<p>Planar failure occurrences are prevalent in Canada Hill during prolonged periods of heavy rainfall. The incidences of planar failures in the study area are less frequent than other types of failures, but it is the most destructive. It is critical to understand the geological structures that contribute to landslide occurrences in the sedimentary rock slopes to improve the assessment of landslide susceptibility. Planar failure occurs when a structural discontinuity plane daylight towards the slope at a gentler angle than the slope angle but greater than the friction angle of the discontinuity plane. The geometrical relationship between the bedding attitude and the slope topography was used to evaluate potential planar failures. This study used the method of interpolating direction cosine data to spatially distribute the bedding plane information across the study area from irregularly distributed bedding measurements. This was assessed with LiDAR-derived DEM in a geographic information system (GIS) platform to determine slopes with various levels of potential for planar failures. Slopes that face northwest at the northwestern section of Canada Hill has the highest potential for planar failures. This suggests a high conformity between the slopes and the bedding attitude. The potential of planar failure is lower for slopes facing the east. This method provides a significant indication of the zones that are potential to planar failures across Canada Hill which can be used as one of the key components in future landslide susceptibility assessments. In addition, this method can be applied for landscape-scale modelling applications in regions with simple geological structures.</p>