Overview

• Location: Jackson County, Rogue River-Siskiyou National Forest (near Prospect)

• Waterfall Type: Plunge

• Height: ~15 feet (5 m)

• Trail Distance: ~2–3 miles round-trip via trail near Natural Bridge

• Difficulty: Medium

• Best Time to Visit: Spring through fall

History & Background

Lower Natural Bridge Falls is a small plunge waterfall near the Natural Bridge area of the upper Rogue River near Prospect in Jackson County. Natural Bridge is one of the Rogue River’s most remarkable geological features — a section where the river disappears entirely into a lava tube for a short distance before re-emerging, creating a natural ‘bridge’ of rock across the river. The Natural Bridge Campground and recreation area is managed by the Rogue River-Siskiyou National Forest and provides access to this extraordinary geological site, as well as to the Rogue River Trail that connects downstream toward Crater Lake. The upper Rogue corridor near Prospect has been used for recreation since the late 19th century, and the natural bridge and nearby falls are among the most visited features of the upper Rogue.

Geology

Lower Natural Bridge Falls drops over a lava ledge on the upper Rogue River at approximately 3,400 feet elevation in the volcanic landscape below Crater Lake. The entire Natural Bridge area is dominated by young volcanic geology — lava flows from the Crater Lake (Mount Mazama) eruption approximately 7,700 years ago covered this section of the Rogue River, creating the lava tube that forms Natural Bridge and the various ledges and falls downstream. The surrounding forest of ponderosa pine, white fir, and lodgepole pine transitions to the higher-elevation subalpine environment of Crater Lake just miles to the northeast.

Directions & Access

• Nearest City: Prospect, OR (~10 miles west); Medford, OR (~50 miles west)

• Trail Information:

  • Access via the Natural Bridge recreation area trail along the upper Rogue River; the path follows the river corridor downstream from the Natural Bridge feature to the falls

  • Natural Bridge itself is a remarkable sight — the river disappears into the lava tube and re-emerges — and can be viewed from the suspension footbridge at the campground; the falls are a continuation of the river corridor downstream

• Parking:

  • Natural Bridge Campground/Day Use Area parking; no fee for day use; campground has fee sites

• Accessibility:

  • The Natural Bridge area has accessible pathways; the trail to the falls involves some natural terrain

Best Time to Visit

• Spring: Best flows from Cascade snowmelt; the river corridor is vivid and green; Natural Bridge most impressive with high water

• Summer: Lower flows; popular camping area; the volcanic landscape above Prospect is beautiful in summer

• Fall: Excellent hiking conditions; fall color in the forest; Crater Lake nearby at its clearest

• Winter: Road access may be affected by snow; Natural Bridge area generally accessible

Nearby Attractions

• Natural Bridge (Rogue River lava tube)

• Mill Creek Falls (Prospect)

• Prospect State Scenic Viewpoint

• Crater Lake National Park (~30 miles northeast)

• Union Creek Resort

References

• Links:

  • Rogue River-Siskiyou National Forest

  • Travel Oregon – Prospect and Upper Rogue

• Books:

  • Oregon Waterfalls by Greg Plumb

  • Waterfall Lover's Guide: Pacific Northwest