Timok

The Timok, also known as the Great Timok, is a river in eastern Serbia. It forms a border between eastern Serbia and western Bulgaria for the last 15 kilometers of its route.

It is a branching system of many smaller rivers, many of which share the same name (Timok) but are differentiated by adjectives. The Timok is 202 kilometers long from its farthest source in the system, the Svrljiški Timok, to its confluence (as Veliki Timok). The river basin covers an area of 4,626 km2 (1,786 sq mi). It has an average discharge of 31 m3/s (1,100 cu ft/s) at the mouth. The Timok Valley has the largest Romanian-speaking population in Eastern Serbia.

After its formation at Zaječar, the Timok flows north-west, passing through the villages of Vražogrnac, Trnavac, Čokonjar, and Brusnik. It leaves the Timok Valley and enters the Negotin Valley after passing between the last two.

On the Serbian side of the Timok's lower course, there are no major settlements (though flowing only 7 km from Negotin). The Timok becomes a border river about 15 kilometers before it empties into the Danube as its right tributary, passing next to the Bulgarian towns of Bregovo and Baley. The river's mouth is the most northern point of Bulgaria and is only 28 meters above sea level, making it the lowest point in Serbia. The Timok's average discharge is 24 m3/s, but it can reach 40 m3/s, and it is part of the Black Sea drainage basin. Crna reka, Salaška reka, Sikolska reka, and Čubarska reka are the main (right) tributaries in this section.

Aside from the Timok Valley, the Timok gave its name to the Timočka Rebellion, a rebellion against Serbian King Milan Obrenović IV in 1883.

Length: 202 km (126 mi)