Upper Shepaug Reservoir
Northwest Hills County, Connecticut335 acresView mapDirections
No nutrient or algae sampling on record from CT DEEP for this lake.
Upper Shepaug Reservoir in Northwest Hills County, Connecticut has water-quality measurements published by CT DEEP, shown here as reported. Surface area: 335 acres.
Upper Shepaug Reservoir is a 335-acre lake in Northwest Hills 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 Upper Shepaug 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 Upper Shepaug Reservoir
These are the measurements CT DEEP publishes for Upper Shepaug 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.
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
335 acres
Shoreline
6 mi
No bathymetric survey has been published for Upper Shepaug Reservoir, so its depth is not documented here.
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Frequently asked questions about Upper Shepaug Reservoir
Where is Upper Shepaug Reservoir?
- Upper Shepaug Reservoir is a lake in Northwest Hills County, Connecticut. Its water-quality measurements are published by CT DEEP and shown on this page as reported.
What is the water quality of Upper Shepaug Reservoir?
- Upper Shepaug Reservoir in Northwest Hills County, Connecticut has water-quality measurements published by CT DEEP, shown here as reported. Surface area: 335 acres.
Is Upper Shepaug 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 Upper Shepaug Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.