United States
Articles and information related to the geography of the United States

Hydroclimate Whiplash: the Impact on California Wildfires
Hydroclimate whiplash - the rapid swing between drought and heavy precipitation - plays a role in the increasing intensity of California wildfires.

Barrier Islands in the United States
Barrier islands are narrow landforms running parallel to coastlines, protecting shores from storms and erosion while supporting unique ecosystems.

How Many States Are Along the East Coast and West Coast of the United States?
Learn how many states are along the East Coast and how many states are along the West Coast.

Geography of Giant Sequoias
Giant sequoias are one of the longest lived tree species, with the oldest giant sequoia living an estimated 3,400 years.

Which States Have the Highest Percentage of Water Area?
Water shapes U.S. states' geography and ecosystems. Which states have the highest and lowest percentages of area covered by perennial water?