The Swampland Hidrography Hidrografy is the science that researches and maps all the water surface of the Earth, showing the depth of the waters, the speed and the direction of the currents. The Swampland hidrography mesh is formed by the Paraguay River and their largest tributaries are: São Lourenço (670 Km), Cuiabá (650 Km), Miranda (490 Km), Taquari (480 Km), Coxim (280 Km) and Aquidauana (565 Km), as well as the smaller rivers: Nabileque, Apa and Black. The basin of the Paraguay river is formed by 175 rivers that cover 1400 kilometers of extension inside of the Brazilian territory. Due to this territorial vastness and a favorable pluviometric condition our country has the richest and most extensive hidrograpy net of the planet. The Swampland is an immense flooded plain in constant movement, varying with the flood times and drought, and four is the factors that influence this formation: the geography, the soil, the great number of rivers and the formations that involves it. That area is plane, with altitudes that don't cross the 200 meter above the sea level and with an almost null steepness favoring the floods along the Paraguay river, the only Swampland canal. Surrounded by the Brazilian Plateau to east and for the Andes Cordillera to west, these areas end up disemboguing at that time of the flood or of their thaw waters in the Swampland, this does with the soil is rich in clay impeding the absorption of the water. That hidrography complex possesses bays, interlinked lakes or not, denominatedfor corixos, ebb tides and small temporary or permanent rivers. In the inundations the rivers and stalls are interconnected, and in the ebb tide they are enriched by the humus, the area becomes the largest and richer concentration of natural foods that sustain the fauna and the flora. The Paraguay river is the main source of water provisioning for the cities of Corumbá and Ladário, besides being of fundamental importance for the rural activities. The deficiency of superficial water in that area, did with that most of the rural producers perforated artesian wells. Most of these artesian wells of the area it was perforated in calcareous rock, giving the "salty characteristic water', waters with great concentration of carbonate of calcium and magnesium. Studies indicated that in spite of that "salty" characteristic, the salty water small risk of use and solidification of the soil that water can be used to irrigate in the agriculture.

>> Hidrovia Paraguai-Paraná