Where is Millecoquins Lake?

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

How deep is Millecoquins Lake?

Millecoquins Lake has a maximum depth of 12 feet and an average depth of 10 feet. The lake covers 1124.1 acres.

Are there boat ramps on Millecoquins Lake?

Millecoquins Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Road. Public access is listed as yes.

Can I fish at Millecoquins Lake?

Millecoquins Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Michigan's fish and wildlife agency, so check its current regulations before you go.

Millecoquins Lake

Mackinac County, Michigan1,124 acresView map Directions

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

Max depth

12 ft

Bathymetric survey

Area

1,124 acres

Surface area

Shoreline

1.1 mi

Measured length

Impaired · Mercury
12 ft max depth
Public access

See the measurements Directions Where to stay

Millecoquins Lake in Mackinac County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 12 ft. Surface area: 1124.1 acres.

Loading map…

Water clarity at Millecoquins Lake

Moderate clarity. Across summers from 2018 to 2023, Millecoquins Lake averaged 2.65 m (9 ft) of visibility down into the water, so visibility is middling in midsummer, which is ordinary for a productive inland lake. 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 5.62 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.

Millecoquins Lake is a 1,124-acre lake in Mackinac County, Michigan with a maximum depth of 12 feet (10-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Millecoquins Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Big water1,124 acres

Swimming conditions

No reading

Not rated

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

Whether Millecoquins 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.

Compare swimming lakes near Traverse City →

Get alerts for Millecoquins Lake →

Water quality measurements for Millecoquins Lake

These are the measurements EGLE publishes for Millecoquins 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 Millecoquins Lake

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

Lake Details

Max depth

12 ft

Average depth

10 ft

Surface area

1,124 acres

Shoreline

1.1 mi

Public access

Yes

Listed by EGLE

Recreation & Access

Boat Landings

Yes

Public Access

Lake RoadPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Millecoquins Lake

Compare lakeside cabins, hotels, and vacation rentals near Millecoquins Lake in Mackinac 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 Millecoquins Lake

Prices for Oct 9–11, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a whole trip? See where to stay at Michigan’s top lakes →

Follow Millecoquins Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Millecoquins Lake

→ Millecoquins Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Millecoquins 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 MI040601070204-05 · Official waterbody report

Nearby Lakes in Mackinac County

Dollar Lake5.4 miView →Dollar Lake5.5 miView →Cranberry Lake6.3 miView →Pullup Lake7.3 miView →Tee Lake7.8 miView →Nelson Lake8.2 miView →

Frequently asked questions about Millecoquins Lake

Where is Millecoquins Lake?: Millecoquins Lake is a lake in Mackinac County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Millecoquins Lake?: Millecoquins Lake in Mackinac County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 12 ft. Surface area: 1124.1 acres.
Is Millecoquins Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Millecoquins Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Millecoquins Lake?: Millecoquins Lake has a maximum depth of 12 feet and an average depth of 10 feet. The lake covers 1124.1 acres.
Are there boat ramps on Millecoquins Lake?: Millecoquins Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Road. Public access is listed as yes.
Can I fish at Millecoquins Lake?: Millecoquins Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Michigan's fish and wildlife agency, so check its current regulations before you go.