Description: Ayres Associates provided the City of Wausau, Wisconsin with digital, color orthoimagery services in 2015 as part of WROC. Aerial imagery was collected on April 27th using a Microsoft Vexcel UltraCam Eagle sensor mounted in a fixed-wing aircraft. Aerial imagery was collected to support 0.25 ground sample distance (GSD) orthoimagery to meet ASPRS Class II horizontal accuracy specifications at 1" = 50' map scale. The horizontal accuracy meets or exceeds 1.0 foot RMSE using the National Standards for Spatial Data Accuracy (NSSDA) standards. Resultant orthoimagery was rectified to the new DEM from a LiDAR surface created in 2015 as part of the 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 tiling schematic. The total project area is 50 sq. miles, plus a 500-ft buffer around the city boundary. Geographic Description: The City of Wausau is located in north-central Wisconsin, where it is the county seat of Marathon County. The Wausau area is at the center of cultivation for American ginseng, as 95% of commercial ginseng grown in the United States comes from Marathon County. 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 the City of Wausau in 2015 to provide consistent deliverable products and accuracy standards for each of the participating entities.