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
San Saba River San Saba River The San Saba River ("San Sabá") is a river in the U.S. state of Texas. It is an undeveloped and scenic waterway located on the northern boundary of the Edwards Plateau. The river begins in two primary branches. The North Valley Prong runs east through Schleicher County for 37 miles, while the Middle Valley Prong runs 35 miles through the same county. Both merge near Fort McKavett to form the San Saba River, which flows another 140 miles east/northeast until it drains into the Colorado River east of the city of San Saba. A major tributary is