The waterfalls in Ricketts Glen State Park are on the Allegheny Front, which is the boundary between the Allegheny Plateau to the north and the Ridge-and-Valley Appalachians to the south. The headwaters of Kitchen Creek are on the dissected plateau, from which the stream drops approximately 1,000 feet (300 m) in 2.25 miles (3.62 km) as it flows down the steep escarpment of the Allegheny Front. Much of this drop occurs in Glen Leigh and Ganoga Glen, two narrow valleys carved by branches of Kitchen Creek, which come together at Waters Meet.[a] The branch in Glen Leigh has eight named waterfalls and lies north of the confluence, while the branch in Ganoga Glen has ten named waterfalls and lies to the northwest. Ricketts Glen lies south of and downstream from Waters Meet; here the terrain becomes less steep, and there are fewer named waterfalls. The DCNR names only four in Ricketts Glen, all on Kitchen Creek; the USGS GNIS names these and one more on the creek, and Brown's book on Pennsylvania waterfalls adds a sixth named falls on a tributary.