Maple Lake
Polk County, Minnesota1,582 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Mercury
- 14 ft max depth
Maple Lake in Polk County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 14 ft. Surface area: 1582 acres.
Maple Lake is a 1,582-acre lake in Polk County, Minnesota with a maximum depth of 14 feet.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder. Methodology: how these readings are compared.
What Maple Lake is good for
From access and monitoring records, not editorial picks.
- Big water1,582 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Maple Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Maple Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Maple Lake
These are the measurements Minnesota PCA publishes for Maple 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 Maple Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
14 ft
Surface area
1,582 acres
Shoreline
19.4 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Stays near Maple Lake
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Fishing Maple Lake
EPA Impairment Status
Maple Lake 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: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN60-0305-00 · Official waterbody report
Nearby Lakes in Polk County
Frequently asked questions about Maple Lake
Where is Maple Lake?
- Maple Lake is a lake in Polk County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Maple Lake?
- Maple Lake in Polk County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 14 ft. Surface area: 1582 acres.
Is Maple Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Maple Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Maple Lake?
- Maple Lake has a maximum depth of 14 feet. The lake covers 1582 acres.
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Where this data comes from
Measurements for Maple 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
Lake details from Minnesota DNR LakeFinder