Mad Island Lake
Matagorda County, Texas862 acresView mapDirections
No nutrient or algae sampling on record from TCEQ for this lake.
Mad Island Lake in Matagorda County, Texas has water-quality measurements published by TCEQ, shown here as reported. Surface area: 862 acres.
Mad Island Lake is a 862-acre lake in Matagorda County, Texas.
Source: EPA Water Quality Portal sampling records, TCEQ. 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 Mad Island Lake is safe to swim in today is a call for the Texas Commission on Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Mad Island Lake
These are the measurements TCEQ publishes for Mad Island 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 Mad Island Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
862 acres
Shoreline
20 mi
No bathymetric survey has been published for Mad Island Lake, so its depth is not documented here.
Stays via Stay22
Stays near Mad Island Lake
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Frequently asked questions about Mad Island Lake
Where is Mad Island Lake?
- Mad Island Lake is a lake in Matagorda County, Texas. Its water-quality measurements are published by TCEQ and shown on this page as reported.
What is the water quality of Mad Island Lake?
- Mad Island Lake in Matagorda County, Texas has water-quality measurements published by TCEQ, shown here as reported. Surface area: 862 acres.
Is Mad Island 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 Mad Island Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.