The Ballston Beaver Pond, as it’s called, was initially designed to collect stormwater runoff from I-66. But that started to change in the 1990s when beavers moved in and dammed up the drainage system, creating a pond and wetlands to form. The Beaver Pond is now a habitat frequented by muskrat, geese, ducks, heron, egrets, redwing blackbirds, fish, turtles and the occasional beaver.
The Beaver Pond is located next to a bike trail that connects Ballston and the Custis Trail, just north of the ramp from Fairfax Drive to I-66.