ALTO PARAGUAY HYDROGRAPHIC BASIN: RECHARGE AND CÁCERES PANTANAL AREA
Cáceres Pantanal; Water dynamics; Modeling.
The present study was developed in the Upper Paraguay Basin, focusing on the area of recharge and in the North
Pantanal in the state of Mato Grosso. The research aimed to identify geoenvironmental conditions and land use /
cover in the Alto Basin Paraguay and its influence on the dynamics of waters in the Pantanal de Cáceres. In the
execution of the study some procedures were necessary: bibliographic survey for the construction of the theoretical
framework. Performed the geoenvironmental characterization through technical reports CPRM, RADAMBRASIL and
Embrapa to understand the dynamics of infiltration and runoff. Land use data were extracted from IBGE
(Geosciences), the pluviometric and fluviometric information were measured from ANA stations, to obtain the
discharge of solids used the database of the LAPEGEOF. The three-dimensional simulation was performed using the
Digital Elevation Model - MDE, applied to Blender 2.81a software, allowing landscape modeling and animation of
the water that moved vertically in an animation, the river height levels were acquired from the Cáceres Fluvial
Agency - Navy of Brazil. The results obtained showed that the recharge / capture area stands out for the
lithological occurrences to be Utiariti Formation, Araras Formation and Santa Helena Intrusive Suite, the units
of the The most extensive relief is the Depression of the Paraguay River and the Planalto dos Parecis. As for the
pedological coverage, the soils with the highest occurrences are the Argissolo Vermelho- Yellow (33.35%),
Latossolo Vermelho-Amerelo (27.16%) and the Quartossenic Neossolo (22.02%) The highest precipitation
values occur between December to March. At the Pantanal Norte the predominant geological occurrence is the
Pantanal Formation - facies alluvial deposits (61.18%), the Plains and Pantanais Mato-Grossense unit
corresponds (91.86%) of the area and the soils that stand out are Planossolo (45.61%) and Argilúvicos
plinthosol. Regarding the use and coverage in the catchment area, the pastures with 54.53% and in the North
Pantanal the Cerrado (Campestre) area (74.15%). O pluviometric index registered a variation between 0.23 to
159.40 mm, while the flow measured ranged from the equivalent of 169.39 to 1,220.31 m3 / s. The
three-dimensional simulation provided to identify horizontal (overflowing to plain) and vertical floods (increase
in water level) by accumulation of water volume. The information obtained by fluviometric ruler showed water
level variation from 0.70 to 5.97 m, these valleys were used for the three compartments under study at
different altitudes.