Lagoon Mirim

Lagoon Mirim (Portuguese, pronounced [miˈɾĩ]) or Merín (Spanish, pronounced [meˈɾin]) is a large estuarine lagoon which extends from southern Rio Grande do Sul state in Brazil into eastern Uruguay. Lagoa Mirim is separated from the Atlantic Ocean by a sandy, partially barren isthmus.

Lagoon Mirim
Lagoon Mirim
LocationBrazil and Uruguay
Coordinates32°45′S 52°50′W
Typeestuarine lagoon
Primary outflowsSão Gonçalo Channel
Catchment area47,756.3 km2 (18,438.8 sq mi)
Max. length174 kilometres (108 mi)
Max. width10 to 35 km (6 to 22 mi)
Surface area3,750 km2 (1,450 sq mi) to 3,899.7 km2 (1,505.7 sq mi)
Average depth6 m (20 ft)
Water volume23.4 km3 (5.6 cu mi)
Surface elevation0 m (0 ft)

The Jaguarão/Yaguarón, Tacuarí and Cebollatí Rivers empty into Lagoon Mirim, while the São Gonçalo Channel connects it with Lagoa dos Patos to the north.

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