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

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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Warming Up to Ticks and Mosquitoes

On May 17, 2023, the Friends of Dyke Marsh hosted a presentation by Kasha Helget on the value of ticks and mosquitoes, how to identify them, their life cycles and eco-friendly management responses.

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Owl Fascination Abounds

Spring 2023 brought a frenzy of reproduction in the natural world. Many people have stood for hours watching and photographing a barred owl (Strix varia) pair and a great horned owl (Bubo virginianus) pair raise their young. In early May, observers began to see the fledglings of both pairs exploring the immediate environs.

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