Körös

The Körös or Criș is a river in eastern Hungary and western Romania. Its length is from the confluence of its two source rivers Fehér-Körös and Fekete-Körös to its outflow into the Tisza. Its drainage basin area is. It has three source rivers, all with their origin in the Apuseni Mountains in Transylvania, Romania: Crișul Alb, Crișul Negru and Crișul Repede. The confluence of the rivers Fehér-Körös and Fekete-Körös is near the town Gyula. The Körös downstream from Gyula is also called the Kettős-Körös. 37.3 km further downstream, near Gyomaendrőd, the Sebes-Körös joins the Körös/Criș. The section downstream from Gyomaendrőd is also called the Hármas-Körös. The Körös flows into the Tisza River near Csongrád in Csongrád county.
It was known in antiquity as the "Chrysus", Crisus, Crisia, Grisia, or Gerasus.