The National Atlas of the United States displays several hundred layers of GIS data for the United States. The data is organized into the following categories.
Agriculture (Information about Farms, Livestock, and Crops) Environment (Information about hazardous sites) People (Information about crime rates, economy, food stamps, jobs, mortality rates, population density, etc.) Biology [...]
Last year I created detailed terrain maps of several countries and US states by combining elevation and texture data from several different sources. Since then, I have had numerous requests to create high resolution terrain maps of other countries and regions. Instead of continuing to create individual custom maps, I have decided to [...]
I stumbled across a new (to me anyways) website from Microsoft Live Labs called SeaDragon which will process huge image files and make them available in such a way that they can easily be viewed online.
So far I have been able to get it to process a map as large [...]
**UPDATE 8/13/2011** – I have made a couple important updates. First, I have released a global version of the very popular 90-meter terrain map. I have also relaxed the licensing restrictions to allow for commercial use. See below for more details on both of these changes.
There are many ways to [...]
The Clean Earth overlays replace the default Google Earth textures at high altitudes for the entire Earth. Instead of seeing inconsistent strips of different aerial/satellite photography that look very unrealistic, you can now see a nice clean natural looking Earth surface. The Clean Earth overlays use hill shading to exaggerate the vertical elevations of the [...]
This terrain map of California was created by combining the NASA Blue Marble imagery with the global elevation data from the Space Shuttle Radar Topography Mission (SRTM). The combination of these two data sets creates an amazing new way of viewing the Earth’s topography and landforms.
The SRTM elevation data is detailed enough [...]
Major Land Resource Areas (MLRA) and Land Resource Regions (LRR) are areas of the United States with similar geography (physiography, climate, geology, etc.), as defined by the US Department of Agriculture and the Natural Resources Conservation Service. These areas are used for large scale interstate planning. There are approximately 280 MLRAs in the United [...]
The Global Geographic Names database contains the names and location of approximately 6.5 million features of interest throughout the world. The features include mountains, government buildings, forests, parks, and many more. Many of the locations in this database are already included in the default Google Earth installation when you enable the Places [...]