Threemile Pond
Kennebec County, Maine1,175 acresView mapDirections
No nutrient or algae sampling on record from Maine DEP for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 37 ft max depth
Threemile Pond in Kennebec County, Maine has water-quality measurements published by Maine DEP, shown here as reported. Maximum depth: 37 ft. Surface area: 1175 acres.
Threemile Pond is a 1,175-acre lake in Kennebec County, Maine with a maximum depth of 37 feet (17-foot average).
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Threemile Pond is good for
From access and monitoring records, not editorial picks.
- Deep water37 ft surveyed max depth
- Big water1,175 acres
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Threemile Pond is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen), turbidity. Check local advisories before you swim.
Whether Threemile Pond is safe to swim in today is a call for the Maine Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Threemile Pond
These are the measurements Maine DEP publishes for Threemile Pond, 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 Threemile Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
37 ft
Average depth
17 ft
Surface area
1,175 acres
Shoreline
9.4 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Fishing Threemile Pond
EPA Impairment Status
Threemile Pond is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit ME0103000312_5416L · Official waterbody report
Nearby Lakes in Kennebec County
Frequently asked questions about Threemile Pond
Where is Threemile Pond?
- Threemile Pond is a lake in Kennebec County, Maine. Its water-quality measurements are published by Maine DEP and shown on this page as reported.
What is the water quality of Threemile Pond?
- Threemile Pond in Kennebec County, Maine has water-quality measurements published by Maine DEP, shown here as reported. Maximum depth: 37 ft. Surface area: 1175 acres.
Is Threemile Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Threemile Pond is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen), turbidity. Check local advisories before you swim.
How deep is Threemile Pond?
- Threemile Pond has a maximum depth of 37 feet and an average depth of 17 feet. The lake covers 1175 acres.
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Where this data comes from
Measurements for Threemile Pond 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