kajaran belongs to the south water basin management area. river voghji (the length is 82 km, the catchment area is 1175sq.km) flows through the city; it starts from the confluence of kajarants and kaputjugh rivers, 6 km away from the kajaran. voghji is a typical mountain river with rugged stream bed and developed hydrographic network. it feeds both from thawing snow runoffs and groundwaters, with prevalence of one of its tributaries, tzaghkari. it then flows into arax river, at an altitude of 350m above sea level.