Lake Hancock
King County, Washington229 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
Lake Hancock in King County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 229 acres.
Lake Hancock is a 229-acre lake in King 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 Lake Hancock 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 Lake Hancock
These are the measurements Washington Ecology publishes for Lake Hancock, 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 Hancock
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
229 acres
Shoreline
2.7 mi
No bathymetric survey has been published for Lake Hancock, so its depth is not documented here.
Stays via Stay22
Stays near Lake Hancock
Compare lakeside cabins, hotels, and vacation rentals near Lake Hancock in King 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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Fishing Lake Hancock
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Frequently asked questions about Lake Hancock
Where is Lake Hancock?
- Lake Hancock is a lake in King 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 Hancock?
- Lake Hancock in King County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 229 acres.
Is Lake Hancock 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 Lake Hancock come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.