An update to the land cover over Phase 1 of the Northwest Territories study area was undertaken using Landsat TM imagery collected from 2006 to 2008 (c.2007); the Phase 2 and Phase 3 area consisted of Landsat TM imagery collected from 2007 to 2013 (c.2010). The image classification procedure followed the methods of Earth Observation of Sustainable Development of Forests (EOSD), which employs unsupervised classifications and cluster labeling techniques to classify twenty-four land cover classes. The main objectives for updating the land cover were: i) to replace the original circa 2000 EOSD land cover with an EOSD product more current to the natural disturbances of the landscape (ex., fire and forest regeneration), and ii) to improve upon some of the issues in creating the original land cover data (e.g., NoData, seamlines, misclassifications).