PNWSights
Koosah Falls drops in a broad white curtain over a dark basalt cliff, with mist billowing into the blue-green pool below. Dense evergreen forest frames the wide, long-exposure scene, softening the water into silky streaks.

Koosah Falls

McKenzie Bridge, OR

Koosah Falls drops 70 feet over a basalt cliff on the McKenzie River, approximately a quarter mile downstream from Sahalie Falls. Spring-fed tributaries emerge from the surrounding lava walls, adding side cascades to the main falls. The pool below displays vivid blue-green coloration from the volcanic mineral content.

Photography Guide

Best Time
morning
Crowds
Moderate
Shot Types
long-exposurelandscapewide
Best Seasons
springsummerfall
Practical Tips
Accessible via the Waterfall Loop Trail from either the Sahalie Falls or Carmen Reservoir trailheads. The trail can be slippery when wet; sturdy footwear is recommended.

Is it a good day to go?

7-day outlook

Mild, dry days with light winds are the most comfortable for a visit.

Forecast by Open-Meteo. Verdicts weigh the forecast against the conditions that suit this spot.

Author's Comments

Koosah is the quieter sister. Sahalie gets the crowds and the parking lot energy, and most people stop there and turn around, which is the small mercy that makes Koosah worth the quarter mile of trail downstream. The water here is the photograph. That blue-green at the base of the falls is not a trick of the light or a filter applied later - it is the actual color of the McKenzie River where it emerges from the volcanic aquifer, and it reads especially vivid against the dark basalt. I have stood at the lower viewpoint in late June, mid-morning, when the sun is high enough to reach into the gorge but the mist off the falls is still hanging in the air, and the entire scene goes saturated in a way that feels almost engineered. The side cascades are the detail I would not want to miss. They emerge from the lava walls themselves, spring-fed and steady, and they give the wider compositions a layered quality that the main drop alone does not provide. A long exposure smooths the chaos of the seventy-foot plunge into something closer to fabric, and the side seeps become silver threads against the black rock. Come early. The trail is genuinely slippery and the rocks near the viewpoints do not forgive carelessness. Morning light reaches the pool before the gorge fills with afternoon shadow, and the crowds thin considerably if you are there before the Sahalie lot fills up. Bring a polarizer. The reflections off the wet basalt will eat your highlights otherwise, and the color of that pool is the whole reason to be standing there.

Gallery

Koosah Falls drops in a broad white curtain over a dark basalt cliff, with mist billowing into the blue-green pool below. Dense evergreen forest frames the wide, long-exposure scene, softening the water into silky streaks. Photo: icetsarina / Wikimedia Commons / CC BY-SA 4.0
Three silky white streams of Koosah Falls drop over a dark basalt cliff into a misty blue-green pool, surrounded by dense evergreen forest. Ferny branches frame the right side while moss and autumn-tinted foliage cling to the rock ledges. Photo: U.S. Forest Service- Pacific Northwest Region / Wikimedia Commons / Public domain
Koosah Falls pours over a dark basalt ledge in a soft, long-exposure curtain, with bright white water dropping into a deep blue-green pool below. Evergreen trees frame the falls on both sides, and a sunlit branch crosses the right foreground. Photo: PJ Blalock / Wikimedia Commons / Public domain
Long-exposure view of Koosah Falls spilling in silky white ribbons over a dark basalt ledge, with a strong main drop beside thinner side cascades. Dense evergreen forest frames the falls, and the misty pool below glows blue-green at the base. Photo: U.S. Forest Service- Pacific Northwest Region / Wikimedia Commons / Public domain
Long-exposure Koosah Falls pours in a silky white curtain into a blue-green pool, framed by snow-laden evergreen branches on both sides. The winter forest setting and misty water create a quiet, cold scene around the basalt-edged drop. Photo: Oregon Department of Transportation / Wikimedia Commons / CC BY 2.0
Sunlit Koosah Falls spills over a dark basalt cliff into a misty blue-green pool, with a vivid rainbow arcing through the spray. Dense evergreen trees frame the wide view, and smaller side cascades drop along the rock wall. Photo: Gary Halvorson, Oregon State Archives / Wikimedia Commons / CC BY 4.0
Koosah Falls pours in a smooth, long-exposure sheet over a basalt ledge into a vivid blue-green pool, framed by dense evergreens and a tall fir trunk in the foreground. Soft morning light warms the mist and the mossy forest around the falls. Photo: Gary Halvorson, Oregon State Archives / Wikimedia Commons / CC BY 4.0
Sunlight catches a mossy basalt cliff above Koosah Falls, with thin side streams trickling into the blue-green pool below. A vivid rainbow arcs through the mist in the forested gorge, and dark leaves silhouette the foreground. Photo: Gary Halvorson, Oregon State Archives / Wikimedia Commons / CC BY 4.0
Koosah Falls pours in a silky white sheet over a dark basalt cliff into a misty blue-green pool, surrounded by dense evergreen forest. Sunlight filters through the trees, highlighting mossy rock walls and a smaller side cascade on the left. Photo: Gary Halvorson, Oregon State Archives / Wikimedia Commons / CC BY 4.0
Koosah Falls drops in a silky white curtain over a dark basalt ledge into a misty blue-green pool, framed by dense evergreen forest. Morning light brightens the trees and a narrow side cascade spills down the left edge of the cliff. Photo: Gary Halvorson, Oregon State Archives / Wikimedia Commons / CC BY 4.0

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