Fennessy Lake, Ottawa County, MI: Depth Map, Fishing & Water Quality

Where it is

3 miles southwest of Walker

Ottawa County, Michigan · 42.9517° N, 85.7883° W

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The Michigan DNR lists no public access site on Fennessy Lake; much of the shore may be private.

Today on the lake

Updated 10 Oct 2026, 12:27 am EDT. Get alerts for Fennessy Lake

WEATHEROvernight: chance rain showers, 56°F, wind ESE 8 mph. Saturday: partly sunny, 77°F, wind SSE 8 to 12 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.

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

2 contours, 5 to 10 ft

0510feet

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

Size and depth

62 acres · deepest 10 ft (measured) · shoreline about 1.3 mi · clarity about 7 ft

Fennessy Lake is the 11th largest of the 20 named lakes of 10 acres or more in Ottawa County. By Michigan DNR survey it is the 4th deepest of the 4 with a measured depth. Its water is clearer than 11 of the other 14 lakes in the county with satellite clarity readings. Its shoreline measures about 1.3 miles along the state outline. About 35% of its area is deeper than 5 ft.

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

Fishing

Michigan DNR has stocked Fennessy Lake 5 times since 1983. The most recent stocking was 240 largemouth bass on 10 May 1984. Species stocked: bluegill, largemouth bass, walleye.

5 stockings, 1983 to 1984, log scale

Latest: 10 May 1984: 240 largemouth bass.

10 May 1984STOCKED240 largemouth bass

21 Sep 1983STOCKED820 largemouth bass

28 Jun 1983STOCKED965 bluegill

20 Apr 1983STOCKED450,000 walleye

20 Apr 1983STOCKED150,000 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 1954: black bullhead, blackchin shiner, bluegill, bluntnose minnow, central mudminnow, common shiner, golden shiner, grass pickerel, largemouth bass, mimic shiner, pumpkinseed, sand shiner. Historic records, not a current survey.

Michigan Fish Atlas.

Water quality

Average water clarity is about 7 ft (Secchi depth 2.0 m, satellite readings 2018–23).

Clarity 6.7 ft of 10 ft

Michigan EGLE satellite clarity, fetched 7 Oct 2026.

The area around Fennessy Lake

21 other lakes of 10+ acres within about 6 miles of Fennessy Lake. Sources: Michigan DNR, US Census Bureau.

Nearby lakes with measured depth

Reeds Lake40 ft deep · 9.1 mi · Kent County

Lamberton Lake20 ft deep · 9.4 mi · Kent County

Little Pine Island Lak63 ft deep · 11.6 mi · Kent County

Mead Lake68 ft deep · 11.8 mi · Kent County

Freska Lake30 ft deep · 13.2 mi · Kent County

Crockery Lake54 ft deep · 15.1 mi · Ottawa County

Michigan DNR survey; straight-line miles.

Common questions

How deep is Fennessy Lake?

Fennessy Lake is 10 feet at its deepest point, measured by Michigan DNR survey. It covers 62 acres.

Is Fennessy Lake stocked with fish?

Yes. Michigan DNR has stocked it 5 times since 1983, most recently 240 largemouth bass on 10 May 1984.

How much of Fennessy Lake is deeper than 10 feet?

About 0% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.