Koosah falls within Linn County and tailors to backpackers/small group visits. Koosah (meaning sky) was once a trading location for local tribes. This water source joins with the Mckenzie River/Trail and is considered one of the three major waterfalls. It has a great day-use site that allows you to walk in and see the Koosah Falls. I recommend hiking the Waterfalls Loop Trail to see Sahalie Falls as well. Unfortunately, we ran out of time but hope to return to see and complete our full adventure. Nearby you can visit Clear Lake, fed by a natural spring that stays a consistent low temperature that does not allow vegetation to grow, creating an astounding experience for fishing and boating. So, after your hike of the falls stop here for some snacks and rent a boat for $25 to relax. I also recommend checking out Blue Pools that connects later down the McKenzie River closer to Sisters. (Blue Pools names because it is also SO clear!)

See link below for more information through FS:

https://www.fs.usda.gov/recarea/willamette/recarea/?recid=4404