Hemlock Lake, Hillsdale County, MI: Depth Map, Fishing & Water Quality

Where it is

4 miles south of Allen

Hillsdale County, Michigan · 41.8963° N, 84.7930° W

Directions to Hemlock Lake Apple Maps

Directions open in Google or Apple Maps, to the Michigan DNR public access site.

Today on the lake

Updated 10 Oct 2026, 1:17 am EDT. Get alerts for Hemlock Lake

WEATHEROvernight: mostly cloudy, 55°F, wind SE 5 to 10 mph. Saturday: partly sunny, 76°F, wind SE 10 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.

LAUNCHESHemlock 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

7 contours, 5 to 60 ft

05102030405060feet

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

Size and depth

150 acres · deepest 60 ft (measured) · shoreline about 3.0 mi · clarity about 8 ft

Hemlock Lake is the 8th largest of the 51 named lakes of 10 acres or more in Hillsdale County. By Michigan DNR survey it is the 3rd deepest of the 11 with a measured depth. Its water is clearer than 8 of the other 33 lakes in the county with satellite clarity readings. Its shoreline measures about 3.0 miles along the state outline. About 59% of its area is deeper than 30 ft.

Ranks against Hillsdale 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 Hemlock Lake.

Hemlock Lake · Open

1 ramp lane · 8 trailer spaces · 2 car spaces · vault toilet · accessible restroom · Recreation Passport required

Local boating rules, Hillsdale County

Michigan DNR boating access, fetched 7 Oct 2026.

Fishing

Michigan DNR has stocked Hemlock Lake 30 times since 1984. The most recent stocking was 500 yellow perch on 3 May 2026. Species stocked: rainbow trout, redear sunfish, walleye, yellow perch.

30 stockings, 1984 to 2026, log scale

Latest: 3 May 2026: 500 yellow perch.

3 May 2026STOCKED500 yellow perch

25 Mar 2023STOCKED750 yellow perch

28 Oct 2019STOCKED500 walleye

3 Nov 2016STOCKED500 walleye

1 Nov 2013STOCKED500 walleye

28 Oct 2010STOCKED500 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 8 ft (Secchi depth 2.6 m, satellite readings 2018–23).

Clarity 8.4 ft of 60 ft

Michigan EGLE satellite clarity, fetched 7 Oct 2026.

The area around Hemlock Lake

27 other lakes of 10+ acres within about 7 miles of Hemlock Lake, 1 with a page here (darker blue); 1 public launch in magenta. Sources: Michigan DNR, US Census Bureau.

Nearby lakes with measured depth

SHARP40 ft deep · 0.6 mi · Hillsdale County

Round Lake30 ft deep · 1.2 mi · Hillsdale County

South Sand Lake32 ft deep · 5.2 mi · Hillsdale County

Middle Sand Lake38 ft deep · 5.3 mi · Hillsdale County

Broom Lake24 ft deep · 5.4 mi · Hillsdale County

North Sand Lake40 ft deep · 5.5 mi · Hillsdale County

Michigan DNR survey; straight-line miles.

Common questions

How deep is Hemlock Lake?

Hemlock Lake is 60 feet at its deepest point, measured by Michigan DNR survey. It covers 150 acres.

Is there a public boat launch on Hemlock Lake?

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

Is Hemlock Lake stocked with fish?

Yes. Michigan DNR has stocked it 30 times since 1984, most recently 500 yellow perch on 3 May 2026.

How much of Hemlock Lake is deeper than 10 feet?

About 70% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.