The Knowledge of aquifer regulatory capacity on the natural discharge of rivers, even on a regional scale, provides subsidies that help in the knowledge of the quantitative correlation between surface water and groundwater. This research is quantitative in nature and is specifically a case study. The objective of this work is to evaluate and quantify the relationship between surface and groundwater from hydrograph analyzes of the total flow in the river fish basin. Itabira city is located in the river fish basin and located in the country's largest mining center, presents numerous problems of water supply. From the fluviometric data of five spillways, it was possible to quantify the surface and underground components using the Barnes method through hydrographs of the total flow of the Peixe river basin. The percentage of subterranean deforestation related to the total deforestation showed values higher than 60%. The springs and wells drilled in the Cauê Aquifer, present the highest flows, followed by the wells drilled in the Piracicaba Group. The base flow does not present intermittence, it is assumed that the aquifers maintain the flow of the rivers even in drier periods, and there is a correlation between the geological, geomorphological and hydrological and hydrogeological conditions.

Esse trabalho apresenta um estudo sobre o aproveitamento da energia solar para carregamentos de carros elétricos com objetivo de avaliar a economia de energia elétrica para Sistema Interligado Nacional (SIN) e a redução de gases do efeito estufa pela implantação de sistemas fotovoltaicos on-grid em postos de recarga no Brasil. Para o abastecimento diário de dois veículos modelo Caoa Cherry Arrizo 5e com recarga de bateria de 50kW durante o período de uma hora, realizou-se o dimensionamento de sistemas on-grid para todos os postos de cada estado do Brasil, cadastrados na Agência Nacional do Petróleo, Gás Natural e Biocombustíveis (ANP), considerando dados das capitais brasileiras. Os cálculos do dimensionamento resultam em uma economia para o SIN por meio de geração distribuída de 1.436.683 MWh/ano de energia produzida pelos postos de abastecimento. No quesito ambiental, verifica-se com uma redução nas emissões de gases do efeito estufa de 107.751,24 toneladas de  por ano. As conclusões obtidas por meio da análise dos resultados evidenciam os benefícios alcançados com a implantação dos sistemas.

Itapemirim River basin and part of the Itabapoana River basin are located in the southern area of the State of Espírito Santo, covering 26 municipalities. Knowledge of these basins’ hydrogeological characteristics provides information on the groundwater potential and the behavior of the river base flow during dry seasons. The objective of this study is to assess the relationship between surface and underground waters from the analysis of hydrograph units and information from tubular well logs. The Itabapoana River basin had the highest flow rates with mean specific capacity of 1415.1 m3 /h/m, while Itapemirim River basin wells yielded 0.6941 m3 /h/m. The percentage of underground discharge in relation to the total discharge exceeded 60% during all seasons in both basins.