Great Brook Reservoir
Naugatuck Valley County, Connecticut55 acresView mapDirections
No nutrient or algae sampling on record from CT DEEP for this lake.
Great Brook Reservoir in Naugatuck Valley County, Connecticut has water-quality measurements published by CT DEEP, shown here as reported. Surface area: 55 acres.
Great Brook Reservoir is a 55-acre lake in Naugatuck Valley County, Connecticut.
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 Great Brook Reservoir is safe to swim in today is a call for the Connecticut Department of Energy and Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Great Brook Reservoir
These are the measurements CT DEEP publishes for Great Brook 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 Great Brook Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
55 acres
Shoreline
1.6 mi
No bathymetric survey has been published for Great Brook Reservoir, so its depth is not documented here.
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Fishing Great Brook Reservoir
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Frequently asked questions about Great Brook Reservoir
Where is Great Brook Reservoir?
- Great Brook Reservoir is a lake in Naugatuck Valley County, Connecticut. Its water-quality measurements are published by CT DEEP and shown on this page as reported.
What is the water quality of Great Brook Reservoir?
- Great Brook Reservoir in Naugatuck Valley County, Connecticut has water-quality measurements published by CT DEEP, shown here as reported. Surface area: 55 acres.
Is Great Brook 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 Great Brook Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.