I have had many requests over the years to add a USGS topographic Map overlay without the map borders. This is a huge project and I have finally decided to move forward with it.
You can read more about this project below, or skip right to the store and purchase them.
The USGS has announced a schedule for release of over 100,000 historic topographic map quadrangles covering 32 states by the end of 2011. This is an amazing resource for anyone interested in studying the history of an area in the United States.
Kansas is the first state in the release schedule [...]
The United States Department of Agriculture Natural Resources Conservation Service has compiled detailed soils data for approximately 95 percent of the counties in the United States. The soils data contains information such as the texture, drainage, depth, and chemical characteristics of the soil. This data can be accessed by reviewing hard copy Soil [...]
The Geologic Map of North America was published in 2005 by John C. Reed, Jr. (USGS), John O. Wheeler (Geological Survey of Canada), and Brian E. Tucholke (Woods Hole Oceanographic Institution). This is an amazing piece of work that covers the entire continent of North America at a scale of 1:5,000,000. The map [...]
Update 11/28/2011 Seamless Topo Maps – I have released a seamless version (without the map borders) version of the USGS Topographic Map layer for Google Earth. In addition to removing the map borders, hill shading has been added using the 10-meter National Elevation Dataset (NED), which greatly enhances the topography and makes it [...]
**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 U.S. General Soil Map consists of general soil association units. It was developed by the National Cooperative Soil Survey and supersedes the State Soil Geographic (STATSGO) dataset published in 1994. It consists of a broad-based inventory of soils and non-soil areas that occur in a repeatable pattern on the landscape and that can be [...]