Hanson Slough
Snohomish County, Washington67 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
Hanson Slough in Snohomish County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 67 acres.
Hanson Slough is a 67-acre lake in Snohomish 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 Hanson Slough 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 Hanson Slough
These are the measurements Washington Ecology publishes for Hanson Slough, 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 Hanson Slough
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
67 acres
Shoreline
1.6 mi
No bathymetric survey has been published for Hanson Slough, so its depth is not documented here.
Stays via Stay22
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Frequently asked questions about Hanson Slough
Where is Hanson Slough?
- Hanson Slough is a lake in Snohomish County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Hanson Slough?
- Hanson Slough in Snohomish County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 67 acres.
Is Hanson Slough 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 Hanson Slough come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.