Sixteenmile Lake
Alger County, Michigan449 acresView mapDirections
No nutrient or algae sampling on record from EGLE for this lake.
- Impaired · Mercury
- 26 ft max depth
Sixteenmile Lake in Alger County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 26 ft. Surface area: 449.4 acres.
Water clarity at Sixteenmile Lake
Murky water. Across summers from 2018 to 2023, Sixteenmile Lake averaged 1.5 m (5 ft) of visibility down into the water, so you cannot see far below the surface in midsummer. This lake sits close to the line between clarity classes, so treat the label as approximate and the depth reading as the real number.
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 15.79 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.
Sixteenmile Lake is a 449-acre lake in Alger County, Michigan with a maximum depth of 26 feet (12-foot average).
Source: EPA Water Quality Portal sampling records, EGLE. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Sixteenmile Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Sixteenmile 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.
Water quality measurements for Sixteenmile Lake
These are the measurements EGLE publishes for Sixteenmile 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 Sixteenmile Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
26 ft
Average depth
12 ft
Surface area
449 acres
Shoreline
1.7 mi
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Fishing Sixteenmile Lake
EPA Impairment Status
Sixteenmile 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 MI040301120202-04 · Official waterbody report
Nearby Lakes in Alger County
Frequently asked questions about Sixteenmile Lake
Where is Sixteenmile Lake?
- Sixteenmile Lake is a lake in Alger County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Sixteenmile Lake?
- Sixteenmile Lake in Alger County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 26 ft. Surface area: 449.4 acres.
Is Sixteenmile Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Sixteenmile Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Sixteenmile Lake?
- Sixteenmile Lake has a maximum depth of 26 feet and an average depth of 12 feet. The lake covers 449.4 acres.
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Where this data comes from
Measurements for Sixteenmile 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