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

Raptors Enthrall All

Over 400 people were captivated by beautiful raptors on November 4, 2023, when the Friends of Dyke Marsh and the National Park Service hosted Secret Gardens Birds and Bees at Fort Hunt Park’s Pavilion A.

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Fall Leaves Brighten Dyke Marsh

Dyke Marsh was aflame in color on October 23, 2023, for the annual fall colors walk sponsored by the Friends of Dyke Marsh and the Potowmack Chapter of the Virginia Native Plant Society (VNPS).

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Connecting in the Community

On June 17, 2023, the Friends of Dyke Marsh participated in the annual Gum Springs Community Day/Juneteenth Festival, this year celebrating 190 years since the community’s founding by West Ford.

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FODM Receives Tree Planting Grant

The Friends of Dyke Marsh have received a grant of $3,250 to plant trees in the marsh to replace some of the pumpkin ash trees (Fraxinus profunda) that are dying because of the invasive emerald ash borer (Agrilus planipennis).

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