Knops Pond is a lake in Middlesex County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.

Knops Pond

Middlesex County, Massachusetts64 acresView map Directions

No nutrient or algae sampling on record from MassDEP for this lake.

Area

64 acres

Surface area

Impaired · Algal growth

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Knops Pond in Middlesex County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 64 acres.

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Knops Pond is a 64-acre lake in Middlesex County, Massachusetts.

Source: EPA Water Quality Portal sampling records, MassDEP. Methodology: how these readings are compared.

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Knops Pond is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, mercury, nuisance exotic species. Check local advisories before you swim.

Whether Knops Pond 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.

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Water quality measurements for Knops Pond

These are the measurements MassDEP publishes for Knops Pond, 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 Knops Pond

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

64 acres

No bathymetric survey has been published for Knops Pond, so its depth is not documented here.

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Stays near Knops Pond

Compare lakeside cabins, hotels, and vacation rentals near Knops Pond in Middlesex County, Massachusetts — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Knops Pond

→ Knops Pond fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Knops Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).

Causes of impairment

Algal growthMercuryNuisance exotic species

Designated uses not supporting: Aquatic life, Fish consumption.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MA84084 · Official waterbody report

Nearby Lakes in Middlesex County

Lost Lake0.5 miView →Whitney Pond1.2 miView →Spectacle Pond1.8 miView →Long Pond1.8 miView →Baddacook Pond2.2 miView →Forge Pond1.8 miView →

Frequently asked questions about Knops Pond

Where is Knops Pond?: Knops Pond is a lake in Middlesex County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.
What is the water quality of Knops Pond?: Knops Pond in Middlesex County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 64 acres.
Is Knops Pond safe to swim in?: Nutrient and algae readings are not a swimming clearance. Knops Pond is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, mercury, nuisance exotic species. Check local advisories before you swim.