| Abstract: | Lake Sevan, the largest lake in the Caucasus, with an area of about 540 square miles, underwent a rapid drop of its water level after its discharge was artificially expanded in conjunction with the construction of a series of hydroelectric stations on the Razdan River, its outlet. The drop of the lake level was associated with adverse environmental consequences and led to a decision to transfer water from the nearby Arpa River to the lake to help maintain its level. The diversion tunnel from the Arpa River is under construction. New findings on the various components of the income and outgo of water have made it possible to adjust the water balance of Lake Sevan and to predict the balance after the Arpa-Sevan diversion tunnel goes into operation. |
