Topographic derivative datasets for the United States-Canada transboundary Geospatial Fabric
Dates
Publication Date
2020
Time Period
2020
Revision
2020-10-27
Citation
Bock, A.R, Santiago, M., Wieczorek, M.E., Foks, S.S., Norton, P.A., and Lombard, M.A., 2020, Geospatial Fabric for National Hydrologic Modeling, version 1.1 (ver. 3.0, November 2021): U.S. Geological Survey data release, https://doi.org/10.5066/P971JAGF.
Summary
This U.S. Geological Survey (USGS) data release record consists of topographic data themes that cover the United States-Canada Transboundary Geospatial Fabric (TGF) domain. The 30-meter (m) raster data sets included under Topographic Derivatives are: 1) digital elevation (dem.tif) , 2) topographic wetness index (TWI, twi100X.tif) ,3) slope (rise over run, slope100X.tif), 4) aspect (asp100X.tif), and flow direction (fdr.tif). In some instances, values were multiplied by 100 and converted from double precision to integer format to reduce file sizes. All file formats are in GeoTIFF (Geographic Tagged Imaged Format).
Summary
This U.S. Geological Survey (USGS) data release record consists of topographic data themes that cover the United States-Canada Transboundary Geospatial Fabric (TGF) domain. The 30-meter (m) raster data sets included under Topographic Derivatives are: 1) digital elevation (dem.tif) , 2) topographic wetness index (TWI, twi100X.tif) ,3) slope (rise over run, slope100X.tif), 4) aspect (asp100X.tif), and flow direction (fdr.tif). In some instances, values were multiplied by 100 and converted from double precision to integer format to reduce file sizes. All file formats are in GeoTIFF (Geographic Tagged Imaged Format).
Revision completed on October 27, 2020. To review the changes that were made, see “Geospatial Fabric for National Hydrologic Modeling, version 1.2.txt” in the attached files section.
