Oregon / Prineville Reservoir /
Powderhouse Cove
Boat ramp · on Prineville Reservoir · near Prineville · Oregon
Oregon Health Authority has a harmful algae precaution for this water (September 30, 2026). Water monitoring has confirmed that the level of cyanotoxins in Prineville Reservoir are below recreational guideline values for people. However, levels detected are still above OHA’s educational guideline values for dogs, and owners should keep their pets away from areas with blooms. Initial advisory was issued July 27th. 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): 2025 and 2026.
state reports compiled by U.S. EPA · checked October 18, 2026
Status not reported No closure has been posted for this launch, but its agency does not publish open or closed status. Check with the managing agency before you tow.
At the launch
- Type
- Boat ramp
- Fee
- Free
- Ramp lanes
- 2
- Managed by
- Oregon Parks and Recreation Department
- Website
- oregon.gov
- Coordinates
- 44.10605, -120.77773
Boating rules
- SNW within 200 feet of the shore line and no towed watersports · a zone at or next to this launch rule
- SNW within 200 feet of Powder House Cove boat ramp · a zone at or next to this launch 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.
Conditions
- Weather forecast for this launch · National Weather Service
- Lake level at Prineville Reservoir and Arthur R. Bowman Dam · Reclamation
Lake level: Prineville Reservoir
Today's level loads here; without it, see the agency's page below.
Level from Bureau of Reclamation, Reclamation Information Sharing Environment (RISE) (Prineville Reservoir and Arthur R. Bowman Dam), daily; the agency's page. Levels change; check conditions at the ramp before you launch.
On Prineville Reservoir
Reservoir in Oregon. All launches on Prineville Reservoir.
Community
Where people who use Prineville Reservoir talk about it.
Nearby launches
- County Boat Ramp Day Use · 2.3 mi · Prineville Reservoir
- Prineville Reservoir State Park · 3.1 mi · Prineville Reservoir
- Roberts Bay West · 3.3 mi · Prineville Reservoir
- Jasper Point Day Use Ramp · 4.7 mi · Prineville Reservoir
- Ochoco Reservoir County Park · 14.3 mi · Ochoco Reservoir
- Antelope Flat Reservoir Boat Launch · 20.4 mi · Antelope Flat Reservoir
Sources
- Oregon State Marine Board Boating Access Sites record 4887a65f-b484-4246-9feb-9901cba62a49 · OSMB terms: cite OSMB as the source, describe modifications, no implied endorsement (ArcGIS item 63176689a50541b8863b530b29f9ea36)
- OpenStreetMap n1554887218 © OpenStreetMap contributors, ODbL
Why it is listed as public: listed by Oregon State Marine Board Boating Access Sites. Something wrong, or is this launch private? Send a correction; it goes to a person.