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Bald Eagles

American Bald Eagle

American bald eagle - USFWS.

At the time of the refuge's establishment in 1969, the number of nesting bald eagles pairs had plummeted to less than 500 in the lower 48 states.

Wildlife & Habitat

About the Complex

Potomac River NWR Complex

In 1998, Elizabeth Hartwell Mason Neck National Wildlife Refuge (NWR), Occoquan Bay NWR, and Featherstone NWR, were reorganized into the Potomac River National Wildlife Refuge Complex.

Elizabeth Hartwell Mason Neck is managed as part of the Potomac River NWR Complex.

Learn more about the complex 

About the NWRS

National Wildlife Refuge System


The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America’s fish, wildlife, and plants.

Learn more about the NWRS  

Follow NWRS Online


Around the Refuge

  • Internship Opportunities

    Does working outdoors, leading programs, or maintaining trails interest you? Our team is recruiting highly motivated individuals to serve in our 2015 Internship Program. Click below for more information.

    2015 Internship Position Announcements
  • Volunteers Needed!

    Volunteers on the refuge - USFWS.

    There are many ways to get involved at Mason Neck National Wildlife Refuge. Volunteers help maintain the refuge by assisting with interpretive programs, helping out with refuge cleanups, invasive plant mapping and many other projects.

    Click here for 2015 Volunteer Opportunities
  • Visitor Activities

    Visitor Activities Promo

    There are activities year round at Mason Neck National Wildlife Refuge including wildlife viewing, photography and hunting. Learn more on our Visitor Activities page.

    Visitor Activities
  • Know Before You Go

    Sunset at the refuge - USFWS.

    Make sure you come prepared when visiting the refuge - from April to October biting insects and ticks are prevalent, so bring bug spray! Also, keep an eye out for poison ivy and norther copperhead snakes. Learn more on our Plan Your Visit page.

    Plan Your Visit
Page Photo Credits — All photos courtesy of USFWS unless otherwise noted., Mason Neck National Wildlife Refuge - Bill Wallen.
Last Updated: Feb 04, 2015
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