Wisconsin--Columbia CountyThis project established digital, 4-band orthoimagery for Columbia County, Wisconsin as part of the Wisconsin Regional Orthoimagery Consortium (WROC).Ayres Associates provided Columbia County, Wisconsin, with digital, 4-band orthoimagery services in 2025 as part of WROC. The aerial imagery was collected on March 11th, 12th, and April 6th using a Leica Geosystems DMC III sensor at 7.25 cm GSD mounted in a fixed-wing aircraft. Aerial imagery was collected to support 0.25 foot ground sample distance (GSD) orthoimagery at 1 inch = 50 feet map scale. The 3-inch pixel orthoimagery was produced to meet or exceed 0.66 foot RMSEH according to ASPRS Positional Accuracy Standards for Digital Geospatial Data 2024. Resultant orthoimagery was rectified to a DEM created from lidar previously collected in 2020. Orthoimagery was delivered in GeoTiff and MrSID tiles and a project-wide MrSID mosaic. The orthoimagery was delivered according to a PLSS quarter section tile schematic.GeoTIFFhttps://geodata.wisc.edu/catalog/4bb457ba-7b07-4d74-8afd-6dfeff114b91engWisconsinViewPublicImagery and Base MapsAerial Imagery for Columbia County, WI 2025DatasetsWisconsin2025University of Wisconsin-Madison