A regional landslide hazards mapping initiative was initiated by the Geological Survey of Canada to provide information on the types and regional distribution of landslides along a proposed natural gas pipeline corridor in the Mackenzie Valley, Northwest Territories. Over 1800 landslides and other natural terrain hazards were mapped in the study area and integrated into a GIS platform towards the development of a database. Analyses of landslide mapping in the Mackenzie Valley Study Area (MVSA) indicate an average density of one landslide per 5 km2 and show that the dominant landslide types are retrogressive thaw flows (28%) and active layer detachments (26%). About 47% of all landslides took place in moraine deposits. The qualitative parametric method used to develop a landslide susceptibility map has produced good preliminary validation with respects to landslide occurrences in the Travaillant-Thunder Pilot Site (TTPS).