Where is Island Lake?

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

How deep is Island Lake?

Island Lake has a maximum depth of 30 feet. The lake covers 105 acres.

Are there boat ramps on Island Lake?

Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Island Lake. Public access is listed as yes.

Can I fish at Island Lake?

Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Washington's fish and wildlife agency, so check its current regulations before you go.

Island Lake

Mason County, Washington105 acresView map Directions

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

Max depth

30 ft

Bathymetric survey

Area

105 acres

Surface area

Shoreline

1.9 mi

Measured length

Impaired · Nuisance exotic species
30 ft max depth
Public access

See the measurements Directions Where to stay

Island Lake in Mason County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 30 ft. Surface area: 105 acres.

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Island Lake is a 105-acre lake in Mason County, Washington with a maximum depth of 30 feet. Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Island Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water30 ft surveyed max depth

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Island Lake is listed impaired under Clean Water Act §303(d) (IR 4C) for nuisance exotic species. Check local advisories before you swim.

Whether Island Lake 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 Island Lake

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

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

Lake Details

Max depth

30 ft

Surface area

105 acres

Shoreline

1.9 mi

Public access

Yes

Listed by Washington Ecology

Recreation & Access

Boat Landings

Yes

Public Access

Island LakePublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Island Lake

Compare lakeside cabins, hotels, and vacation rentals near Island Lake in Mason 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 Island Lake

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

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Fishing Island Lake

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

EPA Impairment Status

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

Causes of impairment

Nuisance exotic species

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit WA17110019001188_001_001 · Official waterbody report

Nearby Lakes in Mason County

Cranberry Lake3 miView →Lake Limerick4 miView →Isabella Lake5.3 miView →Big Twin Lake6.8 miView →Forbes Lake7.7 miView →Phillips Lake7.3 miView →

Frequently asked questions about Island Lake

Where is Island Lake?: Island Lake is a lake in Mason County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Island Lake?: Island Lake in Mason County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 30 ft. Surface area: 105 acres.
Is Island Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Island Lake is listed impaired under Clean Water Act §303(d) (IR 4C) for nuisance exotic species. Check local advisories before you swim.
How deep is Island Lake?: Island Lake has a maximum depth of 30 feet. The lake covers 105 acres.
Are there boat ramps on Island Lake?: Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Island Lake. Public access is listed as yes.
Can I fish at Island Lake?: Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Washington's fish and wildlife agency, so check its current regulations before you go.