Howard A Hanson Reservoir
King County, Washington784 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
Howard A Hanson Reservoir in King County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 784 acres.
Howard A Hanson Reservoir is a 784-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 Howard A Hanson Reservoir 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 Howard A Hanson Reservoir
These are the measurements Washington Ecology publishes for Howard A Hanson Reservoir, 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.
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Answers come straight from the public measurements and survey records on this page.
→ Howard A Hanson Reservoir water level: the live USGS gauge reading
Lake Details
Surface area
784 acres
Shoreline
13.6 mi
No bathymetric survey has been published for Howard A Hanson Reservoir, so its depth is not documented here.
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Frequently asked questions about Howard A Hanson Reservoir
Where is Howard A Hanson Reservoir?
- Howard A Hanson Reservoir 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 Howard A Hanson Reservoir?
- Howard A Hanson Reservoir in King County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 784 acres.
Is Howard A Hanson Reservoir 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 Howard A Hanson Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.