Use Constraints: There is no guarantee of warranty concerning the accuracy of these data. StatusĮARTH SCIENCE -> LAND SURFACE -> Topography -> LandformsĮARTH SCIENCE -> LAND SURFACE -> Topography -> ReliefĮARTH SCIENCE -> LAND SURFACE -> Topography -> ContoursĪlthough these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made by the USGS regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty.
#Digital raster graphic drg full
Although a standard DRG is an effective mapping tool, its full potential for digital production is realized in combination with other digital data. These include combined DRGs and DOQs for revising and collecting digital data, DRGs and DEMs for creating shaded-relief DRGs and combinations of DRG, DOQ, and DLG data. It can also be used to produce "hybrid" products. The DRG can help assess the completeness of digital data from other mapping agencies. The DRG is used for validating digital line graphs (DLGs) and for DLG data collection and revision. Included in the 1:24,000- and 1:25,000-scale series are provisional (P) maps and color orthophoto maps. The source for DRGs are the standard quadrangle format USGS topographic maps as described in the Federal Geographic Data Committee "Manual of Federal Geographic Data Products".
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