The book deals with an exploratory approach to the local groundwater scenario in the city of Pau dos Ferros/RN, containing tools to help infer the data explored: field survey, univariate statistical analysis, linear correlation, spatial modeling of isolines, in addition to the approach to current environmental legislation; integrating information, enabling future decision-making. Presented in an original and very didactic way, this work was the result of a monograph developed by the authors, including: explanations and analysis within an applied practical exploratory context.