Швециядағы Дальэльвен өзені

River in Sweden

The Dal River (Dalälven) is a river in central Sweden that flows from the north of Dalarna and runs into the sea in northern Uppland; it is commonly considered to be the southern border of Norrland, however only the last part correlates with Limes Norrlandicus (the biological Norrland border). The northern part is split into two rivers: Österdalälven (East Dal) and Västerdalälven (West Dal). The two connect in Djurås. It is over long — the second longest river in Sweden, and has a hydropower potential of 1420 megawatts, of which 2/3 is utilized. The largest power plant is located at the Trängslet Dam. Dalälven has been significant historically as a raft transport route. Nedre Dalälven River Landscape, Sweden, covers with a mixture of wetlands, rivers, lakes, flood plains and productive forests. It includes Lake Hovran and Färnebofjärden Bay Ramsar site. The region boasts high biodiversity, as the river forms a clear border zone between the northern and southern flora and fauna of Northern Europe. Agriculture and forestry have evolved as a result of changes in the steel and iron industries. More than 100 ‘Leader+ projects’ designed for sustainable development testify to the high dynamism of the region. The biosphere reserve benefits from a highly participatory governance system as well as numerous partnerships with universities and research centres for environmental monitoring.

After the junction of the Österdalälven and Västerdalälven, the river heads east, passing Borlänge, Dalarna's largest city, then receiving the waters of the Lillälven, itself fed by the Faluån, a river which goes through Falun, Dalarna's second largest city. The river then continues to Avesta where it strongly changes character. It leaves a deep valley and enters into a flat country, uniquely marked by some eskers. The first rapids are those at Avesta, called Storfors and Lillfors (big chute and little chute), after which the river forms the lake Bäsingen, then the rapids Näs bruk, then the lake Bysjön. It forms the frontier between Västmanland County to the south and Dalarna County to the north. It then forms the rapids at Tyttbo, and right after, one of its largest fjärds, that of Färnebofjärden National Park, forming the frontier between Uppsala County to the south and Gävleborg County to the north. More than 200 islands are strewn over this fjärd. The river continues to the rapids at Gysinge and then another great fjärd, Hedesundafjärden Bramsöfjärden. The river passes through the rapids at Söderfors towards Untrafjärden, then by the rapids of Untra towards Marmafjärden, and then the rapids of Lanforsen. Finally, goes through its last rapids at Älvkarleby before rejoining the Baltic Sea.

The first settlers in the region of the Dalälven arrived after the retreat of the ice sheet, 10,000 years ago. At that time, the Lower Dalälven was below sea level and was in the zone corresponding to today's Dalarna, which was the first area settled. The first settlers in the region settled the banks of the river and its tributaries, as well as the shore. They were hunter gatherers. It was easy to nourish oneself, thanks to the river, and these places were also the easiest to defend. There were some fields surrounding the villages, but were not very fertile. Log driving in River Dalälven reached its peak in 1952, when about 30 million logs per year were driven. It ended in most of the river in 1970. However, in the river's lower reaches, the driving continued until 1971, with some final emptying of the stocks in 1972. In 1973 the whole river was closed for log driving, and in 1977 all logging installations along River Dalälven were decommissioned.