Río de la Plata

Río de la Plata
River Plate, La Plata River
NASA photo of the Río de la Plata looking from northwest to southeast. Buenos Aires is visible on the right side near the Paraná River delta. River sediments turn its water brown as far as Montevideo, visible on the left coast.
Map of the Río de la Plata basin, showing the Río de la Plata at the mouths of the Paraná and Uruguay rivers, near Buenos Aires
EtymologySpanish for "river of silver"
Location
CountriesArgentina and Uruguay
Cities
  • Buenos Aires
  • Montevideo
  • La Plata
  • Quilmes
  • Colonia del Sacramento
  • San Isidro
  • Punta Lara
  • Vicente López
  • Avellaneda
  • San Fernando
  • Berazategui
  • Hudson
  • Atalaya
  • San Clemente del Tuyú
  • Ciudad del Plata
  • Ciudad de la Costa
Physical characteristics
SourceConfluence of Paraná and Uruguay rivers
 • locationArgentina/Uruguay
 • coordinates34°0′5″S 58°23′37″W / 34.00139°S 58.39361°W / -34.00139; -58.39361[1]
MouthAtlantic Ocean
 • location
Argentine Sea, Argentina
 • coordinates
35°40′S 55°47′W / 35.667°S 55.783°W / -35.667; -55.783[2]
Length290 km (180 mi)[3] 4,876 km (3,030 mi) including the Paraná
Basin size3,170,000 km2 (1,220,000 sq mi)[4] 3,182,064 km2 (1,228,602 sq mi)[5]
Discharge 
 • locationRío de la Plata, Atlantic Ocean
 • average(Period 1971-2010)

27,225 m3/s (961,400 cu ft/s)[5] 22,000 m3/s (780,000 cu ft/s)[3]

884 km3/a (28,000 m3/s)[6]
 • minimum12,000 m3/s (420,000 cu ft/s)
 • maximum50,000 m3/s (1,800,000 cu ft/s)
Basin features
Tributaries 
 • leftUruguay River, San Juan River, Santa Lucía River
 • rightParaná River, Luján River, Salado River

The Río de la Plata (Spanish pronunciation: [ˈri.o ðe la ˈplata] ; lit.'River of Silver'), also called the River Plate or La Plata River in English, is the estuary formed by the confluence of the Uruguay River and the Paraná River at Punta Gorda. It empties into the Atlantic Ocean and forms a funnel-shaped indentation on the southeastern coastline of South America. Depending on the geographer, the Río de la Plata may be considered a river, an estuary, a gulf, or a marginal sea.[3][7] If considered a river, it is the widest in the world, with a maximum width of 220 kilometres (140 mi).

The river is about 290 kilometres (180 mi) long and widens from about 2 kilometres (1.2 mi) at its source to about 220 kilometres (140 mi) at its mouth.[8] It forms part of the border between Argentina and Uruguay. The name Río de la Plata is also used to refer to the populations along the estuary, especially the main port cities of Buenos Aires and Montevideo, where Rioplatense Spanish is spoken and tango culture developed. The coasts of the river are the most densely populated areas of Uruguay and Argentina.[3]

  1. ^ Río Paraná Guazú at GEOnet Names Server (main distributary of the Río Paraná)
  2. ^ Cite error: The named reference iho was invoked but never defined (see the help page).
  3. ^ a b c d "Río de la Plata". Encyclopædia Britannica. Archived from the original on 9 May 2015. Retrieved 11 August 2010.
  4. ^ Raúl A. Guerrero; et al. (June 1997). "Physical oceanography of the Río de la Plata Estuary, Argentina". Continental Shelf Research. 17 (7): 727–742. Bibcode:1997CSR....17..727G. doi:10.1016/S0278-4343(96)00061-1.
  5. ^ a b "Balance hídrico en la Cuenca del Plata".
  6. ^ "Transboundary River Basin Overview – La Plata" (PDF).
  7. ^ "Limits in the Sea No. 44 Straight Baselines: Argentina" (PDF). The Geographer, Bureau of Intelligence and Research, Department of State of United States of America. August 10, 1972.
  8. ^ Fossati, Monica; Piedra-Cueva, Ismael. "Salinity Simulations of the Rio de la Plata" (PDF). International Conference on Estuaries and Coasts. Archived from the original (PDF) on 6 March 2012. Retrieved 11 August 2010.