Insights from multiple, high-resolution borehole methods to assess groundwater vertical flow pathways in a weathered soil-crystalline rock system in Sao Paulo, Brazil

•Combination of multiple high-resolution borehole characterization methods.•Hydrogeologic unit boundaries are not predicted solely from the geologic logs.•Variable hydraulic connectivity between and within fresh and weathered units.•Higher transmissivities associated with intercalation of fracture sets and 3 lithologies.