Aarhus River (Danish: Århus Å) is a 40-kilometre (25 mi) long river or stream, in eastern Jutland, Denmark. The river flows through the large river valley of Aarhus Ådal. The valley itself, stretches from Silkeborg to the coastal city of Aarhus, but the Aarhus River only runs through the easternmost parts. The river drains a basin of 324 square kilometres (125 sq mi) in the eastern part of Søhøjlandet and discharges into the Bay of Aarhus which is an embayment of the Kattegat. It originates 54 metres (177 ft) above sea level in the swampy bogland of close to Stilling-Solbjerg Lake, southwest of the city of Aarhus (56°6' northern latitude, 10°9' eastern longitude) and exits into Aarhus Harbour at 56°9' northern latitude, 10°13' eastern longitude. The river defines the border between Skande