaries of the Shelon are the Sudoma (left), the Belka (right), the Polonka (right), the Uza (left), the Udokha (left), the Sitnya (left), and the Mshaga (left).
The Shelon has its source in the swamps at the east of Pskov Oblast, close to the border with Novgorod Oblast. It flows northeast, then turns around and flows west. Around the urban-type settlement of Dedovichi the Shelon turns northwest. It further enters Porkhovsky District, and behind Porkhov turns north and then northeast. The Shelon crosses a short segment of Dnovsky District and returns to Porkhovsky District, crossing then to Novgorod Oblast. In Novgorod Oblast, the Shelon flows northeast and has its mouth by the urban-type settlement of Shimsk, forming an estuary.
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