Merrill Lake
Cowlitz County, Washington277 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
- 77 ft max depth
Merrill Lake in Cowlitz County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 77 ft. Surface area: 277 acres.
Merrill Lake is a 277-acre lake in Cowlitz County, Washington with a maximum depth of 77 feet.
Source: EPA Water Quality Portal sampling records, WA Ecology. Methodology: how these readings are compared.
What Merrill Lake is good for
From access and monitoring records, not editorial picks.
- Deep water77 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 Merrill 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 Merrill Lake
These are the measurements Washington Ecology publishes for Merrill 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 Merrill Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
77 ft
Surface area
277 acres
Shoreline
5.3 mi
Stays via Stay22
Stays near Merrill Lake
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Fishing Merrill Lake
Nearby Lakes in Cowlitz County
Frequently asked questions about Merrill Lake
Where is Merrill Lake?
- Merrill Lake is a lake in Cowlitz County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Merrill Lake?
- Merrill Lake in Cowlitz County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 77 ft. Surface area: 277 acres.
Is Merrill Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Merrill Lake?
- Merrill Lake has a maximum depth of 77 feet. The lake covers 277 acres.
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Where this data comes from
Measurements for Merrill Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.