Number Four Reservoir
Worcester County, Massachusetts67 acresView mapDirections
No nutrient or algae sampling on record from MassDEP for this lake.
Number Four Reservoir in Worcester County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 67 acres.
Number Four Reservoir is a 67-acre lake in Worcester County, Massachusetts.
Source: EPA Water Quality Portal sampling records, MassDEP. 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 Number Four Reservoir is safe to swim in today is a call for the Massachusetts Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Number Four Reservoir
These are the measurements MassDEP publishes for Number Four 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 Number Four Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
67 acres
Shoreline
2.1 mi
No bathymetric survey has been published for Number Four Reservoir, so its depth is not documented here.
Stays via Stay22
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Frequently asked questions about Number Four Reservoir
Where is Number Four Reservoir?
- Number Four Reservoir is a lake in Worcester County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.
What is the water quality of Number Four Reservoir?
- Number Four Reservoir in Worcester County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 67 acres.
Is Number Four 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 Number Four Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.