Knob Falls is one of a multitude of small waterfalls on the upper Rogue River in the vicinity of Union Creek on the west side of Crater Lake National Park. The falls occur where the river bends around a headland, constrict and plunge about 15 feet into a narrow pool. This may be the most vertical of all the waterfalls along the Rogue River, but it isn't terribly noteworthy. If time is a luxury you possess while in the area, the stroll to the falls is nice and the rocks below provide good lunch spots, but if you are pressed for time and want to see the better waterfalls in the area, skip this one.
- Knob Falls is the Official name of this waterfall.
- Known Alternate Names: Lower Natural Bridge Falls
The name of the falls stems from the large bedrock "knob" where the river bends sharply. The falls are referenced in A Waterfall Lovers Guide to the Pacific Northwest as Lower Natural Bridge Falls.
Knob Falls is located near Natural Bridge and Union Creek along Highway 62 west of Crater Lake National Park. The trailhead is located at the Natural Bridge day use area, a mile south of Union Creek. Find the Upper Rogue Trail (signed for Woodruff Bridge) and follow it for just under 1 1/2 miles to the obvious "knob" where the river bends 180 degrees - a trail follows the promontory to the falls.