Dyke Marsh

With a total size of 485 acres, Dyke Marsh is one of the largest remaining pieces of freshwater tidal wetlands left in the Baltimore-Washington Metropolitan Area.

[1] The marsh is managed by the National Park Service as part of the George Washington Memorial Parkway.

Dyke Marsh is located off the George Washington Memorial Parkway at the Belle Haven Marina exit.

Vernon trolley line (whose light rail tracks were replaced by the George Washington Memorial Parkway in 1932.)

Many other species of plant occupy the marsh including several types of Sagittaria, arrow arum, pickerelweed, sweetflag, spatter-pond lily, and northern wild rice.

Exotic vines, such as the Asian porcelain berry, Japanese honeysuckle, and Asiatic bittersweet have begun smothering parts of the floodplain forest.

Dyke Marsh is just east of the George Washington Memorial Parkway and the Mount Vernon Trail.

Thousands of bicyclists, walkers, and runners go through Dyke Marsh on a weekly basis on the Mount Vernon Trail.

Birdwatchers, animal lovers, and nature enthusiasts often visit the sitting area in an effort to catch a glimpse of what Dyke Marsh has to offer.