The 1988 fires created a lot of changes in land cover in Greater Yellowstone Area, an area of several million acres administered by the Park Service, Forest Service and other Federal, State and private owners. Remotely sensed data, such as aerial photography and imagery collected by satellites, provide an excellent source of information to pinpoint these changes and to assess damage. Two burned area surveys were performed. The first, known as Preliminary Burned Area Survey was performed with high altitude color infrared photography acquired on September 15, 1988. It provided a map and area summary for five burn-related categories, at 200 acres mapping unit, useful for resource assessment and planning (completed December, 1988). The second, more detailed survey was done with Landsat digital data from October 2, 1988, combined with information from aerial photography. This survey, done at five acre mapping units, provided a more precise estimate of actual burned area, and may serve for post fire reviews and scientific research.