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Ånnsjön is a lake in Åre Municipality in Jämtland County, Sweden. By road it is located northwest of Östersund. The lake and surrounding wetlands are rich in fish, water birds and other wildlife. There are remains of human habitation in the region since the stone age, including petroglyphs that are among the oldest in Sweden. In the late 19th century there were attempts to drain the wetlands for use in agriculture and forestry, but this is now being reversed. The lake and surroundings is a protected Natura 2000 area, and attracts many birdwatchers. ==Geography== Ånnsjön is easily accessed via European route E14 through the mountain area of Jämtland, and is therefore one of Sweden's best known mountain lakes. It is about in area and is above sea level. Ånnsjön is generally very shallow, around , with its greatest depth at in the southern part. It is one of several lakes in a basin-like valley surrounded by mountains except to the northeast. The lake is roughly circular, with a diameter of about . There is a sandy ridge along of the shore. The shores include long sandy beaches, pebble beaches, areas of lush vegetation and areas where the lake merges into peat bogs. Ånnsjön is surrounded in part by about of marshy areas. Ditches dug to drain some of these bogs are now being filled to restore the water levels. Ånnsjön is fed by the mountain rivers Enan and Handölan. In its lower reaches the Handolan has rapids, waterfalls and gorges. The Enan and Handölan converge just before entering the west of the lake, where the Handöl delta has formed. Other deltas enter the north-west and south-east of the lake. Tributaries draining the mountain area to the south and east of the lake include the Västerån, Bunnerån, Järpån, Rekån and Kärrån. The lake is drained by Landverksströmmen, which exits its northern end. This is the western branch of the Indalsälven river. Ånnsjön is part of the sub-basin called the "outlet of Ånnsjön", which has an average altitude of above sea level and an area of When all the upstream drainage basins upstream are counted, the accumulated basin area is . The catchment area consists mostly of forest (41%), and marshes (14%). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ånnsjön」の詳細全文を読む スポンサード リンク
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