Spatial variability of groundwater recharge in a semiarid region

P. G. Cook, G. R. Walker, I. D. Jolly

Research output: Contribution to journalArticlepeer-review

102 Citations (Scopus)


Chloride profiles and electromagnetic techniques are used to estimate rates of groundwater recharge. The use of electromagnetic techniques allows large numbers of estimates to be made in a relatively short period of time, thus permitting statistical analysis of the spatial variability. Recharge rates appear to be approximately log-normally distributed, in accordance with published results for infiltration rate and hydraulic conductivity. The spatial structure is approximately defined by a spherical semivariogram. The results derived are applied to a study of groundwater salinisation. Predictions for future recharge and salt loads to the aquifer are made based on the estimated recharge distribution.

Original languageEnglish
Pages (from-to)195-212
Number of pages18
JournalJournal of Hydrology
Issue number1-4
Publication statusPublished - 1989
Externally publishedYes


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