Hrazdan is a major river and the second largest in Armenia. It originates at the northwest extremity of Lake Sevan and flows south through the Kotayk Province and Armenia's capital, Yerevan; the lake in turn is fed by several streams. In the Ararat plain it joins the Aras River along the border with Turkey. A series of hydro-electric plants have been constructed on the river. Its waters are in demand to irrigate crops. It also meets drinking water requirements and provides for recreation.