The Sor River or ''Sor Mañón'' flows between the provinces of

A Coruña A Coruña (; es, La Coruña ; historical English: Corunna or The Groyne) is a city and municipality of Galicia, Spain. A Coruña is the most populated city in Galicia and the second most populated municipality in the autonomous community and s ...

and Lugo, in the

autonomous community eu, autonomia erkidegoa ca, comunitat autònoma gl, comunidade autónoma oc, comunautat autonòma an, comunidat autonoma ast, comunidá autónoma , alt_name = , map = , category = Autonomous administra ...

of Galicia,

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 ...

. It is long. The river has an impressive

waterfall A waterfall is a point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in severa ...

called ''Augas Caídas'' in Mañon parish. The river Sor is the only river with

salmon Salmon () is the common name for several commercially important species of euryhaline ray-finned fish from the family Salmonidae, which are native to tributaries of the North Atlantic (genus ''Salmo'') and North Pacific (genus '' Oncorhy ...

in Galicia, since unlike others it has not yet been dammed to form a

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

for hydroelectric generation. The

estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environm ...

of the River Sor is the

Ria A ria (; gl, ría) is a coastal inlet formed by the partial submergence of an unglaciated river valley. It is a drowned river valley that remains open to the sea. Definitions Typically rias have a dendritic, treelike outline although they ca ...

do Barqueiro, long. The river environment, geomorphology, and nearby landscape are of considerable interest.

See also