Where is Square Lake?

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

Square Lake

Jefferson County, Oregon50 acresView map Directions

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

Area

50 acres

Surface area

Shoreline

1.2 mi

Measured length

See the measurements Directions Where to stay

Square Lake in Jefferson County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 50 acres.

Loading map…

Square Lake is a 50-acre lake in Jefferson County, Oregon.

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

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Square 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.

Get alerts for Square Lake →

Water quality measurements for Square Lake

These are the measurements Oregon DEQ publishes for Square 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 Square Lake

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

Lake Details

Surface area

50 acres

Shoreline

1.2 mi

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

Stays via Stay22

Stays near Square Lake

Compare lakeside cabins, hotels, and vacation rentals near Square Lake in Jefferson 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 Square Lake

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

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a whole trip? See where to stay at Oregon’s top lakes →

Follow Square Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Square Lake

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

Nearby Lakes in Jefferson County

Blue Lake3 miView →Suttle Lake4.2 miView →Cabot Lake Along Se Side—View →Harvey Lake—View →Monon Lake—View →Island Lake—View →

Frequently asked questions about Square Lake

Where is Square Lake?: Square Lake is a lake in Jefferson County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Square Lake?: Square Lake in Jefferson County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 50 acres.
Is Square Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.