Since groundwater and surface waters are important components of the hydrological system, determining their interaction is essential for the efficient management of water resources by predicting the consequences of interference, whether due to the growth of demand or due to climate change. However, integrated scientific studies on these water resources are scarce, including in the Guariroba’s Environmental Protection Area, responsible for supplying 31.3% of the Campo Grandem/MS’s population, representing a local water security element. Thus, this work had as objective to evaluate the interaction between surface-groundwater in an unconfined sedimentary aquifer system, based on hydrograph separation methodologies of base flow, Flow Duration Curve (FDC) analysis, Master Recession Curve (MRC) evaluation and verification of the relationship between the surface flow, piezometric levels (PL) of the wells and the monthly precipitation. The results indicates a proportional relationship between rainfall, superficial flow and PL variations; the FDC smooth slope suggests that the baseflow is sustained by the groundwater discharge, corresponding to 89% of the total flow; the low-flow index indicates that the groundwater’s storage capacity is about 80%; the Base-Flow Index (BFI) ranging from 0.804 to 0.921, indicates a stable flow regime, aquifer’s high permeability conditions, though not uniform, and low runoff.

O objetivo deste trabalho foi avaliar as condições de clima do Mato Grosso do Sul, por meio do índice de temperatura e umidade (ITU), e apresentar o zoneamento bioclimático relacionado ao conforto térmico. Os valores de ITU foram estimados a partir de dados de temperatura e umidade relativa do ar para o período de 1979 a 2008. Quatro intervalos de ITU foram usados para classificar o desempenho humano (ITU<74: conforto; 74≤ITU<79: quente; 79≤ITU<84: muito quente, e ITU>84: extremamente quente), e dois intervalos para classificar a produção animal (79≤TU<84: perigoso e ITU>84: emergência). Considerandose que o clima predominante tem uma alternância de duas estações ao longo do ano: verão quente e úmido e inverno seco com temperaturas mais amenas, os resultados mostraram maior risco de desconforto térmico no período de outubro a abril, comparado ao período entre maio e setembro. O período mais crítico ocorreu entre dezembro e março. Observa-se que valores de ITU entre 77,9 e 83,9, humanos e animais podem sofrer algum grau de estresse térmico durante as horas mais quentes do dia, afetando ambos negativamente.

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The knowledge of the type and characteristics of the precipitation are very important, mainly for the agricultural planning. And that of the characteristic precipitation can be made knowing the relationship of the precipitation totals with the number of rainfall days happened. In this context, the objective of this study is to characterize the precipitation in whole the city Campo Grande the State of Mato Grosso do Sul establishing a index the two variables. The study was performed using totals monthly data regarding precipitation and number of rainfall days obtained from meteorological stations, in the period of 1970-2008, for the quarters of jan-Feb-Mar, Apr-May-jun, jul-Aug-Sep and out-nov-Dec. The results show that the precipitation index/number of days of rain Q3 increases for the fourth.

Campo Grande city, the capital of Mato Grosso do Sul State, has 40% of its water supply from groundwater system, mainly from Serra Geral Aquifer, but also from Guarani Aquifer and Bauru Aquifer System. The lack of detailed knowledge of the hydrogeology, including hydrochemistry characterizations, has caused loss of wells due to pipe disruption and consequently the decrease of well production. This study aimed at determining the groundwater corrosion potential, as well as the spatial distribution of this parameter in the basalts of Serra Geral Aquifer System in the urban area of Campo Grande. The Langelier Saturation Index (LSI) and Ryznar Stability Index (RSI) have been determined and they indicate that the groundwater has corrosive behavior. According to LSI index, 64% of groundwater are classified as low aggressivity, diminishing from northeast to southwest direction of the studied area, following the pattern of pH values and groundwater´s flow direction. The spatial distribution of this variable can help the management of the water supply system, especially in the specification and maintenance of equipment used in wells.