Lost Lake
Mason County, Washington123 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
- 60 ft max depth
- Public access
Lost Lake in Mason County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 60 ft. Surface area: 123 acres.
Lost Lake is a 123-acre lake in Mason County, Washington with a maximum depth of 60 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 Lost Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Deep water60 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lost 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.
Water quality measurements for Lost Lake
These are the measurements Washington Ecology publishes for Lost 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 Lost Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
60 ft
Surface area
123 acres
Shoreline
2.7 mi
Public access
Yes
Listed by Washington Ecology
Recreation & Access
- Lost LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Stays near Lost Lake
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Fishing Lost Lake
Nearby Lakes in Mason County
Frequently asked questions about Lost Lake
Where is Lost Lake?
- Lost 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 Lost Lake?
- Lost Lake in Mason County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 60 ft. Surface area: 123 acres.
Is Lost Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lost Lake?
- Lost Lake has a maximum depth of 60 feet. The lake covers 123 acres.
Are there boat ramps on Lost Lake?
- Lost Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lost Lake. Public access is listed as yes.
Can I fish at Lost Lake?
- Lost 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.
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Where this data comes from
Measurements for Lost Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory