Cranberry Lake
St. Lawrence County, New York6,909 acresView mapDirections
No nutrient or algae sampling on record from NY DEC for this lake.
- Impaired · Mercury
- 31 ft max depth
Cranberry Lake in St. Lawrence County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 31.2 ft. Surface area: 6909 acres.
Cranberry Lake is a 6,909-acre lake in St. Lawrence County, New York with a maximum depth of 31 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC. Methodology: how these readings are compared.
What Cranberry Lake is good for
From access and monitoring records, not editorial picks.
- Deep water31.2 ft surveyed max depth
- Big water6,909 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Cranberry Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Cranberry Lake is safe to swim in today is a call for the New York Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Cranberry Lake
These are the measurements NY DEC publishes for Cranberry 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 Cranberry Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
31.2 ft
Surface area
6,909 acres
Shoreline
71.7 mi
Stays via Stay22
Stays near Cranberry Lake
Compare lakeside cabins, hotels, and vacation rentals near Cranberry Lake in St. Lawrence County, New York — 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 Cranberry Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at New York’s top lakes →
Follow Cranberry Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Cranberry Lake
EPA Impairment Status
Cranberry Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NY0905-0007 · Official waterbody report
Nearby Lakes in St. Lawrence County
Frequently asked questions about Cranberry Lake
Where is Cranberry Lake?
- Cranberry Lake is a lake in St. Lawrence County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.
What is the water quality of Cranberry Lake?
- Cranberry Lake in St. Lawrence County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 31.2 ft. Surface area: 6909 acres.
Is Cranberry Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Cranberry Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Cranberry Lake?
- Cranberry Lake has a maximum depth of 31.2 feet. The lake covers 6909 acres.
Explore Cranberry Lake across LakeQuality
Species activity outlook by water temperature and season
Top lakes and where to stay in the Adirondacks area
Where to stay at New York's top lakes, each with its readings
New York's cleanest lakes, ranked on agency measurements
More lakes in New York
Other Lakes in New York
Where this data comes from
Measurements for Cranberry 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