The park features facilities for boating and fishing as well as trails for hiking, cycling, and horseback riding.

The park saw "Stage A" development when, in the 1966, the General Assembly authorized funds for camping and picnicking sites, roads, utilities, buildings, and other features.

[9] Sections of Seneca Creek can be travelled by kayak, especially south of Route 28, Darnestown Road, or further north during periods of high water.

The highlight of the hayride is when the tour guide shines a flashlight into a particular glade and dozens of pairs of white-tailed deer eyes light up in response.

[12] The partially restored Black Rock Mill has interpretive exhibits featuring a history of area floods.

[3] The Blair Witch Project was partially filmed in the Seneca Creek State Park in October 1997,[13] and the rock band O.A.R.