The airborne LiDAR survey was conducted in fall 2011 and spring-summer 2012 by contractor Watershed Sciences, Inc., of Corvallis, Oregon, over proposed transportation and infrastructure corridors from Prudhoe Bay to the Canada border, Delta Junction to Valdez, and Livengood to the Point MacKenzie area. Funding from the state Gas Pipeline Project Office, Alaska Gasline Development Corporation, and Office of the Federal Coordinator supported the project, which covered a total area of about 3,000 square miles. Survey corridors were a minimum of one mile wide along proposed pipeline routes, one-half mile wide along support roads, such as the Dalton Highway, where existing roads deviate from the pipeline corridors, and much wider in some areas of known potential hazards such as active faults and slope instability. The map shows the areas surveyed and the location of the first LiDAR data release of approximately 660 square miles. DGGS will release data for the remaining areas over the next few months following delivery from the contractor.