Grand Lagoon
St. Bernard County, Louisiana75 acresView mapDirections
No nutrient or algae sampling on record from LDEQ for this lake.
Grand Lagoon in St. Bernard County, Louisiana has water-quality measurements published by LDEQ, shown here as reported. Surface area: 75 acres.
Grand Lagoon is a 75-acre lake in St. Bernard County, Louisiana.
Source: EPA Water Quality Portal sampling records, your state environmental agency. 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 Grand Lagoon is safe to swim in today is a call for the Louisiana Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Grand Lagoon
These are the measurements LDEQ publishes for Grand Lagoon, 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.
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
75 acres
No bathymetric survey has been published for Grand Lagoon, so its depth is not documented here.
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Frequently asked questions about Grand Lagoon
Where is Grand Lagoon?
- Grand Lagoon is a lake in St. Bernard County, Louisiana. Its water-quality measurements are published by LDEQ and shown on this page as reported.
What is the water quality of Grand Lagoon?
- Grand Lagoon in St. Bernard County, Louisiana has water-quality measurements published by LDEQ, shown here as reported. Surface area: 75 acres.
Is Grand Lagoon 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 Grand Lagoon come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.