Cass County · Michigan

Fish Lake

Soundings in feet · 334 acres · deepest 40 ft

Today on the lake

Updated 9 Oct 2026, 3:34 am EDT. Get alerts for Fish Lake

WEATHEROvernight: mostly clear, 43°F, wind 0 mph. Friday: partly sunny, 70°F, wind S 0 to 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.

ALGAECAUTION Satellite detected cyanobacteria across about 20% of the lake on 6 Oct 2026, the latest clear-sky image.

LAUNCHESFish 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

5 contours, 5 to 40 ft

0510203040feet

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

Size and depth

334 acres · deepest 40 ft (measured) · shoreline about 4.6 mi · clarity about 11 ft

Fish Lake is the 6th largest of the 98 named lakes of 10 acres or more in Cass County. By Michigan DNR survey it is the 20th deepest of the 31 with a measured depth. Its water is clearer than 43 of the other 76 lakes in the county with satellite clarity readings. Its shoreline measures about 4.6 miles along the state outline. About 50% of its area is deeper than 20 ft.

Ranks against Cass 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 Fish Lake.

Fish Lake · Cassopolis Field Office · Open

1 ramp lane · 12 trailer spaces · vault toilet · accessible restroom · Recreation Passport required

Local boating rules, Cass County

Michigan DNR boating access, fetched 7 Oct 2026.

Fishing

Michigan DNR has stocked Fish Lake 18 times since 1993. The most recent stocking was 2,014 walleye on 30 October 2025. Species stocked: walleye.

18 stockings, 1993 to 2025, log scale

Latest: 30 Oct 2025: 2,014 walleye.

30 Oct 2025STOCKED2,014 walleye

3 Oct 2023STOCKED1,359 walleye

26 May 2021STOCKED17,835 walleye

12 Oct 2017STOCKED277 walleye

12 Oct 2017STOCKED160 walleye

11 Oct 2017STOCKED395 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

Water quality

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

Clarity 10.8 ft of 40 ft

Michigan EGLE satellite clarity, fetched 7 Oct 2026.

Email me about Fish LakeWhen it is stockedMichigan DNR has stocked Fish Lake 18 times since 1993, most recently 2,014 walleye on 30 October 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. In 2026 that happened on 28 Sep.Any lake in Cass CountyStockings and algae records on every lake in the county. In 2026 so far: 6 emails.

In 2026 so far, these alerts would have sent you 1 email about Fish Lake: 28 Sep.

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

Saddlebag Lake35 ft deep · 0.7 mi · Cass County

Finch Lake36 ft deep · 1.0 mi · Cass County

Bunker Lake58 ft deep · 2.2 mi · Cass County

Hemlock Lake70 ft deep · 2.9 mi · Cass County

Huyck Lake38 ft deep · 3.0 mi · Cass County

Cedar Lake84 ft deep · 3.1 mi · Van Buren County

Michigan DNR survey; straight-line miles.

Common questions

How deep is Fish Lake?

Fish Lake is 40 feet at its deepest point, measured by Michigan DNR survey. It covers 334 acres.

Is there a public boat launch on Fish Lake?

Yes. 1 public access site is listed: Fish Lake.

Is Fish Lake stocked with fish?

Yes. Michigan DNR has stocked it 18 times since 1993, most recently 2,014 walleye on 30 October 2025.

How much of Fish Lake is deeper than 10 feet?

About 68% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.