What Data Do We Use?

The USGS Data set has been updated as of 1/5/2023

1 Meter

The USGS Data set has been updated as of 12/12/2022

Updated USGS

As of 8/2/2022, 1/9 ARC Data is available for the United States

Ultra Vs Very High
Ultra High Vs High
Ultra High Vs Medium
Ultra Vs Low

As of 2/24/2020, USGS Landcover for the lower 48 has been updated to 2016 data

USGS Updated data

Elevation data sources

Resolution of Elevation Data
Source for CONUS and Hawai: USGS NED 1/3 at Seamless data distribution system

Source Shuttle Radar Topography Mission (SRTM) data products 1 arcsecond

Source for Alaska: USGS Alasaka NED 2 at Seamless data distribution system

Source for Northern Canada and void filling: Natural Resources Canada CDED at Geobase

Source for Northern Canada and void filling: Natural Resources Canada CANVEC at Geobase

Source for Northern Canada and void filling: ASTER

Source of SRTM Void filled for Eurasia: Viewfinder Panoramas

Land cover data sources

Landcover Resolution
Source CONUS: NLCD 2016 Seamless data distribution system

Source Canada: Natural Resources Canada Circa 2000 at Geobase

Source Europe: Corine landcover at European Environment Agency

Source World: Globcover at European Environment Agency