Where is Flannagan Pond?

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

Flannagan Pond

Middlesex County, Massachusetts80 acresView map Directions

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

Area

80 acres

Surface area

Shoreline

2.7 mi

Measured length

Impaired · Algal growth

See the measurements Directions Where to stay

Flannagan Pond in Middlesex County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 80 acres.

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Flannagan Pond is a 80-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. Flannagan Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for algal growth, nuisance exotic species. Check local advisories before you swim.

Whether Flannagan 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 Flannagan Pond

These are the measurements MassDEP publishes for Flannagan 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 Flannagan Pond

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

Lake Details

Surface area

80 acres

Shoreline

2.7 mi

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

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Stays near Flannagan Pond

Compare lakeside cabins, hotels, and vacation rentals near Flannagan 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 Flannagan Pond

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

EPA Impairment Status

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

Causes of impairment

Algal growthNuisance exotic species

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit MA81044 · Official waterbody report

Nearby Lakes in Middlesex County

Sandy Pond0.4 miView →Long Pond1.1 miView →Grove Pond1.1 miView →Plow Shop Pond1.5 miView →Spectacle Pond2.4 miView →Lost Lake3.1 miView →

Frequently asked questions about Flannagan Pond

Where is Flannagan Pond?: Flannagan 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 Flannagan Pond?: Flannagan Pond in Middlesex County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 80 acres.
Is Flannagan Pond safe to swim in?: Nutrient and algae readings are not a swimming clearance. Flannagan Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for algal growth, nuisance exotic species. Check local advisories before you swim.