The Vachagan is a tributary of the Voghji running through a portion of southern Syunik Province, Armenia. It has a total length of 11.6 kilometres (7.2 mi) and a catchment area of 35.7 square kilometres (13.8 sq mi).
Gabrielyan, B. K.; Hakobyan, S. H.; Mikaelyan, H. L. (2010). "Hydrobiological Characteristics of Vogchi River and its Main Tributaries (Armenia)". Electronic Journal of Natural Science. 2 (15). ISSN1728-791X.
