U.S. Geological Survey, National Geospatial Technical Operations Center, 2023, USGS Map Indices Downloadable Data Collection: U.S. Geological Survey.
Summary
This data consists of data grids for the United States, including 1 X 2 Degree, 1 X 1 Degree, 30 X 60 Minute, 15 X 15 Minute, 7.5 X 7.5 Minute, and 3.75 X 3.75 Minute, along with custom-sized products, where a traditionally-published map exists. The grid was generated using ESRI ArcInfo GIS software. The grids represent the extent of topographic maps published by the USGS.
Summary
This data consists of data grids for the United States, including 1 X 2 Degree, 1 X 1 Degree, 30 X 60 Minute, 15 X 15 Minute, 7.5 X 7.5 Minute, and 3.75 X 3.75 Minute, along with custom-sized products, where a traditionally-published map exists. The grid was generated using ESRI ArcInfo GIS software. The grids represent the extent of topographic maps published by the USGS.
