Figure 9
a) Dam structure (and composition – numbered materials are listed in the right legend) defined on the basis of available data and schemes with overlaid piezometers of the central axis and electrical resistivity profile II_II measured in July 2012. b) Dam structure compared with ERT profile II_II measured in September 2013. Note the increased resistivity in the central-left part of profile II_II in September 2013, probably due to reduced water flow (represented by blue arrow) through the dam (bentonite grouts ‘8’ had been enhanced in summer 2013).