Big Marsh
Door County, Wisconsin35 acresView mapDirections
No nutrient or algae sampling on record from Wisconsin DNR for this lake.
Big Marsh in Door County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Surface area: 35 acres.
Big Marsh is a 35-acre lake in Door County, Wisconsin.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Big Marsh is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Big Marsh
These are the measurements Wisconsin DNR publishes for Big Marsh, 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 Big Marsh
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
35 acres
No bathymetric survey has been published for Big Marsh, so its depth is not documented here.
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Fishing Big Marsh
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Frequently asked questions about Big Marsh
Where is Big Marsh?
- Big Marsh is a lake in Door County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Big Marsh?
- Big Marsh in Door County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Surface area: 35 acres.
Is Big Marsh safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Big Marsh come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.