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LakeQuality

Sixmile Lake

Ontonagon County, Michigan82 acresView mapDirections

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

Max depth
37 ft
Bathymetric survey
Area
82 acres
Surface area
Shoreline
0.7 mi
Measured length
  • Impaired · Mercury
  • 37 ft max depth

Sixmile Lake in Ontonagon County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 37 ft. Surface area: 81.7 acres.

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Water clarity at Sixmile Lake

Moderate clarity. Across summers from 2018 to 2023, Sixmile Lake averaged 2.05 m (7 ft) of visibility down into the water, so visibility is middling in midsummer, which is ordinary for a productive inland lake.

Nobody has taken a water sample here that we can find. Michigan's environmental agency measures clarity on lakes like this one from satellite images instead, which is why this page reports how clear the water is and no phosphorus or algae readings.

Clear is not the same as clean. A lake can be easy to see through and still carry high nutrient levels, and a naturally tea-stained lake can be perfectly healthy. The nutrient and algae readings on other lakes come from phosphorus and chlorophyll-a measured in a laboratory, and clarity alone cannot stand in for them.

The same satellite images put summer algae here at roughly 4.94 micrograms per litre. Estimating algae from orbit is far less exact than measuring clarity, so that figure is worth knowing and is not part of any rating.

Sixmile Lake is a 82-acre lake in Ontonagon County, Michigan with a maximum depth of 37 feet (15-foot average).

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

What Sixmile Lake is good for

From access and monitoring records, not editorial picks.

  • Deep water37 ft surveyed max depth

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Sixmile Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.

Whether Sixmile Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Sixmile Lake

These are the measurements EGLE publishes for Sixmile 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 Sixmile Lake

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

Lake Details

Max depth

37 ft

Average depth

15 ft

Surface area

82 acres

Shoreline

0.7 mi

Stays via Stay22

Stays near Sixmile Lake

Compare lakeside cabins, hotels, and vacation rentals near Sixmile Lake in Ontonagon County, Michigan — 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 Sixmile Lake

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Follow Sixmile Lake’s readings

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Fishing Sixmile Lake

EPA Impairment Status

Sixmile Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MI040201040207-06 · Official waterbody report

Nearby Lakes in Ontonagon County

Frequently asked questions about Sixmile Lake

Where is Sixmile Lake?

Sixmile Lake is a lake in Ontonagon County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.

What is the water quality of Sixmile Lake?

Sixmile Lake in Ontonagon County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 37 ft. Surface area: 81.7 acres.

Measurements on this page ↑

Is Sixmile Lake safe to swim in?

Nutrient and algae readings are not a swimming clearance. Sixmile Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.

Swimming on this page ↑

How deep is Sixmile Lake?

Sixmile Lake has a maximum depth of 37 feet and an average depth of 15 feet. The lake covers 81.7 acres.

Where this data comes from

Measurements for Sixmile 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