Oakland County · Michigan

Cass Lake

Soundings in feet · 1,279 acres · deepest 123 ft

Today on the lake

Updated 9 Oct 2026, 3:24 am EDT. Get alerts for Cass Lake

WEATHEROvernight: clear, 43°F, wind W 5 mph. Friday: sunny, 68°F, wind WSW 3 to 7 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.

ALGAECAUTION Satellite detected cyanobacteria across about 8% of the lake on 5 Oct 2026, the latest clear-sky image.

LAUNCHESDodge #4 State Park - Cass 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

25 contours, 4 to 123 ft

0451020283040505357606469707377809098100105110117120123feet

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

Size and depth

1,279 acres · deepest 123 ft (measured) · shoreline about 25.0 mi · clarity about 11 ft

Cass Lake is the largest of the 290 named lakes of 10 acres or more in Oakland County. By Michigan DNR survey it is the deepest of the 104 with a measured depth. Its water is clearer than 149 of the other 248 lakes in the county with satellite clarity readings. Its shoreline measures about 25.0 miles along the state outline. About 11% of its area is deeper than 69 ft.

Ranks against Oakland 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 Cass Lake.

Dodge #4 State Park - Cass Lake · Dodge 4 State Park · Open

4 ramp lanes · 85 trailer spaces · 10 car spaces · vault toilet · accessible restroom · Recreation Passport required

Local boating rules, Oakland County

Michigan DNR boating access, fetched 7 Oct 2026.

Fishing

Michigan DNR has stocked Cass Lake 87 times since 1979. The most recent stocking was 29,769 walleye on 26 June 2025. Species stocked: brown trout, lake trout, northern pike, rainbow trout, redear sunfish, splake, walleye.

87 stockings, 1979 to 2025, log scale

Latest: 26 Jun 2025: 29,769 walleye.

26 Jun 2025STOCKED29,769 walleye

25 Jun 2025STOCKED41,865 walleye

6 Jun 2025STOCKED3,979 walleye

6 Jun 2025STOCKED5,846 walleye

27 Jun 2023STOCKED63,394 walleye

28 Jun 2022STOCKED98,102 walleye

Source: Michigan DNR Fisheries, fetched 7 Oct 2026. How we measure

Where the deep water is

Show water deeper than

Measured from Michigan DNR contours. How we measure

Historically recorded species, from records through 1992: brook silverside, lake herring, yellow perch. Historic records, not a current survey.

Michigan Fish Atlas.

Water quality

Average water clarity is about 11 ft (Secchi depth 3.3 m, satellite readings 2018–23).

Clarity 10.8 ft of 123 ft

Michigan EGLE satellite clarity, fetched 7 Oct 2026.

Email me about Cass LakeWhen it is stockedMichigan DNR has stocked Cass Lake 87 times since 1979, most recently 29,769 walleye on 26 June 2025. None so far in 2026.When algae is reported or testedMichigan DHHS has no records for this lake yet. We email when the first one is posted.When satellite sees a bloom startEPA satellite, checked daily, June to October. We email when a bloom first shows on two clear days, not every day it stays. It has not happened in 2026.Any lake in Oakland CountyStockings and algae records on every lake in the county. In 2026 so far: 20 emails.

Cass Lake has had no stockings or algae records in 2026, so its own alerts would have sent nothing this year. The county alert is on by default.

Email address

At most one email a week per lake. We email you a link to confirm before any alert is sent; every email has a one-click unsubscribe.

Nearby lakes with measured depth

Elizabeth Lake72 ft deep · 1.5 mi · Oakland County

Otter Lake70 ft deep · 1.6 mi · Oakland County

Orchard Lake111 ft deep · 2.1 mi · Oakland County

Geneva Lake35 ft deep · 2.2 mi · Oakland County

Pine Lake90 ft deep · 2.2 mi · Oakland County

Crescent Lake40 ft deep · 2.2 mi · Oakland County

Michigan DNR survey; straight-line miles.

Common questions

How deep is Cass Lake?

Cass Lake is 123 feet at its deepest point, measured by Michigan DNR survey. It covers 1,279 acres.

Is there a public boat launch on Cass Lake?

Yes. 1 public access site is listed: Dodge #4 State Park - Cass Lake.

Is Cass Lake stocked with fish?

Yes. Michigan DNR has stocked it 87 times since 1979, most recently 29,769 walleye on 26 June 2025.

How much of Cass Lake is deeper than 10 feet?

About 98% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.