Bartın River, near the Black Sea
Bartın River (Bartın Çayı, ancient Parthenius, Parthenios), is a small river in the east of the Black Sea Region of Turkey. Its source is in the Ilgaz Mountains, in Kastamonu Province and Karabük Province. The river flows to the north, passes through Bartın, and empties into the Black Sea near Boğaz village in a delta.
The last 14 kilometres (9 mi) on the Bartın River, between Bartın and the Black Sea coast, is navigable for vessels.
Coordinates: 41°41′N 32°15′E / 41.683°N 32.250°E