Big Moose Lake
Herkimer County, New York1,233 acresView mapDirections
No nutrient or algae sampling on record from NY DEC for this lake.
- Impaired · Mercury
- 80 ft max depth
Big Moose Lake in Herkimer County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 80.4 ft. Surface area: 1233 acres.
Big Moose Lake is a 1,233-acre lake in Herkimer County, New York with a maximum depth of 80 feet (22-foot average).
Source: EPA Water Quality Portal sampling records, NYSDEC. Methodology: how these readings are compared.
What Big Moose Lake is good for
From access and monitoring records, not editorial picks.
- Deep water80.4 ft surveyed max depth
- Big water1,233 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Big Moose Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.
Whether Big Moose 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 Big Moose Lake
These are the measurements NY DEC publishes for Big Moose 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 Big Moose Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
80.4 ft
Average depth
22.3 ft
Surface area
1,233 acres
Shoreline
17.5 mi
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Fishing Big Moose Lake
EPA Impairment Status
Big Moose 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.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NY0801-0035 · Official waterbody report
Nearby Lakes in Herkimer County
Frequently asked questions about Big Moose Lake
Where is Big Moose Lake?
- Big Moose Lake is a lake in Herkimer 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 Big Moose Lake?
- Big Moose Lake in Herkimer County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 80.4 ft. Surface area: 1233 acres.
Is Big Moose Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Big Moose Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.
How deep is Big Moose Lake?
- Big Moose Lake has a maximum depth of 80.4 feet and an average depth of 22.3 feet. The lake covers 1233 acres.
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Where this data comes from
Measurements for Big Moose 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