Abstract: The Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic map georeferenced to the Tennessee State Plane Coordinate System 1983 grid.
Purpose: A DRG is useful as a source or background layer in a GIS, as a means to perform quality assurance on other digital products, and as a source for the collection and revision of DLG data. DRG's can also be merged with other digital data, e.g. DEM's or DOQ's, to produce a hybrid digital file.
Supplemental Information: The State Plane Coordinate System 1983 survey feet coordinates of pixel 1,1 are x = 1708462.66 y = 516851.14

Progress: Complete
Update Frequency: Irregular

Theme Keywords: None, digital raster graphic, DRG
Place Keywords: US, TN, Rally Hill, TN, 35086-F7, 64NE

Access Constraints: None
Usage Constraints: Acknowledgement of the U.S. Tennessee Valley Authority, Geographic Partnerships Program would be appreciated in products derived from these data.