Approximate - nearest available gauge. Use as general reference only.
The trip starts and ends at the Salmon La Sac Campground's day use area adjacent to the river and on the upstream river right side of the Salmon La Sac Bridge. This is the point you drive to where you take out on the Cle Elum River. From this point start your hike a short distance up the road to the trailhead and then continue on the Waptus Lake Trail.