Laborets River [Laborec].(Map: Laborets River). A right-bank tributary of the Liatorytsia River in eastern Slovakia. It is 135.5 km in length and drains a basin area of 4,523 sq km. Its source is near the Lupkiv Pass in the Lemko region, and it flows through the Low Beskyd and the Tysa Lowland. Its main tributaries (both left-bank) are the Chirokha River and the Uzh River.