Digital Orthophoto Quadrangle (DOQ) Data [Illinois] {1998}
Description
Illinois National Aerial Photography Program (NAPP) Digital Orthophotography quarter Quadrangle (DOQ) data have been created for 102 counties in the Universal Transverse Mercator (UTM) coordinate system with a NAD83 datum. Data were created using USGS NAPP specifications using black and white film during the leaf-off periods of spring, 1998, 1998, 2000, and 2001 at a 1 meter by 1 meter resolution.
[Creator not found] (n.d.). Digital Orthophoto Quadrangle (DOQ) Data [Illinois] {1998}. . https://clearinghouse.isgs.illinois.edu/data/imagery/1998-2001-illinois-digital-orthophoto-quadrangle-doq-data (imagery)