This is a geo-rectified map layer that has been imported into and layered over a base map in ArcGIS. Another overlay, this one of streets, was provided by the Riverside County map database. The map layer sample shown consists of three images. Color contrast on the images was adjusted to show image boundaries. Our photo map layers are useful for any number of projects, including, but not limited to: construction, tidal boundary measurement, vegetation studies, transit projects, etc....