Mud 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.

Mud Lake

St. Lawrence County, New York44 acresView map Directions

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

Area

44 acres

Surface area

Shoreline

2 mi

Measured length

Impaired · Oxygen depletion (low DO)

See the measurements Directions Where to stay

Mud Lake in St. Lawrence County, New York has water-quality measurements published by NY DEC, shown here as reported. Surface area: 44 acres.

Loading map…

Mud Lake is a 44-acre lake in St. Lawrence County, New York.

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

Swimming conditions

No reading

Not rated

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

Whether Mud 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.

Compare swimming lakes near Syracuse →

Get alerts for Mud Lake →

Water quality measurements for Mud Lake

These are the measurements NY DEC publishes for Mud 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 Mud Lake

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

Lake Details

Surface area

44 acres

Shoreline

2 mi

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

Stays via Stay22

Stays near Mud Lake

Compare lakeside cabins, hotels, and vacation rentals near Mud 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 Mud 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 Mud Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Mud Lake

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

EPA Impairment Status

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

Causes of impairment

Oxygen depletion (low DO)

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit NY0906-0036 · Official waterbody report

Nearby Lakes in St. Lawrence County

Pleasant Lake1.3 miView →Yellow Lake2.9 miView →Grass Lake5.9 miView →Hickory Lake8.3 miView →Black Lake—View →Mud Lake—View →

Frequently asked questions about Mud Lake

Where is Mud Lake?: Mud 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 Mud Lake?: Mud Lake in St. Lawrence County, New York has water-quality measurements published by NY DEC, shown here as reported. Surface area: 44 acres.
Is Mud Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Mud Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.