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| | Armenia Diaspora Conference Official Site (Site not responding. Last check: 2007-10-11) |
 | | About thirty rivers and streams flow into the lake and only one river, Hrazdan, flows out through a gorge, falling down by 1,000 meters from the level of the lake. |
 | | The level of the lake drastically dropped in the 50-s (by about 19 meters) of the last century following construction of a chain of hydro power plants on the Hrazdan River and pumping out water for irrigation purposes. |
 | | The drop in the lake's water level necessitated building the Arpa-Sevan 48 Km tunnel, which, after many years of construction through the mountains, began supplying water to the lake, in 1981, from part of the Arpa River. |
| www.armeniadiaspora.com /js/030530sevan.html (247 words) |
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