Pass Lake
Lake in Washington · 108 acres · near Rosario Beach
Pass Lake is a 108-acre lake near Rosario Beach in Washington, with 1 public boat ramp listed here. The deepest point is about 20 feet.
Past algal blooms
Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2019 to 2026.
state reports compiled by U.S. EPA · checked October 20, 2026
Depth contours in feet from Washington Ecology; deepest point about 20 ft. Lake levels and bottoms change; not for navigation.
Boat launches on Pass Lake
- Pass Lake Boat Launch · Boat ramp · near Rosario Beach