Koosah Falls

Koosah Falls is a waterfall in Willamette National Forest where the McKenzie River drops over a basalt ledge, creating a broad and powerful cascade through coniferous forest. The water plunges down in a dramatic rush, forming an impressive display within the surrounding woodland environment.

The site was shaped by volcanic activity that created the basalt ledge over which the water now falls. The name was given by indigenous language groups long before the area became accessible to visitors in modern times.

The name comes from Chinook Jargon, where Koosah means sky, reflecting the water's deep connection to nature. Indigenous communities maintained long-standing ties to these lands and waters before European settlement in the region.

Access is via Highway 126, about 5 kilometers south of the junction with Highway 20, where parking areas are available. The location is straightforward to find and well-marked for visitor convenience.

The falls maintain steady water flow throughout the year, fed by underground springs and aquifers from nearby Clear Lake, which sits on volcanic plateaus. This means visitors see consistent water power even during drier months.

Location: Linn County

GPS coordinates: 44.34461,-122.00058

Latest update: December 12, 2025 16:40