page_title: Geography of Uruguay
section_title: Topography and hydrography
hierarchical_section_title: Geography of Uruguay / Topography and hydrography
context_page_description: Uruguay is a country in the southeastern region of South America, bordering the Atlantic Ocean, between Argentina, Brazil and Paraguay. It is located in the Southern Hemisphere on the Atlantic seaboard of South America between 53 and 58 west longitude and 30 and 35 south latitude. It is bordered to the west by Argentina, on the north and northeast by Brazil, and on the southeast by the Atlantic Ocean, which makes up Uruguay's coast.
  To the south, it fronts the Río de la Plata, a broad estuary that opens out into the South Atlantic. Montevideo, the capital and major port, sits on the banks of the Río de la Plata and is on approximately the same latitude as Cape Town and Sydney. Uruguay is the smallest Spanish-speaking nation in South America with a land area of 171,520 km² and a water area of 2,600 km². Additionally, Uruguay is the world's only sovereign nation that does not extend north of the 30 degrees south latitude; accordingly, all other nations include at least some land further north than all points in Uruguay; making Uruguay the world most southernmost sovereign nation. It has an Exclusive Economic Zone of 142,166 km².
context_section_description: Most of Uruguay is a rolling plain that represents a transition from the almost featureless Argentine pampas to the hilly uplands of southern Brazil. The country itself has flat plains on its eastern, southern, and western edges. The narrow Atlantic coastal plain is sandy and marshy, occasionally broken by shallow lagoons. The littorals of the Río de la Plata and the Río Uruguay are somewhat broader and merge more gradually into the hilly interior.
  The remaining two-quarters of the country is a rolling plateau marked by ranges of low hills that become more prominent in the north as they merge into the highlands of southern Brazil. Even these hilly areas are remarkably featureless, however, and elevations seldom exceed 200 meters. The highest point, the Cerro Catedral (513 m), is located in the southeast of the country in the Cuchilla Grande mountain range.
  Uruguay is a water-rich land. Prominent bodies of water mark its limits on the east, south, and west, and even most of the boundary with Brazil follows small rivers. Lakes and lagoons are numerous, and a high water table makes digging wells easy.
  Three systems of rivers drain the land: rivers flow westward to the Río Uruguay, eastward to the Atlantic or tidal lagoons bordering the ocean, and south to the Río de la Plata. The Río Uruguay, which forms the border with Argentina, is flanked by low banks, and disastrous floods sometimes inundate large areas. The longest and most important of the rivers draining westward is the Río Negro, which crosses the entire country from northeast to west before emptying into the Río Uruguay. A dam on the Río Negro at Paso de los Toros has created a reservoir—the Embalse del Río Negro—that is the largest artificial lake in South America. The Río Negro's principal tributary and the country's second most important river is the Yí River (Río Yí).
  The rivers flowing east to the Atlantic are generally shallower and have more variable flow than the other rivers. Many empty into lagoons in the coastal plain. The largest coastal lagoon, Laguna Merín, forms part of the border with Brazil. Six smaller lagoons, some freshwater and some brackish, line the coast farther south.
caption: Shaded relief map of Uruguay
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