REBAIXAMENTO RESIDUAL DO AQUÍFERO GUARANI NA CIDADE DEMARÍLIA, SP.

Abstract

There are four wells drilled in Marilia extracting water from Guarani aquifer, confined in the area that was studied. All of these wells have more than a thousand meters deep. After two decades of operation, the piezometric levels of these wells showed high residual drawdown in order of 50 meters. On this paper we present the theoretical foundations that can explain such downgrades. These downgrades are regional and can take the loss of wells operated if these levels continue going down. Maps are presented to show the difference between the original levels and current levels.