Where is Mystic Lake?

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

Mystic Lake

Barnstable County, Massachusetts145 acresView map Directions

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

Area

145 acres

Surface area

Impaired · Nuisance exotic species

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Mystic Lake in Barnstable County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 145 acres.

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Mystic Lake is a 145-acre lake in Barnstable 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. Mystic Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nuisance exotic species, oxygen depletion (low DO). Check local advisories before you swim.

Whether Mystic Lake 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 Mystic Lake

These are the measurements MassDEP publishes for Mystic Lake, 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 Mystic Lake

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

Lake Details

Surface area

145 acres

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

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Stays near Mystic Lake

Compare lakeside cabins, hotels, and vacation rentals near Mystic Lake in Barnstable 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.

Top-rated places to stay near Mystic Lake

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Fishing Mystic Lake

→ Mystic Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Mystic Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Nuisance exotic speciesOxygen depletion (low DO)

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit MA96218 · Official waterbody report

Nearby Lakes in Barnstable County

Middle Pond0.4 miView →Hamblin Pond0.8 miView →Shubael PondMesotrophic1.3 miView →Long PondMesotrophic1.7 miView →Lawrence Pond1.9 miView →Triangle Pond2.3 miView →

Frequently asked questions about Mystic Lake

Where is Mystic Lake?: Mystic Lake is a lake in Barnstable County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.
What is the water quality of Mystic Lake?: Mystic Lake in Barnstable County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 145 acres.
Is Mystic Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Mystic Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nuisance exotic species, oxygen depletion (low DO). Check local advisories before you swim.