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La Plata Drainage Basin
Transcript of La Plata Drainage Basin
5th Largest drainage basin in the world
Consists of the Parana, Paraguay and Uruguay basins, and the la plata sub basin.
Parana is almost 4000 km long (more than 4 times the length of Britain) Where is it? 25-35% of Paraguay's income is created by the Itaipu Dam
Itaipu dam's electricity production is evenly split between Paraguay & Brazil
Population of Paraguay = 6.5m
Paraguay only uses 3% of the electricity it produces
Sells energy Brazil
Brazil has need for energy due to Development Most of the Industrial Development in the La Plata basin is linked to the Itaipu Dam The Parana links large cities such as: Asuncion, Rosario & Santa Fe
Includes major international ports such as: Buenos Aires & Montevideo 600 km upstream Santa Fe can
still handle large ocean vessels Conservation needs to occur to save species:
Harpy Eagle Degradation of the river is occurring due to:
Removal of native vegetation for mass
live stock farming Biodiversity is being impacted by overexploitation, urban development & pollution The Itaipu dam has a had a negative effect on the environment due to:
Drowning 1350 km2; loss of 700km2 of forest
Led to extinction of several plant species.
27000 animals rescued from rising waters
105000 ha affected by Itaipu were protected forest reserves, bioligical reserves and refuges. Other environmental effects of Itaipu Include:
Lower water temperature changing aquatic behavior
Stops fish migrations upstream due to the dam
Increase in humidity and fog
Growth of weed, clogging navigation channels
Water related diseases e.g. Malaria and Schistosomiasis is on the increase River basin developed due to Transport needs for:
Export of Agricultural Goods - 73% Bolivian cost reduction
Transport of grain, "breadbasket" of South America
$100m investment at Rossario to widen the Parana
Development of the basin has attracted $475m in foreign investment Igaizu Falls
Attracts over 1 500 000 visitors a year The Parana discharges into the South Atlantic through an
elongated delta; Max flow = 17100 cumecs
Min Flow = 14300 cumecs