Oregon /
Siltcoos Lake
Lake in Oregon · 3,325 acres · near Dunes City, North Beach, Siltcoos
Siltcoos Lake has 2 boat ramps listed as public.
Oregon Health Authority has a harmful algae precaution for this water (July 8, 2026). Precaution issued due to low-level presence of cyanobacteria. Avoid contact with discoloured water or scum, and keep pets and children out of it.
Oregon Health Authority · checked October 18, 2026
Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2026.
state reports compiled by U.S. EPA · checked October 18, 2026
Boating rules
- SNW within 200 feet of a marina, designated public launching ramp or marked swimming area · 4 zones on Siltcoos Lake rule
- SNW within the Miller Arm north of the buoy line, located at the entrance near Nightingales’ Fishing Camp, during the period of May 1 through September 31 · 1 zone on Siltcoos Lake rule
- SNW between shore and buoy line at the mouth if Kiechle Arm beginning at a point at the east shoreline of Arrowhead Point and extending northerly approximately 900 yards to a point approximately 100 yards off shore of Camp Baker during the period of June · 1 zone on Siltcoos Lake rule
From the boating rules map of Oregon State Marine Board (rules zones joined to our waters and launches; not endorsed by OSMB), read October 18, 2026. A map of rules is a guide: the regulation's text and the posted signs govern.
Launches
- Ada County Ramp · Boat ramp · near Dunes City
- Westlake County Park · Boat ramp · near Dunes City · free
Community
Where people who fish, boat and paddle Siltcoos Lake talk about it. Lake associations, clubs and local groups will be added as we find them.
Wikidata: Q7349115