Oregon /
Diamond Lake
Lake in Oregon · 3,132 acres · near Diamond Lake
Diamond Lake has 5 boat ramps listed as public.
Oregon Health Authority has a harmful algae precaution for this water (August 21, 2026). Precaution issued due to visible bloom (see image below). 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
- 10 mph limit (entire lake) · all of Diamond 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
- Diamond Lake Campground - C Loop · Boat ramp · near Diamond Lake · free
- Diamond Lake Campground - M Loop · Boat ramp · near Diamond Lake · free
- North End Boat Ramp · Boat ramp · near Diamond Lake · free
- South Shore Boating Site · Boat ramp · near Diamond Lake
- Thielsen View · Boat ramp · near Diamond Lake · free
Community
Where people who fish, boat and paddle Diamond Lake talk about it. Lake associations, clubs and local groups will be added as we find them.
Wikidata: Q821118