A Digital Orthophoto Quadrangle (DOQ) is a type of aerial photograph that has been geometrically corrected to ensure that the scale is uniform across the image. This means that distances measured on the photograph are accurate, making it useful for mapping and analysis. DOQs are often used in geographic information systems (GIS) and by urban planners to assess land use and development. DOQs are typically produced from aerial imagery captured by aircraft or drones. They provide detailed visual information about the landscape, including features like roads, buildings, and vegetation. This makes them valuable for various applications, including environmental studies, land management, and emergency response planning.