Check out an aerial photo of Nanjemoy Creek in Charles County and you’ll see why it has been called “the green thumb” of the Potomac River — about 80 percent of the land in the Nanjemoy watershed remains forested. Relatively few roads carve through these woods, though human activities like residential development and incompatible forestry threaten this emerald-green oasis. The Nature Conservancy has embraced the challenge: Retain the character of one of the state’s most pristine watersheds, where just eight percent of the land is currently protected.
The Conservancy has identified a project area of more than 48,000 acres offering the rare opportunity to save and restore this enormous block of contiguous forest. This remarkable situation exists, in part, because the landscape has not been fragmented as it has in other places — only about 150 private landowners own 25,106 acres (76 percent) of the unprotected land here. Since establishing Nanjemoy Creek Preserve in 1978, The Nature Conservancy has worked to assemble the forest puzzle, helping conserve more than 3,510 acres to date (3,204 of which is the Conservancy's preserve).
The preserve was established to protect a large breeding colony of great blue herons that returns here every February. But the preserve encompasses much more. Local farmer and naturalist Calvert R. Posey, site manager for many years, kept a detailed field journal listing 48 tree species, 86 wildflowers (including rare Virginia wild ginger), and numerous creatures — snakes, skinks and salamanders, to name a few. Posey noted that his lists on this richly endowed place were by no means complete.
The preserve is just one special feature of the Nanjemoy Project Area, a recreational dream. Visitors can spend a day cycling, kayaking, fishing, or just enjoying a tranquil picnic.
The Conservancy’s ultimate goal is to protect a forested ecosystem large enough to function as nature intended it and also large enough to encompass most, if not all, common and rare species. Raccoons, bobcats, skunks and squirrels inhabit the woods; otters swim the creek; and the rare dwarf wedge mussel (found in only 20 sites worldwide) thrives in the sandy-mud bottom of stream banks. The deep forests here also attract many species of migratory songbirds.
To keep disturbance of the rookery at a minimum, Nanjemoy Great Blue Heron Preserve is not open to the public. Researchers may gain access by appointment.
For more information, contact Gabe Cahalan at (301) 897-8570 or firstname.lastname@example.org.
Take a self-guided canoe or kayak tour – launch at Friendship Landing.
Take a virtual tour in our Nanjemoy photo gallery.
A day on the water connects people to nature and each other.