Bertha Lake, Clare County, MI: Depth Map, Fishing & Water Quality

Where it is

7 miles north of Farwell

Clare County, Michigan · 43.9336° N, 84.8935° W

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

Today on the lake

Updated 14 Oct 2026, 6:08 pm EDT. Get alerts for Bertha Lake

WEATHERTonight: partly cloudy, 40°F, wind NE 6 mph. Thursday: mostly cloudy then rain showers likely, 58°F, wind ESE 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.

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

5 contours, 3 to 17 ft

035101517feet

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

Size and depth

36 acres · deepest 17 ft (measured) · shoreline about 1.5 mi · clarity about 12 ft

Bertha Lake is the 40th largest of the 78 named lakes of 10 acres or more in Clare County. By Michigan DNR survey it is the 22nd deepest of the 32 with a measured depth. Its water is clearer than 48 of the other 64 lakes in the county with satellite clarity readings. Its shoreline measures about 1.5 miles along the state outline. About 14% of its area is deeper than 10 ft.

Ranks against Clare 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 Bertha Lake 24 times since 1987. The most recent stocking was 200 largemouth bass on 7 June 2023. Species stocked: black crappie, bluegill, channel catfish, hybrid sunfish, largemouth bass, redear sunfish, yellow perch.

24 stockings, 1987 to 2023, log scale

Latest: 7 Jun 2023: 150 black crappie.

7 Jun 2023STOCKED200 largemouth bass

7 Jun 2023STOCKED200 yellow perch

7 Jun 2023STOCKED150 black crappie

15 May 2020STOCKED200 yellow perch

15 May 2020STOCKED200 black crappie

15 May 2020STOCKED150 largemouth bass

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 12 ft (Secchi depth 3.8 m, satellite readings 2018–23).

Clarity 12.4 ft of 17 ft

Michigan EGLE satellite clarity, fetched 7 Oct 2026.

The area around Bertha Lake

69 other lakes of 10+ acres within about 11 miles of Bertha Lake, 6 with a page here (darker blue). Sources: Michigan DNR, US Census Bureau.

Nearby lakes with measured depth

Perch Lake8 ft deep · 2.0 mi · Clare County

Lake George25 ft deep · 2.7 mi · Clare County

Shingle Lake40 ft deep · 3.5 mi · Clare County

Half Moon Lake20 ft deep · 3.5 mi · Clare County

Silver Lake52 ft deep · 3.7 mi · Clare County

Lily Lake8 ft deep · 4.2 mi · Clare County

Michigan DNR survey; straight-line miles.

Common questions

How deep is Bertha Lake?

Bertha Lake is 17 feet at its deepest point, measured by Michigan DNR survey. It covers 36 acres.

Is Bertha Lake stocked with fish?

Yes. Michigan DNR has stocked it 24 times since 1987, most recently 200 largemouth bass on 7 June 2023.

How much of Bertha Lake is deeper than 10 feet?

About 14% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.