Description: Agency: TN Department of Transportation. Description: This map service is made up of multiple imagery sources including: satellite imagery, imagery from the National Agriculture Imagery Program (NAIP), black and white imagery from the Tennessee Base Mapping Program (1997-2006), and color imagery from TDOT (2008-present). The color imagery is updated on a county-by-county basis as new imagery is made available. Projection: TN State Plane NAD83 Feet.