Friends of Dyke Marsh is a volunteer group dedicated to preserving, restoring and enhancing Dyke Marsh, a freshwater tidal marsh in Fairfax County on the Potomac River just south of Alexandria, Virginia. The Dyke Marsh Wildlife Preserve is administered by the National Park Service.

What Is Dyke Marsh?

The Dyke Marsh Wildlife Preserve is a freshwater, tidal marsh on the Virginia side of the Potomac River in Fairfax County. It is a unit of the George Washington Memorial Parkway, U.S. National Park Service. For more information, visit the NPS website at www.nps.gov/gwmp.

FODMers Help Stabilize the Marsh

On March 24, 2025, FODM volunteers planted 50 native black willow (Sali nigra) tree stakes in Dyke Marsh, phase two of a project to help stem erosion and stabilize the tidal zone of the wetland. In 2024, FODMers planted 150 willow tree stakes.

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Mighty Mussels

They are rather nondescript, sedentary mollusks with hinged shells, but they are important. Mussels are nature’s “cleanup crew” and can help clean up the Potomac River’s water quality, FODMers learned at their February 23, 2025, meeting.

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Reaching Out to the Larger Community

On February 8, 2025, the Friends of Dyke Marsh tabled at Mount Vernon Supervisor Dan Storck's town hall meeting, the 38th Mount Vernon town hall meeting, an event initiated by the late Mount Vernon Supervisor Gerry Hyland.

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Dyke Marsh’s Winter Beauty

On January 5 and 6, 2025, Dyke Marsh was blanketed with six to eight inches of snow and became a shimmering, icy landscape riddled with varying shades of white, blue and gray.

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Raptors Wow the Crowd

The birds were the stars on September 14, 2024, when around 450 people filled Fort Hunt Park’s Pavilion A to learn about six species of raptors.

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Caring for Creation Motivates Group to Support Dyke Marsh

From the tiny blue-fronted dancer damselfly (Argia apicalis) perched on a twig to a fledged, first-year bald eagle (Haliaeetus leucocephalus) returning to its parent-less Haul Road nest, 25 people from Good Shepherd Catholic Church’s Care for Creation group enjoyed many of nature’s delights on a June 15, 2024, walk led by three FODMers and National Park Service ranger, Daniel Brier.

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