Minho (river)

The Minho ( MEEN-yoo; Portuguese: [ˈmiɲu]) or Miño ( MEEN-yoh; Spanish: [ˈmiɲo] ; Galician: [ˈmiɲʊ]; Proto-Celtic: *Miniu) is the longest river in the autonomous community of Galicia in Spain, with a length of 340 kilometres (210 mi). It forms a part of the international border between Spain and Portugal. By discharge volume, it is the fourth largest river of the Iberian Peninsula after the Douro, Ebro, and Tagus rivers. The Minho waters vineyards and farmland and is used to produce hydroelectric power. It also delineates a section of the Spanish–Portuguese border. In ancient English maps, it appears as Minno. The source of the Minho lies north of Lugo in Galicia, in a place called Pedregal de Irimia. After about 73 kilometres (45 mi), the river passes just south of the walls of this old Roman city, discharging in average 42 m3/s, and flows south through canyons until the valley widens north of Ourense. The river has been harnessed in reservoirs from Portomarín to Frieira. Along its length, it has the following reservoirs: Belesar with 654 cubic hectometres (530,000 acre⋅ft), Peares with182 cubic hectometres (148,000 acre⋅ft), Velle with17 cubic hectometres (14,000 acre⋅ft), Castrelo with,60 cubic hectometres (49,000 acre⋅ft) and Frieira with 44 cubic hectometres (36,000 acre⋅ft). About 20 kilometres (12 mi) north of Ourense at Os Peares, the Minho, with a discharge of 102 m3/s, receives the waters of its main tributary, the Sil, with 184 m3/s. Passing Ourense, there is one major dam at Frieira near the town of Ribadavia, which is famous for its Ribeiro DOP wine (called after the name of the region). There, the Minho averages 316 m3/s of discharge. Later on, the river flows in a southwest direction until reaching the Portuguese border near Melgaço. After 260 kilometres (160 mi) through Galicia, the Minho sets the...