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Picture of a wetland area in Oxbow National Wildlife Refuge. Trees are changing color and the sun is rising, with a fog over the flooded wetland area.

Wetlands

Updated July 24, 2026

About Wetlands

In 1903, President Roosevelt conserved  Pelican Island and its 3.2 acres of wetlands as the first federal wildlife refuge. There are now more than 2.7 million acres of wetlands managed directly by the Service’s  National Wildlife Refuge System and an additional 1.7 million acres under permanent conservation easements.  These protected wetlands provide stopover and wintering habitat for more than four billion birds from Canada as well as breeding habitat for almost five billion migratory birds enroute to the tropics.  More than 50 percent of threatened and endangered species rely on wetlands and associated aquatic habitat. Wetlands also provide shelter and vital nursery habitat for many species of fish.   

Wetlands cover just over 5 percent of the contiguous United States or 110 million acres (Alaskan wetlands continue to be mapped). There are many types of wetlands including coastal, potholes, vernal pools, bogs, and swamps. All wetlands can provide ecosystem services including essential wildlife habitat, water filtration and water storage to lessen and prevent storm and flood damage. Wetlands also attenuate storm surge along the coasts and are an important repository for storing carbon and improving climate resiliency.  

While the Service does not regulate wetlands, we strongly advocate for conservation of all wetlands on behalf of our trust resources and for the services that they provide for all of us.  

10 Ways You Can Help Conserve WetlandsRead More

Learn more about how we help protect and conserve wetlands

About our programs
Large pool of water surrounded by low tundra grasses under cloud covered sky.
National Wetlands Inventory
The U.S. Fish and Wildlife Service is the principal federal agency tasked with providing information to the public on the extent and status of the nation’s wetland and deepwater habitats, as well as changes to these habitats over time.
prairie potholes
Wetland Mapper
The Wetlands mapper is designed to deliver easy-to-use, map like views of America’s Wetland resources.
landscape of  wetlands with palm trees, ducks, and desert mountains in the background
Wetlands Status and Trends
These reports provide robust scientific estimates of the extent of seventeen wetland and deepwater habitats, as well as change in their area over time.
An emergent marsh composed of spatterdock, herbaceous plants, and wetland-loving shrubs grows along Dead Creek.
Wetland Funding and Technical Assistance
A collection of information about grants, partnerships, and other services we provide to support wetland conservation.
A dragonfly with a long body and four black-spotted wings rests on the end of a reed or blade of grass.
Wetland Conservation News and Stories
Browse our full collection of stories highlighting the importance of wetlands and the role the U.S. Fish and Wildlife Service plays in conserving them.
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