Numerical simulation of groundwater flux of the Rio Claro aquifer, northeast region of Rio Claro, SP

Published
2015-08-10
DOI: https://doi.org/10.14295/ras.v29i2.28304
Keywords: Hydrological Modeling. Rio Claro Aquifer. Finite Elements. FeFlow. Modelagem Hidrogeológica. Aquífero Rio Claro. Elementos Finitos. FeFlow.

    Authors

  • Guilherme Emidio Horta Nogueira Universidade Estadual Paulista - Júlio de Mesquita Filho (UNESP)
  • Chang Hung Kiang Professor Titular Instituto de Geociências e Ciências Exatas - Campus de Rio Claro, Departamento de Geologia Aplicada

Abstract

In the UNESP campus area in Rio Claro - SP, the water supply is stemmed solely from the local aquifer, consisting of sandy-silt Cenozoic sediments of the Rio Claro Formation. The mainly objective of this work was to expand the understanding of the Rio Claro Aquifer through the review of the conceptual model and construction of a numerical flow model, using the Finite Element Method as solution. The results obtained after the steady-state and transient simulations, show that the lithological and hydrous heterogeneity of the aquifer unit result in a lower average specific storage; show also that the local drainages act as discharge zones and the campus and neighbors area act as area of recharge. The hydraulic conductivity values vary from 10-6 and 10-4 m/s and the ratio recharge/precipitation was stipulated in 13%. For a hypothetical doubling the rate of exploitation of wells, as well as for the partial or total removal of recharge, it was noticed large change in sensitivity of the model and large impact on the aquifer

How to Cite
Nogueira, G. E. H., & Kiang, C. H. (2015). Numerical simulation of groundwater flux of the Rio Claro aquifer, northeast region of Rio Claro, SP. Águas Subterrâneas, 29(2), 175–190. https://doi.org/10.14295/ras.v29i2.28304