Description: The Mackenzie Valley Air Photo (MVAP) Project is a multi-year, multimillion dollar mapping project (2003-2008) involving three federal departments -- Indian and Northern Affairs Canada (INAC), Natural Resources Canada, Environment Canada -- and the Government of Northwest Territories as partners. The INAC-lead project is part of a federal government program to support and prepare for development of northern oil and gas, on behalf of federal and territorial government agencies, aboriginal land claim groups, industry, and other interest groups. The data represent digital topographic contour lines of the Mackenzie River, Northwest Territories, which spans from the Alberta border to the Beaufort Sea (10° of latitude). MVAP data represents 709 topographic contour lines tiles over three UTM zones (8 to 10). The 1:30,000 scale data is partitioned into 10 square kilometres tiles for the Mackenzie River delta and valley project area (48,300 square kilometres).