The waterfall is located at the south end of Barr Creek as it plunges into the Rogue River over a carved cliff surrounded by walls of petrified volcanic ash as a consequence of the Mount Mazama eruption.

Barr Creek Falls is located at the southernmost tip of the Prospect State Scenic Viewpoint.

The United States Geological Survey (USGS) places the falls at coordinates 42°44′46″N 122°29′44″W / 42.7462386°N 122.4955911°W / 42.7462386; -122.4955911 at an elevation of 2,529 feet (771 m) above sea level.

[6] The trail-head has an illustrative map of the area including the trail to the Avenue of Boulders and Barr Creek Falls.

The trail is approximately half a mile from the parking lot to Barr Creek Falls viewpoint.