Estimativa da recarga em uma unidade detrítica de uma microbacia do rio Piranga (MG) / Estimate of the recharge in a detrítica unit of a microbasin of the river Piranga (MG)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The present work has the aim of estimate the recharge for a phreatic granular aquifer located at Piranga river drainage basin, at Paula Cândido (MG) municipality area. Three techniques were used in order to achieve this recharge: ground-water inventory, water level variation and ground-water discharge measurement. The water level variation evaluation was based on five observation wells. Ground water discharge measurements were done throughout a spillway installed at a small stream that drains and a hydrometer installed at a spring, both of them located into the studied micro basin. The evaluation of ground water recharge based on ground-water inventory method was carried out through a software, named SH 2.0 and was based on a infiltration model proposed by Green-Ampt and at total evaporation calculated according to Penman-Monteith. A complete physical characterization of the studied area was done, in order to allow a better knowledge of local geology, aquifer units and data-acquisition, for use as input data for SH 2.0 software. The water level variation method result in a recharge of 183.3 mm/year, while the result obtained through ground-water inventory method was 377,0 mm/year. Finally, the ground water discharge method resulted in a recharge of 181.3 mm/year. The calculated values for recharge fit the results obtained by other authors in Brazil.

ASSUNTO(S)

hidrologia hydrology hidrogeologia aquifer Águas subterrâneas geotecnica aquíferos hydrogeology groundwater

ACESSO AO ARTIGO

Documentos Relacionados