Fact Sheet 087–01
SummaryThe locations of aerial photographs from the National Aerial Photography Program (NAPP) and the National High Altitude Photography (NHAP) program are shown on flight-line indexes. Flight-line indexes are maps on which the centers of aerial photographs are represented as dots and identified by roll and frame numbers and other information. By circling your area of interest using such information as towns, roads, and names, you can see which photographs cover that area. |
First posted August 2001 Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. |
U.S. Geological Survey, 2001, How to select and order NAPP and NHAP photographs: U.S. Geological Survey Fact Sheet 087-01, 3 p., available only online at https://pubs.usgs.gov/fs/2001/0087/.