Lake Marian
St. Lawrence County, New York234 acresView mapDirections
No nutrient or algae sampling on record from NY DEC for this lake.
- 153 ft max depth
Lake Marian in St. Lawrence County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 152.9 ft. Surface area: 234 acres.
Lake Marian is a 234-acre lake in St. Lawrence County, New York with a maximum depth of 153 feet (51-foot average).
Source: EPA Water Quality Portal sampling records, NYSDEC. Methodology: how these readings are compared.
What Lake Marian is good for
From access and monitoring records, not editorial picks.
- Deep water152.9 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 Lake Marian is safe to swim in today is a call for the New York Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Marian
These are the measurements NY DEC publishes for Lake Marian, 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 Marian
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
152.9 ft
Average depth
50.5 ft
Surface area
234 acres
Shoreline
4.5 mi
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Stays near Lake Marian
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Fishing Lake Marian
Nearby Lakes in St. Lawrence County
Frequently asked questions about Lake Marian
Where is Lake Marian?
- Lake Marian is a lake in St. Lawrence County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.
What is the water quality of Lake Marian?
- Lake Marian in St. Lawrence County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 152.9 ft. Surface area: 234 acres.
Is Lake Marian safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Marian?
- Lake Marian has a maximum depth of 152.9 feet and an average depth of 50.5 feet. The lake covers 234 acres.
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Where this data comes from
Measurements for Lake Marian come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.