Where is Lake Killarney?

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

Lake Killarney

King County, Washington29 acresView map Directions

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

Area

29 acres

Surface area

Shoreline

1.7 mi

Measured length

Impaired · Nutrients (phosphorus, nitrogen)

See the measurements Directions Where to stay

Lake Killarney in King County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 29 acres.

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Lake Killarney is a 29-acre lake in King County, Washington.

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

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Lake Killarney is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Lake Killarney 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 Lake Killarney

These are the measurements Washington Ecology publishes for Lake Killarney, 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 Killarney

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

Lake Details

Surface area

29 acres

Shoreline

1.7 mi

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

Stays via Stay22

Stays near Lake Killarney

Compare lakeside cabins, hotels, and vacation rentals near Lake Killarney 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.

Top-rated places to stay near Lake Killarney

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Follow Lake Killarney’s readings

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Fishing Lake Killarney

→ Lake Killarney fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Lake Killarney is officially listed as impaired under Clean Water Act §303(d) in the 2018 EPA reporting cycle (IR category 5).

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit WA17110019001177_001_001 · Official waterbody report

Nearby Lakes in King County

Lake Geneva0.6 miView →Fivemile Lake1 miView →North Lake1.2 miView →Steel Lake2.9 miView →Star Lake4.7 miView →Angle Lake20 ft clear—View →

Frequently asked questions about Lake Killarney

Where is Lake Killarney?: Lake Killarney 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 Killarney?: Lake Killarney in King County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 29 acres.
Is Lake Killarney safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Killarney is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.