The Lima River (Portuguese name; known as Limia in Spanish and Galician) runs west from the autonomous community of Galicia in Spain to Portugal, where it enters the Atlantic Ocean at Viana do Castelo, covering 108 kilometres (67 mi).

[1] Brutus Callaicus became the first Roman to cross the river, carrying his standard with him to convince his frightened soldiers to follow.

[2][3][4] The source of the Lima is Talariño Mountain at 975 metres (3,199 ft) above sea level, close to the village of Paradiña in the Sarreaus municipality (Ourense, Spain).

In Spain, it extends for 41 kilometres (25 mi) and is known by regional names such as Alariño, Freixo and Mourenzo; however, the official term in Galicia is Limia.

[5] The dam includes a hydro-electric plant,[6] and creates a large reservoir on the Spanish side of the border.