The Dragovištica or Dragovishtitsa (Serbian Cyrillic: Драговиштица; Bulgarian: Драговищица) is a river in southeastern Serbia and western Bulgaria, a 63 km-long right tributary to the Struma river. The river belongs to the Aegean Sea drainage basin and is not navigable. The Dragovištica is formed by the confluence of the Božička reka (its longer headstream) and the Ljubatska reka at the small town of Bosilegrad in the southeastern part of Serbia, at an altitude of 787 m. The Božička reka (Cyrillic: Божичка река) originates in the region of Krajište, between Lake Vlasina to the west and the Bulgarian border to the east, just a few kilometers from the source of another Serbian-Bulgarian river, the Jerma. However, while Jerma flows...