The Tajuña is a river in central Spain, flowing through the provinces of Guadalajara and Madrid. It is a tributary of the river Jarama which in turn is a tributary of the Tagus. It rises in the Sierra

Jarama is a river in central Spain. It flows north to south and passes east of Madrid where the El Atazar Dam is built on a tributary, the Lozoya River. It flows into the river Tagus in Aranjuez. The