EC Imaging of aquifers beneath watercourses of the Murray Darling Basin Australia David Allen (Groundwater Imaging Pty. Ltd.) and Torleif Dahlin (Teknisk Geologi Lunds Tekniska Högskola Lunds Universitet) SUMMARY____________________________________________________________ Electrical conductivity imaging of numerous rivers segments and canals of the Murray Darling Basin Australia has been conducted using both geo-electric arrays and transient electromagnetic devices towed along the watercourses. Permeable pathways beneath the watercourses are clearly evident due to fresh water moving downwards or saline water moving upwards through them. EC imaging is proving to be a very cost effective tool for managing saline inflow to rivers and seepage loss


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