Theseus Lake
Chelan County, Washington29 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
Theseus Lake in Chelan County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 29 acres.
Theseus Lake is a 29-acre lake in Chelan County, Washington.
Source: EPA Water Quality Portal sampling records, WA Ecology. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Theseus Lake 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.
Water quality measurements for Theseus Lake
These are the measurements Washington Ecology publishes for Theseus 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 Theseus Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
29 acres
Shoreline
1 mi
No bathymetric survey has been published for Theseus Lake, so its depth is not documented here.
Stays via Stay22
Stays near Theseus Lake
Compare lakeside cabins, hotels, and vacation rentals near Theseus Lake 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.
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Frequently asked questions about Theseus Lake
Where is Theseus Lake?
- Theseus Lake 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 Theseus Lake?
- Theseus Lake in Chelan County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 29 acres.
Is Theseus Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Theseus Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.