Hrazdan river originates from Lake Sevan and flowing through Geharkunik and Kotayk regions and the territory of Yerevan. It flows into the river Araz. The length of the river is 141 km, the basin area is 7310 km2.

Equally important tourist value of the Hrazdan River. In the surrounding areas of its flow in Kotayk region formed resort areas with modern hotel complexes and a great Hrazdan Gorge in the central part of Yerevan has become one of the popular places of recreation for residents and visitors alike.