Overview

• Location: Lane County, Willamette National Forest (McKenzie River, near McKenzie Bridge)

• Waterfall Type: Plunge

• Height: ~49 feet (15 m) — a dry cliff most of the year, with water at the base creating a brilliant turquoise pool

• Trail Distance: ~5 miles round-trip via McKenzie River National Recreation Trail

• Difficulty: Medium

• Best Time to Visit: Year-round; turquoise pool visible in all seasons; best flow November through April when water plunges over the cliff

History & Background

Tamolitch Falls — universally known as the Blue Pool — is one of the most extraordinary natural phenomena in Oregon: a 49-foot dry volcanic cliff that plunges into an impossibly turquoise pool, fed not by water falling from above but by the McKenzie River bubbling up from underground springs at the cliff base. The McKenzie River disappears entirely into a lava tube approximately 4 miles upstream near Carmen Reservoir, then travels underground through porous basalt before re-emerging at the base of the dry cliff as a pool of piercing blue-green water. Only during the wettest winter and spring conditions does enough water flow through the system to also pour over the top of the cliff, creating the actual waterfall. The result is a geological spectacle unlike anything else in the Pacific Northwest — a dry plunge cliff of black lava above a pool of breathtaking color. The Tamolitch name comes from the Chinook Jargon word for ‘bucket’ or ‘tub,’ a reference to the pool. The hike follows the McKenzie River National Recreation Trail, one of Oregon’s finest.

Geology

Tamolitch Falls drops 49 feet over a cliff of High Cascades basalt lava at approximately 2,650 feet elevation on the McKenzie River. The Lava Lake lava flow — erupted from a vent near Belknap Crater approximately 1,500 years ago — dammed the McKenzie River and forced it underground through the porous basalt, where it travels for about 4 miles before re-emerging as springs at the base of the cliff. The pool’s extraordinary turquoise color results from the purity and cold temperature of the spring water, which refracts light to create the intense blue-green hue. When winter precipitation is high enough, the water table rises and water also flows over the top of the cliff, creating the actual plunging falls. The surrounding forest is recovering from the 2020 Holiday Farm Fire.

Directions & Access

• Nearest City: McKenzie Bridge, OR (~6 miles west); Sisters, OR (~20 miles east via McKenzie Pass)

• Trail Information:

  • From the Carmen Reservoir Trailhead (off Hwy 126 near the Carmen Reservoir dam), hike north on the McKenzie River National Recreation Trail approximately 2.5 miles to the Blue Pool; the trail closely follows the river’s dry channel through old lava flows and recovering forest

  • Check current conditions related to 2020 Holiday Farm Fire recovery — the lower McKenzie corridor was significantly affected; swimming in the pool is popular but the water is extremely cold (~34°F) year-round — hypothermia risk is real; Northwest Forest Pass required

• Parking:

  • Carmen Reservoir Trailhead parking area off Highway 126; Northwest Forest Pass required

• Accessibility:

  • Not wheelchair accessible; 5-mile round-trip on natural trail surfaces through lava terrain

Best Time to Visit

• Spring: If the winter has been wet enough, water also flows over the cliff creating the actual falls — a rare and spectacular sight

• Summer: Turquoise pool at its most popular; extremely cold water (34°F) despite summer heat; crowded on weekends

• Fall: Pool beautiful in fall foliage; quieter season; water typically not flowing over the cliff

• Winter: Pool accessible but creek may be frozen at edges; water occasionally flows over the cliff after heavy rain

Nearby Attractions

• McKenzie River National Recreation Trail

• Sahalie and Koosah Falls (~15 miles west)

• Proxy Falls (~10 miles west)

• McKenzie Pass and Dee Wright Observatory (~20 miles east)

• Belknap Hot Springs

References

• Links:

  • Willamette National Forest – USFS

  • Travel Oregon – Blue Pool / Tamolitch Falls

• Books:

  • Oregon Waterfalls by Greg Plumb

  • Waterfall Lover's Guide: Pacific Northwest