USGS
Which States Have the Highest Percentage of Water Area?
Caitlin Dempsey
Water shapes U.S. states' geography and ecosystems. Which states have the highest and lowest percentages of area covered by perennial water?
This Tools Helps You Figure Out Which Satellite Bands to Use for Remote Sensing
Caitlin Dempsey
The USGS developed the Spectral Characteristics Viewer to let users view how different Earth observation satellite instruments can be used for their remote sensing needs.
Free GIS Books
Caitlin Dempsey
Most of these free GIS books are available in downloadable PDF format and can be read from a computer or on an eBook reader.
USGS Releases Two Decades of Land Cover Change for the Contiguous United States
Caitlin Dempsey
The USGS has updated land cover maps for the conterminous United States, which show how the country's landscapes have changed over the last 18 years.
Find Your Way Downstream with Streamer
Rebecca Maxwell
Water is essential for life on the planet, and tool from the U.S. Geological Survey (USGS) makes it easy and fun ...