Porsuk River
The Porsuk or Kocasu-Porsuk River, the ancient Tembris, is a river in Turkey, that flows for. The city of Eskişehir is located on the banks of this river. The river is dammed by the Porsuk dam, forming large reservoirs. The Porsuk flows into the Sakarya River near the town of Polatlı, ancient Gordium.