Pantanal is defined as a vast plain, surrounded by the Bodoquena Mountain Ridge to the South, the Brazilian Plateau to the east, the Mato-grossenses Plateau to the north and by the Serra do Amolar and Maçico do Urucum to the west. The low altitude relief, predominantly flat, makes Pantanal an immense basin inside the continent where the waters of the rivers that spring form its banks, cross through and flood the area.
Fed by many rivers and ponds, the Paraguay River is the main path of waters in Pantanal. It crosses the biome from north to south, connecting Pantanal to the Paraná River Basin - Prata River. As it flows south, with increasing difficulty, huge quantities of water are forced throughout the Southern part of Pantanal.
The slim declivity of the Paraguay River - approximately 20-30 centimeters per kilometer run - exerts great influence in the plain's flood basin. The slow water flowing off through the river favors the inundation of the region - constant during the summer - for, with the torrential rains of the season, the water spreads more easily taking over the Pantanal scenery. Meanwhile, large quantities of water, hundreds of cubic kilometers per year, are lost through direct evaporation to the atmosphere. Pantanal may be justly considered the largest "window" of fresh water evaporation of the world.
|Wet Season - February to April
||Dry Season - August to October
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