The Duratón River ( es, Río Duratón) is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of w ...

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

, a tributary of the

Douro The Douro (, , ; es, Duero ; la, Durius) is the highest-flow river of the Iberian Peninsula. It rises near Duruelo de la Sierra in Soria Province, central Spain, meanders south briefly then flows generally west through the north-west part o ...

. It originates in the municipality of

Somosierra Somosierra is a municipality in the Community of Madrid, Spain, located at 83 km north of Madrid, in the mountain pass with the same name, at an elevation of 1433 metres above sea level, being the northernmost town of Community of Madri ...

in the

Sierra de Guadarrama The Sierra de Guadarrama (Guadarrama Mountains) is a mountain range forming the main eastern section of the Sistema Central, the system of mountain ranges along the centre of the Iberian Peninsula. It is located between the systems Sierra de G ...

References

Rivers of Spain Rivers of Castile and León Tributaries of the Douro River {{Spain-river-stub