Jo-Mary Lake
Piscataquis County, Maine1,891 acresView mapDirections
No nutrient or algae sampling on record from Maine DEP for this lake.
Jo-Mary Lake in Piscataquis County, Maine has water-quality measurements published by Maine DEP, shown here as reported. Surface area: 1891 acres.
Jo-Mary Lake is a 1,891-acre lake in Piscataquis County, Maine.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Jo-Mary Lake is good for
From access and monitoring records, not editorial picks.
- Big water1,891 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Jo-Mary Lake is safe to swim in today is a call for the Maine Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Jo-Mary Lake
These are the measurements Maine DEP publishes for Jo-Mary 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 Jo-Mary Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
1,891 acres
Shoreline
15 mi
No bathymetric survey has been published for Jo-Mary Lake, so its depth is not documented here.
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Fishing Jo-Mary Lake
Nearby Lakes in Piscataquis County
Frequently asked questions about Jo-Mary Lake
Where is Jo-Mary Lake?
- Jo-Mary Lake is a lake in Piscataquis County, Maine. Its water-quality measurements are published by Maine DEP and shown on this page as reported.
What is the water quality of Jo-Mary Lake?
- Jo-Mary Lake in Piscataquis County, Maine has water-quality measurements published by Maine DEP, shown here as reported. Surface area: 1891 acres.
Is Jo-Mary Lake 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 Jo-Mary Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.