Trgoviški Timok
 The Trgoviški Timok (Cyrillic: Трговишки Тимок; Timok of Trgovište) is a river in Serbia also known as Korenatac (Cyrillic: Коренатац) or Strma reka (Cyrillic: Стрма река; steep river). It starts on the western slopes of the Balkan Mountains (Stara Planina mountains) right under the highest peak of the mountain in Serbia Midžor less than a kilometer from the Bulgarian border.