country mendeira
The Tagus ( Ancient Greek :  " Tagos ") is the longest river on the Iberian Peninsula . It is long , in ___MASK93___ , along the border between ___MASK62___ and ___MASK93___ and in ___MASK62___ , where it empties into the Atlantic Ocean near Lisbon . It drains an area of ( the second largest in the Iberian peninsula after the Douro ). The Tagus is highly utilized for most of its course . Several dams and diversions supply drinking water to most of central ___MASK93___ , including Madrid , and ___MASK62___ , while dozens of hydroelectric stations create power . Between dams it follows a very constricted course , but after Almourol it enters a vast alluvial valley prone to flooding . At its mouth is a large estuary on which the port city of Lisbon is situated . Covilhã is a city and a municipality in the Centro region , ___MASK62___ . The city proper had 34 , 772 inhabitants in 2001 . The municipality population in 2011 was 51 , 797 , in an area of 555 . 60 km² . It is located in the Cova da Beira subregion and the district of Castelo Branco . The municipal holiday is October 20 . Constância is a municipality in Santarém District in ___MASK62___ . The population in 2011 was 4 , 056 , in an area of 80 . 37 km² . The Zêzere is a river in ___MASK62___ , tributary to the Tagus . It rises in the Serra da Estrela , near the " Torre ", the highest point of continental ___MASK62___ . The Zêzere runs through the town Manteigas , runs through Belmonte , passes south of the city Covilhã and east of the town of Pedrogão Grande . It flows into the Tagus in Constância . It is the second longest river in ___MASK62___ ( the Mondego is the longest ). Its slope allows for the hydroelectric powerplants of Cabril , Bouçã and Castelo de Bode . 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 water . Small rivers can be referred to using names such as stream , creek , brook , rivulet , and rill . There are no official definitions for the generic term river as applied to geographic features , although in some countries or communities a stream is defined by its size . Many names for small rivers are specific to geographic location ; examples are " run " in some parts of the ___MASK26___ , " burn " in Scotland and northeast ___MASK63___ , and " beck " in northern ___MASK63___ . Sometimes a river is defined as being larger than a creek , but not always : the language is vague . Serra da Estrela (" Star Mountain Range ") is the highest mountain range in Continental ___MASK62___ . Together with the Serra da Lousã it is the westernmost constituent range of the Sistema Central and also one of the highest in the system . It includes mainland ___MASK62___ ' s highest point at above mean sea level ( although the summit of Mount Pico in the Portuguese Azores islands is higher ). This point is not a distinctive mountain summit , but rather the highest point in a plateau , being known as Torre (" Tower " in English ). Torre is an unusual summit in that it is accessible by a paved road . The peak has a topographic prominence of and its parent peak is Pico Almanzor , in Spain . Mendeira is a village in the Portuguese parish of Cernache de Bonjardim , having less than twenty inhabitants . The village is near Mount Mendeira and the Zêzere River . Manteigas is a town and a municipality in ___MASK62___ . The population in 2011 was 3 , 430 , in an area of 121 . 98 km² . ___MASK62___ ( Portuguese : ), officially the Portuguese Republic ( Portuguese : ), is a country on the Iberian Peninsula in Southwestern Europe . It is the westernmost country of mainland Europe . To the west and south it is bordered by the Atlantic Ocean and to the east and north by Spain . The ___MASK62___  Spain border is long and considered the longest uninterrupted border within the European Union . The republic also includes the Atlantic archipelagos of the Azores and Madeira , both autonomous regions with their own regional governments .