Where is Triangle Lake?

Triangle Lake is a lake in Lane County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.

Are there boat ramps on Triangle Lake?

Triangle Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Triangle Lake Landing. Public access is listed as yes.

Can I fish at Triangle Lake?

Triangle Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Oregon's fish and wildlife agency, so check its current regulations before you go.

Triangle Lake

Lane County, Oregon305 acresView map Directions

No nutrient or algae sampling on record from Oregon DEQ for this lake.

Area

305 acres

Surface area

Impaired · Temperature
Public access

See the measurements Directions Where to stay

Triangle Lake in Lane County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 305 acres.

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Triangle Lake is a 305-acre lake in Lane County, Oregon. Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, Oregon DEQ. Methodology: how these readings are compared.

What Triangle Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Triangle Lake is listed impaired under Clean Water Act §303(d) (IR 5) for temperature. Check local advisories before you swim.

Whether Triangle Lake is safe to swim in today is a call for the Oregon Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Triangle Lake

These are the measurements Oregon DEQ publishes for Triangle Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. TSI undefined.

Ask about Triangle Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

305 acres

Public access

Yes

Listed by Oregon DEQ

No bathymetric survey has been published for Triangle Lake, so its depth is not documented here.

Recreation & Access

Boat Landings

Yes

Public Access

Triangle Lake LandingPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Triangle Lake

Compare lakeside cabins, hotels, and vacation rentals near Triangle Lake in Lane County, Oregon — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Triangle Lake

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Follow Triangle Lake’s readings

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Fishing Triangle Lake

→ Triangle Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Triangle Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Temperature

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit OR_LK_1710020606_02_100168 · Official waterbody report

Nearby Lakes in Lane County

Little Lake0.5 miView →Hult Log Storage Reservoir6.4 miView →Fern Ridge Lake15 miView →Mercer Lake25.2 miView →Collard Lake—View →Clear Lake—View →

Frequently asked questions about Triangle Lake

Where is Triangle Lake?: Triangle Lake is a lake in Lane County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Triangle Lake?: Triangle Lake in Lane County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 305 acres.
Is Triangle Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Triangle Lake is listed impaired under Clean Water Act §303(d) (IR 5) for temperature. Check local advisories before you swim.
Are there boat ramps on Triangle Lake?: Triangle Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Triangle Lake Landing. Public access is listed as yes.
Can I fish at Triangle Lake?: Triangle Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Oregon's fish and wildlife agency, so check its current regulations before you go.