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#Digital raster graphic drg series
Geological Survey (original data compiler, editor and publisher) Series identification: Digital Raster Graphics (DRGs) are scanned color images of USGS. Originators: State of Connecticut, Department of Environmental Protection (data publisher) U.S. Use and reproduction This item is in the public domain. Title: Statewide Mosaic of USGS 7.5 Minute Topographic Quadrangle Maps for Connecticut. Topographic maps, Imagery and Base Maps, and Geoscientific Information Year Geology resources and constraints Monterey County, California Place(s) Lew Rosenberg, Consulting Geologist Collection Downloadable data are provided in native coordinate system or projection. This layer is presented in the WGS84 coordinate system for web display purposes.
Lew Rosenberg, Consulting Geologist, Templeton, Calif. Digital Raster Graphic for Monterey County, California, 1974. A digital raster graphic is a digital image resulting from scanning a paper USGS topographic map for use on a computer. DEM's or DOQ's, to produce a hybrid digital file.
DRG's can also be merged with other digital data, e.g. 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. This layer is part of a collection describing Geology resources and constraints Monterey County, California. The DRG shows the area of Monterey County, California. This digital raster graphic (DRG) is a composite raster image of two scanned 1974 USGS topographic maps including the collar information, georeferenced to the Calfornia State Plane grid.
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