Avaliação da Recarga de Águas Subterrâneas em Ambiente de Cerrado com Base em Modelagem Numérica do Fluxo em Meio Poroso Saturado / Groundwater Recharge Evaluation in Brazilian Cerrado Biome Site by Saturated Zone Flow Numerical Modeling

Santos, Ronaldo Medeiros dos; Koide, Sérgio

doi:10.21168/rbrh.v21n2.p451-465

Cited by 9 publications

(10 citation statements)

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“…For some areas in the Rodeador basin it was not possible to map and compare the values due to the existence of combination between factors that are not present in the Capão Comprido basin, used to formulate the abacus. The recharge rates estimated by the methods "Numerical Modelling-NM" and "Water Table Elevation-WTE" were not included in the comparison, because they perform "effective recharge" estimations [8,41] and, consequently, give lower estimations than the ones obtained with the vadose zone methods, such as SWAT-MODFLOW and WETSPA.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, spatial distribution and recharge rates were estimated using calibration. The methodology developed, summarized in Figure 2, is more detailed in Santos [47] and Santos and Koide [41]. calibration.…”

Section: Numerical Modelling Of the Saturated Zonementioning

confidence: 99%

“…calibration. The methodology developed, summarized in Figure 2, is more detailed in Santos [47] and Santos and Koide [41].…”

Section: Numerical Modelling Of the Saturated Zonementioning

confidence: 99%

“…Steps of the numerical modelling method (A: items of the conceptual hydrogeological model, B: steps of the numerical model implementation, C: database partition between modeling steps, D: steps of the calibration process, E: calibration process evaluation, F: recharge estimation by inverse modelling)[41,47].…”

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confidence: 99%

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Abacus to Predict Groundwater Recharge at Non-Instrumented Hydrographic Basins

Santos

Koide

Távora

et al. 2020

Water

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One of the first steps to implement a policy for groundwater resources management is knowing the groundwater recharge. However, the unavailability of data and resources to execute field studies increase the uncertainty associated with the estimation of groundwater recharge. To fill this gap, the present work aimed to propose a method to predict groundwater recharge at non-instrumented hydrographic basins. The approach proposed is based on using an abacus to execute the transposition and/or regionalization of results generated in an experimental basin. The methodology comprised the estimation and mapping of recharge rates in the experimental basin using three distinct approaches—numerical modelling of the saturated zone, distributed hydrological modelling of the vadose zone, and the method of fluctuation of the water table elevation—and the following generation of the abacus, with average recharge values for combinations of soil class, land use/cover and slope using geographic information systems. The results indicate that the abacus is consistent for some Ferrasol areas, that the reliability of average regionalized values depends on the complexity of the physical environment—soil class, land use/cover, and slope—and that new studies, focusing on the hydro-physical characterization of soils, might produce more reliable estimations.

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Section: Resultsmentioning

confidence: 99%

Section: Numerical Modelling Of the Saturated Zonementioning

confidence: 99%

“…calibration. The methodology developed, summarized in Figure 2, is more detailed in Santos [47] and Santos and Koide [41].…”

Section: Numerical Modelling Of the Saturated Zonementioning

confidence: 99%

mentioning

confidence: 99%

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Abacus to Predict Groundwater Recharge at Non-Instrumented Hydrographic Basins

Santos

Koide

Távora

et al. 2020

Water

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“…The natural recharge of groundwater and the direction of the underground flow are influenced by the duration and intensity of precipitation, topography, soil type and geology, changes in river slope and meanders in the flow channel and by human actions (OLIVEIRA et al, 2017;MEIXNER et al, 2016;SANTOS;KOIDE, 2016;SILVEIRA et al, 2016;MERKEL, 2015b;LUCAS;WENDLAND, 2015;CASCHETTO et al, 2014;VONFREYBERG;MOECK;SCHIRMER, 2015).…”

Section: Introductionmentioning

confidence: 99%

Surface-groundwater interaction in unconfined sedimentary aquifer system in the Brazil’s tropical wet region

Cavazzana

Lastoria

Gabas

2019

RBRH

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Since groundwater and surface waters are important components of the hydrological system, determining their interaction is essential for the efficient management of water resources by predicting the consequences of interference, whether due to the growth of demand or due to climate change. However, integrated scientific studies on these water resources are scarce, including in the Guariroba’s Environmental Protection Area, responsible for supplying 31.3% of the Campo Grandem/MS’s population, representing a local water security element. Thus, this work had as objective to evaluate the interaction between surface-groundwater in an unconfined sedimentary aquifer system, based on hydrograph separation methodologies of base flow, Flow Duration Curve (FDC) analysis, Master Recession Curve (MRC) evaluation and verification of the relationship between the surface flow, piezometric levels (PL) of the wells and the monthly precipitation. The results indicates a proportional relationship between rainfall, superficial flow and PL variations; the FDC smooth slope suggests that the baseflow is sustained by the groundwater discharge, corresponding to 89% of the total flow; the low-flow index indicates that the groundwater’s storage capacity is about 80%; the Base-Flow Index (BFI) ranging from 0.804 to 0.921, indicates a stable flow regime, aquifer’s high permeability conditions, though not uniform, and low runoff.

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