[1] Electrokinetic effects of water flow during pumping 8 tests have been shown to generate surface Streaming 9 Potential (SP) anomalies of several tens of mV that are well 10 correlated with the geometry of the water table. It follows that 11 SP measurements can be used to estimate aquifer hydraulic 12 properties. We have developed an inversion scheme for 13 surface SP data generated by flow pumping and found that we 14 are able to estimate the hydraulic conductivity and the depth 15 and the thickness of the aquifer. We applied our inversion 16 scheme to the data from Bogoslovsky and Ogilvy [1973
