Voltoya River Voltoya River The Voltoya is a river in Spain. It is a tributary river of Eresma River which is, in turn a tributary of the Adaja River that emerges from Douro River. Its starts in the mountains of Guadarrama and Malagón. The water from Dehesa de la Cepeda , enclave of the city of Madrid and the Azálvaro Field also flow into the Voltoya . It runs through the Castilian-Leonese provinces of Ávila and Segovia . Its mouth is in Coca (Segovia). The Serones Reservoir, which supplies drinking water to the city of Ávila is located on the Voltoya. Tributaries
Aarhus (river) Aarhus (river) The Aarhus () is a long river or stream, in eastern Jutland, Denmark. The Aarhus flows through the large river valley of Aarhus Ådal. The valley itself stretches from Silkeborg to the coastal city of Aarhus, but the river only runs through the easternmost parts. The river drains a basin of in the eastern part of Søhøjlandet and discharges into the Bay of Aarhus which is an embayment of the Kattegat. It originates above sea level in the swampy bogland of Astrup Mose close to Stilling-Solbjerg Lake, southwest of the city of Aarhus (56°6' northern latitude, 10°9' eastern