Zasoby i środowisko · 13.12.1994

National Digital Cartographic Data Base

The U.S. Geological Survey (USGS) needs to obtain Digital Line Graphs (DLG), Digital Elevation Models (DEM), Digital Raster Graphics (DRG), and Digital Orthophotoquads (DOQ) captured from or registered to USGS primary series topographic maps for entry into the National Digital Cartographic Data Base (NDCDB) as part of the public domain. The USGS recognizes the public benefit of obtaining DLG, DEM, DLG, and DOQ data prepared by State and local government agencies, public utilities, and private firms. The USGS seeks to identify other sources of digital map data for areas now lacking DLG, DEM, DRG, or DOQ coverage, and to obtain technically acceptable data through cooperative agreements. When it is in the Government's interest, and subject to the availability of appropriated funds, the USGS will assist qualified organizations in preparing digital map data to USGS standards for NDCDB archiving and public distribution in non-proprietary formats.