The primary objective of the research is to understand the significance of the effect of bedrock profile on the seismic amplifications in soft soil deposits. Inclined soil-bedrock interfaces lead to simultaneous p- and s- wave loading on soils, and whether ignoring them may lead to design deficiencies. The response of a site in Orleans with a deep Leda clay deposit at the center, but with a concaved bedrock profile, is evaluated using 2-D numerical analysis. The seismic response of Leda clay on a hypothetical horizontal bedrock (representing conventional practice), and two different natural bedrock basins has been studied. The NBCC-2015 design spectra compatible earthquake shaking was considered. The comparisons between the conventional practice and the response of the 2-D basin demonstrate that assessment of the cyclic loading intensity is significantly affected by the basin shape. This indicates that ignoring basin geometry effects might lead to unsafe liquefaction susceptibility assessments.