Modelagem de água subterrânea no aquífero aluvionar do rio Palhano na localidade de Chile, Ibicuitinga-CE, utilizando o software PMWIN

Abstract

This work has na objective of doing a computational modelling of alluvial aquifer in Chile Comunity, District of Ibicuitinga-CE. In this modeling, it was used only bibliographic data and no field survey was done. The research area has 4200 meters, in East-West direction, and 1200 meters, in North-South direction, where Palhano River passes through. Geologically, it is composed by unconsolidated sediments over crystalline basement. The alluvium has the depth ranging from 2,60 to 5,60 meters, a 44,7 m/d hydraulic conductivity, a 25% effective porosity and a 1,624 m2/d specific yield. It is also submitted to a fourmonth recharge period (feb-may) and a eight-month pumping period (jun-jan) with no rain (dry season). In west part of the area, there is a surface dam and, in the east part, a subsurface dam. During the dry season, the alluvim was subjected to a maximum pumping rate of 27000 L/h until the final of the period. Beyond this value, the well became dry. The modeling was done with PMWIN software.