Basins

Increasing flooding risk affects human safety and health, property, infrastructure, economies, and ecology in many basins across the United States.

Covering approximately 59 million square miles and containing more than half of the free water on Earth, the Pacific is by far the largest of the world’s ocean basins.

The Arctic Ocean is the smallest of the world's five ocean basins.

Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface.