Description: Ayres Associates provided Richland County, Wisconsin, with digital color orthoimagery services in 2015 as part of WROC. The aerial imagery was collected on April 14 and 16, 2015, using a Leica Geosystems ADS100 sensor mounted in a fixed-wing aircraft. Aerial imagery was collected to support 1.0 foot ground sample distance (GSD) orthoimagery to meet ASPRS Class II horizontal accuracy specifications at 1” = 200’ map scale. The horizontal accuracy meets or exceeds 4.0 feet RMSE using the National Standard for Spatial Data Accuracy (NSSDA) standards. Resultant orthoimagery was rectified to the new DEM from existing LiDAR created for the CDBG funded WROC program. Orthoimagery was delivered in PLSS section GeoTiff and MrSID tiles and a project wide MrSID mosaic. The orthoimagery was delivered according to a four section tile schematic. The total project area is 589 square miles, plus a 500-ft buffer around the county boundary.Geographic Description:Richland County is located in southwestern Wisconsin in the Western Upland area of the state. The county’s southern border is formed by the Wisconsin River and the landscape consists of steep hillsides, fertile valleys and an abundance of springs. While 50% of the land area is comprised by forrested land, areas such as the City of Richland Center provide urbanization.Supplemental Information:The Wisconsin Regional Orthophotography Consortium (WROC) is a multi-entity group led by regional planning commissions (RPCs) and WROC representatives from Ayres Associates. The goal of the consortium is to build and sustain a multi-participant program to acquire digital orthoimagery and elevation data throughout Wisconsin. Orthoimagery was collected for Richland County in 2015 to provide consistent deliverable products and accuracy standards for each of the participating entities.