Detroit Lake

Reservoir in Oregon · 3,653 acres · near Detroit

Detroit Lake has 7 boat ramps and 1 carry-in launch listed as public.

Algal bloom precaution

Oregon Health Authority has a harmful algae precaution for this water (June 18, 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

Past algal blooms

Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2015, 2017, 2018, 2024 and 2026.

state reports compiled by U.S. EPA · checked October 18, 2026

Boating rules

SNW in the North Santiam River above a point 1,100 feet northwest of Hoover Rock · 1 zone on Detroit Lake rule
SNW in the Breitenbush Arm between the Breitenbush River Highway 22 bridge and a point approximately 2000 feet downstream of the bridge · 1 zone on Detroit Lake rule
SNW within 200 feet of the shoreline, no towed watersports · 1 zone on Detroit Lake rule
SNW within 200 yards of the northwest shore of Piety Knob · 1 zone on Detroit Lake rule
SNW in the Breitenbush River north of the Breitenbush River Highway 22 Bridge · 1 zone on Detroit Lake rule
All boats prohibited inside the log boom enclosure around Detroit Lake Dam · 1 zone on Detroit 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

Cove Creek Campground · Boat ramp · near Detroit · free
Detroit Lake State Park - D Ramp · Boat ramp · near Detroit
Detroit Lake State Park - G Ramp · Boat ramp · near Detroit
Hoover Campground · Boat ramp · near Detroit · free
Mongold Low-Water Ramp · Boat ramp · near Detroit
Mongold State Park Upper Ramp · Boat ramp · near Detroit
Piety Island Boat In Site · Carry-in (canoe and kayak) · near Detroit · free
Southshore Day Use Area · Boat ramp · near Detroit

Community

Where people who fish, boat and paddle Detroit Lake talk about it. Lake associations, clubs and local groups will be added as we find them.

Search Reddit: r/oregon Reddit
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Wikidata: Q1201542