Unverified — not yet confirmed in person
Cooper River swimming hole (Salmon La Sac)
UnverifiedBeginner (0-30 ft)47.40495, -121.10389
Confirmed by 0 jumpers
A deep emerald pool where the Cooper River slows just above its confluence with the Cle Elum, ringed by smooth granite ledges and a rope swing. Jumps run 10 to 25 feet off the rock, and the whole thing is a five-minute walk from the campground.
Jumps at this location
Lower ledges
10 ft
Beginner (0-30 ft)
Upper ledge
25 ft
Beginner (0-30 ft)
Warnings
Snowmelt-cold water with current at the inlet. Granite is slick when wet; scout the landing under the rope swing.
Access
SR 903 north of Roslyn to the Salmon La Sac campground and the Cooper River trailhead (Northwest Forest Pass). Short walk along the Cooper River Trail to the pool.
Best conditions
Late June through early September once snowmelt drops.
Submitted by SmartLeap Field Research