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

Twin Lakes

Snohomish County, Washington33 acresView map Directions

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

Area

33 acres

Surface area

Shoreline

1.4 mi

Measured length

Impaired · Pathogens (E. coli, fecal)

See the measurements Directions Where to stay

Twin Lakes in Snohomish County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 33 acres.

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Twin Lakes is a 33-acre lake in Snohomish County, Washington.

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

Swimming conditions

No reading

Bacteria advisory

Nutrient and algae readings are not a swimming clearance. Twin Lakes is listed impaired under Clean Water Act §303(d) (IR 4A) for pathogens (E. coli, fecal). Check local advisories before you swim.

Whether Twin Lakes 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.

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Water quality measurements for Twin Lakes

These are the measurements Washington Ecology publishes for Twin Lakes, 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 Twin Lakes

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

Lake Details

Surface area

33 acres

Shoreline

1.4 mi

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

Stays via Stay22

Stays near Twin Lakes

Compare lakeside cabins, hotels, and vacation rentals near Twin Lakes in Snohomish 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 Twin Lakes

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Follow Twin Lakes’s readings

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Fishing Twin Lakes

→ Twin Lakes fishing regulations (limits, seasons, special rules)

EPA Impairment Status

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

Causes of impairment

Pathogens (E. coli, fecal)

Designated uses not supporting: Recreation.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit WA17110008000668_001_001 · Official waterbody report

Nearby Lakes in Snohomish County

Riley Lake5 miView →Bosworth Lake9.1 miView →Lake Armstrong8.9 miView →Lake Roesiger17.1 ft clear12.8 miView →Lake Cassidy10.8 miView →Lake Twentytwo11.3 miView →

Frequently asked questions about Twin Lakes

Where is Twin Lakes?: Twin Lakes 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 Twin Lakes?: Twin Lakes in Snohomish County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 33 acres.
Is Twin Lakes safe to swim in?: Nutrient and algae readings are not a swimming clearance. Twin Lakes is listed impaired under Clean Water Act §303(d) (IR 4A) for pathogens (E. coli, fecal). Check local advisories before you swim.