Where is Crystal Lake?

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

Crystal Lake

Middlesex County, Massachusetts27 acresView map Directions

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

Area

27 acres

Surface area

Shoreline

0.8 mi

Measured length

Impaired · Algal growth

See the measurements Directions Where to stay

Crystal Lake in Middlesex County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 27 acres.

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Crystal Lake is a 27-acre lake in Middlesex County, Massachusetts.

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

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Crystal Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.

Whether Crystal 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 Crystal Lake

These are the measurements MassDEP publishes for Crystal 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.

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

Lake Details

Surface area

27 acres

Shoreline

0.8 mi

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

Stays via Stay22

Stays near Crystal Lake

Compare lakeside cabins, hotels, and vacation rentals near Crystal Lake 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.

Top-rated places to stay near Crystal Lake

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Fishing Crystal Lake

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

EPA Impairment Status

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

Causes of impairment

Algal growth

Designated uses not supporting: Aquatic life, Recreation, Other.

Source: EPA ATTAINS assessment unit MA72030 · Official waterbody report

Nearby Lakes in Middlesex County

Fresh Pond4.7 miView →Hardys Pond6 miView →Weston Reservoir4.7 miView →Spy Pond5 ft clear—View →Norumbega Reservoir4.8 miView →Cambridge ReservoirEutrophic—View →

Frequently asked questions about Crystal Lake

Where is Crystal Lake?: Crystal Lake 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 Crystal Lake?: Crystal Lake in Middlesex County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 27 acres.
Is Crystal Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Crystal Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.