Where is Lake Cortez?

Lake Cortez is a lake in Chelan County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.

Lake Cortez

Chelan County, Washington38 acresView map Directions

No nutrient or algae sampling on record from Washington Ecology for this lake.

Area

38 acres

Surface area

Shoreline

1.6 mi

Measured length

Impaired · Nuisance exotic species

See the measurements Directions Where to stay

Lake Cortez in Chelan County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 38 acres.

Loading map…

Lake Cortez is a 38-acre lake in Chelan County, Washington.

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

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Lake Cortez is listed impaired under Clean Water Act §303(d) (IR 4C) for nuisance exotic species. Check local advisories before you swim.

Whether Lake Cortez is safe to swim in today is a call for the Washington State Department of Ecology and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

Get alerts for Lake Cortez →

Water quality measurements for Lake Cortez

These are the measurements Washington Ecology publishes for Lake Cortez, 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 Lake Cortez

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

Lake Details

Surface area

38 acres

Shoreline

1.6 mi

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

Stays via Stay22

Stays near Lake Cortez

Compare lakeside cabins, hotels, and vacation rentals near Lake Cortez in Chelan County, Washington — 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 Lake Cortez

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 Washington’s top lakes →

Follow Lake Cortez’s readings

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

Or email

Fishing Lake Cortez

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

EPA Impairment Status

Lake Cortez is officially listed as impaired under Clean Water Act §303(d) in the 2018 EPA reporting cycle (IR category 4C).

Causes of impairment

Nuisance exotic species

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit WA17020010001405_001_001 · Official waterbody report

Nearby Lakes in Chelan County

Meadow Lake0.5 miView →Upper Wheeler Reservoir8.5 miView →Lake Entiat21 miView →Snow Lakes—View →Roses Lake—View →Dry Lake—View →

Frequently asked questions about Lake Cortez

Where is Lake Cortez?: Lake Cortez is a lake in Chelan County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Lake Cortez?: Lake Cortez in Chelan County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 38 acres.
Is Lake Cortez safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Cortez is listed impaired under Clean Water Act §303(d) (IR 4C) for nuisance exotic species. Check local advisories before you swim.