Lake Colby is a lake in Franklin County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.

Lake Colby

Franklin County, New York310 acresView map Directions

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

Area

310 acres

Surface area

Shoreline

4.2 mi

Measured length

Impaired · Metals (other than mercury)

See the measurements Directions Where to stay

Lake Colby in Franklin County, New York has water-quality measurements published by NY DEC, shown here as reported. Surface area: 310 acres.

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Lake Colby is a 310-acre lake in Franklin 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. Lake Colby is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury). Check local advisories before you swim.

Whether Lake Colby 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.

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Water quality measurements for Lake Colby

These are the measurements NY DEC publishes for Lake Colby, 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 Lake Colby

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

Lake Details

Surface area

310 acres

Shoreline

4.2 mi

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

Stays via Stay22

Stays near Lake Colby

Compare lakeside cabins, hotels, and vacation rentals near Lake Colby in Franklin 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.

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Fishing Lake Colby

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

EPA Impairment Status

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

Causes of impairment

Metals (other than mercury)

Designated uses not supporting: Drinking water.

Source: EPA ATTAINS assessment unit NY1003-0079 · Official waterbody report

Nearby Lakes in Franklin County

Little Colby Pond0.7 miView →Lake Flower2.7 miView →Kiwassa Lake3.3 miView →Lower Saranac Lake3.2 miView →McCauley Pond2.7 miView →Oseetah Lake4.2 miView →

Frequently asked questions about Lake Colby

Where is Lake Colby?: Lake Colby is a lake in Franklin 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 Lake Colby?: Lake Colby in Franklin County, New York has water-quality measurements published by NY DEC, shown here as reported. Surface area: 310 acres.
Is Lake Colby safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Colby is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury). Check local advisories before you swim.