Description: Colour aerial photography at 1:10 000 scale of the Regional Municipality of York and Durham Region taken in 2014 by First Base Solutions Inc. colour digital orthophotography was developed from these images. Orthophotographs combine the image characteristics of the photograph with the geometric qualities of a map. The 2014 digital orthophotographs have a 15cm ground pixel resolution. The 2014 digital orthophotos were subdivided into 1 kilometre by 1 kilometre tiles and were delivered in georeferenced Geotiff image files. The image tiles are horizontally referenced to 6 degree UTM projection and NAD -83 datum. Vertical control datum is referenced to mean sea level as Bench Marks established by the Geodetic Survey of Canada (CGVD28).