Lake Arpi is a lake and reservoir on the Ashotsk plateau in Shirak province, in Armenia's northwest, and it's the point where the Akhurian River begins. Sources put its elevation between 2,022 and 2,025 meters, and its surface area at about 20 square kilometers.
By volume it holds roughly 0.1 cubic kilometers of water, making it the second-largest of Armenia's lakes after Lake Sevan.
Lake Arpi lies in Shirak province, in Armenia's northwest, about 123 km northwest of Yerevan (straight-line).
