Crystal Lake
Barnstable County, Massachusetts33 acresView mapDirections
No nutrient or algae sampling on record from MassDEP for this lake.
- Impaired · Oxygen depletion (low DO)
- 44 ft max depth
Crystal Lake in Barnstable County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Maximum depth: 44 ft. Surface area: 33 acres.
Crystal Lake is a 33-acre lake in Barnstable County, Massachusetts with a maximum depth of 44 feet (21-foot average).
Source: EPA Water Quality Portal sampling records, MassDEP. Methodology: how these readings are compared.
What Crystal Lake is good for
From access and monitoring records, not editorial picks.
- Deep water44 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Crystal Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). 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.
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.
Ask about Crystal Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
44 ft
Average depth
21 ft
Surface area
33 acres
Shoreline
1 mi
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Stays near Crystal Lake
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Fishing Crystal Lake
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
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit MA96050 · Official waterbody report
Nearby Lakes in Barnstable County
Frequently asked questions about Crystal Lake
Where is Crystal Lake?
- Crystal 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 Crystal Lake?
- Crystal Lake in Barnstable County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Maximum depth: 44 ft. Surface area: 33 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 oxygen depletion (low DO). Check local advisories before you swim.
How deep is Crystal Lake?
- Crystal Lake has a maximum depth of 44 feet and an average depth of 21 feet. The lake covers 33 acres.
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Where this data comes from
Measurements for Crystal Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database