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Mirim Lagoon
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Map of southeastern South America highlighting southern Brazil and neighboring countries. Mirim Lagoon is labeled near the southern border of Brazil, close to Uruguay. An inset map shows the location of this region within Brazil, shaded in pink. Major cities, rivers, and geographic features are labeled throughout the main map.
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water glass on white background. (drink; clear; clean water; liquid)
Water and its Varying Forms
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Portuguese:
Lagoa Mirim
Spanish:
Laguna Merín
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Mirim Lagoon
Mirim Lagoon

Mirim Lagoon

lagoon, South America
Also known as: Lagoa Mirim, Laguna Merín
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Britannica Editors
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History

Mirim Lagoon, shallow Atlantic tidewater lagoon on the border between Brazil (Rio Grande do Sul state) and Uruguay. It is approximately 118 miles (190 km) long and 30 miles across at its widest point, covering an area of 1,542 square miles (3,994 square km). A low marshy bar, 10 to 35 miles wide and containing smaller lagoons, separates the Mirim Lagoon from the ocean. It drains northeastward into the Patos Lagoon through the São Gonçalo Canal and is navigable by shallow-draft vessels.

This article was most recently revised and updated by Jeff Wallenfeldt.
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