Saint Clair Lake, Antrim County, MI: Depth Map, Fishing & Water Quality

Today on the lake

Updated 9 Oct 2026, 3:02 am EDT. Get alerts for Saint Clair Lake

WEATHEROvernight: partly cloudy, 43°F, wind SW 5 mph. Friday: sunny, 61°F, wind NW 5 mph.

WARNINGSNo weather or fire warnings in effect.

FIRENo wildfires or prescribed burns reported within 25 miles.

BURNINGCampfires and debris burning: check today's status with Michigan DNR.

ALGAEToo small for satellite monitoring (under 1 km²). No bloom reports on record with Michigan DHHS.

LAUNCHESSt. Clair Lake: listed open. Michigan DNR record updated 3 Apr 2026.

National Weather Service; National Interagency Fire Center; U.S. EPA CyAN satellite; Michigan DHHS; Michigan DNR. Weather, warnings, fires and satellite refresh when you open the page (checked at most hourly).

Depth map

4 contours, 5 to 20 ft

05101520feet

Michigan DNR survey, fetched 7 Oct 2026. Not for navigation.

Size and depth

59 acres · deepest 20 ft (measured) · shoreline about 2.4 mi · clarity about 11 ft

Saint Clair Lake is the 18th largest of the 35 named lakes of 10 acres or more in Antrim County. By Michigan DNR survey it is the 13th deepest of the 26 with a measured depth. Its water is clearer than 23 of the other 32 lakes in the county with satellite clarity readings. Its shoreline measures about 2.4 miles along the state outline. About 52% of its area is deeper than 10 ft.

Ranks against Antrim County lakes in Michigan hydrography, Michigan DNR lake surveys and Michigan EGLE satellite clarity; shoreline measured from the state outline. How we measure

Getting on the water

1 public access site on Saint Clair Lake.

St. Clair Lake · Young State Park · Open

1 ramp lane · 6 trailer spaces · 5 car spaces · vault toilet · accessible restroom · Recreation Passport required

Local boating rules, Antrim County

Michigan DNR boating access, fetched 7 Oct 2026.

Water quality

Average water clarity is about 11 ft (Secchi depth 3.4 m, satellite readings 2018–23).

Clarity 11.2 ft of 20 ft

Michigan EGLE satellite clarity, fetched 7 Oct 2026.

Nearby lakes with measured depth

Ellsworth Lake42 ft deep · 0.7 mi · Antrim County

Lymans Lake17 ft deep · 1.7 mi · Antrim County

Eaton Lake42 ft deep · 1.9 mi · Antrim County

Nelson Lake40 ft deep · 1.9 mi · Antrim County

Moblo Lake13 ft deep · 2.2 mi · Antrim County

Wilson Lake47 ft deep · 2.4 mi · Antrim County

Michigan DNR survey; straight-line miles.

Common questions

How deep is Saint Clair Lake?

Saint Clair Lake is 20 feet at its deepest point, measured by Michigan DNR survey. It covers 59 acres.

Is there a public boat launch on Saint Clair Lake?

Yes. 1 public access site is listed: St. Clair Lake.

How much of Saint Clair Lake is deeper than 10 feet?

About 52% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.