Old Reservoir
Brazoria County, Texas157 acresView mapDirections
No nutrient or algae sampling on record from TCEQ for this lake.
Old Reservoir in Brazoria County, Texas has water-quality measurements published by TCEQ, shown here as reported. Surface area: 157 acres.
Old Reservoir is a 157-acre lake in Brazoria 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 Old Reservoir 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 Old Reservoir
These are the measurements TCEQ publishes for Old Reservoir, 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 Old Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
157 acres
Shoreline
5.4 mi
No bathymetric survey has been published for Old Reservoir, so its depth is not documented here.
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Frequently asked questions about Old Reservoir
Where is Old Reservoir?
- Old Reservoir is a lake in Brazoria County, Texas. Its water-quality measurements are published by TCEQ and shown on this page as reported.
What is the water quality of Old Reservoir?
- Old Reservoir in Brazoria County, Texas has water-quality measurements published by TCEQ, shown here as reported. Surface area: 157 acres.
Is Old Reservoir 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 Old Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.