A new chloride leaching approach to the estimation of diffuse recharge following a change in land use

Glen R. Walker, Ian D. Jolly, Peter G. Cook

Research output: Contribution to journalArticlepeer-review

103 Citations (Scopus)

Abstract

A new approach has been developed to estimate the increase in groundwater recharge following land-use modification. The approach uses the degree of leaching of chloride to quantify soilwater drainage below the root zone which ultimately leads to groundwater recharge. It is more general than similar previously reported techniques for analysing transient chloride profiles to infer recharge rates, and hence has wider application. We have applied the technique to a field situation in southern Australia where clearing of native vegetation for agricultural production leads to large increases in groundwater recharge. The examples serve to demonstrate the technique and some of the practical difficulties in the application of solutes techniques to recharge estimation.

Original languageEnglish
Pages (from-to)49-67
Number of pages19
JournalJournal of Hydrology
Volume128
Issue number1-4
DOIs
Publication statusPublished - Nov 1991
Externally publishedYes

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