Sporley Lake, Marquette County, MI: Depth Map, Fishing & Water Quality

Where it is

15 miles south of Marquette

Marquette County, Michigan · 46.3340° N, 87.3405° W

Directions to Sporley Lake Apple Maps

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

Today on the lake

Updated 14 Oct 2026, 5:23 pm EDT. Get alerts for Sporley Lake

WEATHERThis Afternoon: cloudy, 53°F, wind N 10 mph. Tonight: mostly cloudy, 37°F, wind NE 0 to 10 mph.

WARNINGSNo weather or fire warnings in effect.

FIRECAUTION Wildfire Ridge, 450 acres, 22.3 mi away, 20% contained, reported 9 Oct 2026.

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.

LAUNCHESSporley 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

9 contours, 5 to 42 ft

051015202530354042feet

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

Size and depth

77 acres · deepest 42 ft (measured) · shoreline about 1.8 mi · clarity about 14 ft

Sporley Lake is the 67th largest of the 239 named lakes of 10 acres or more in Marquette County. By Michigan DNR survey it is the 15th deepest of the 68 with a measured depth. Its water is clearer than 187 of the other 200 lakes in the county with satellite clarity readings. Its shoreline measures about 1.8 miles along the state outline. About 45% of its area is deeper than 25 ft.

Ranks against Marquette 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 Sporley Lake.

Sporley Lake · Escanaba Customer Service Center (PRD) · Open

1 ramp lane · 3 trailer spaces · 3 car spaces · Recreation Passport required

Local boating rules, Marquette County

Michigan DNR boating access, fetched 7 Oct 2026.

Fishing

Michigan DNR has stocked Sporley Lake 86 times since 1981. The most recent stocking was 1,400 brown trout on 4 May 2026. Species stocked: brook trout, brown trout, lake trout, splake.

86 stockings, 1981 to 2026, log scale

Latest: 4 May 2026: 1,400 brown trout.

4 May 2026STOCKED1,400 brown trout

28 Apr 2026STOCKED1,999 splake

30 Oct 2025STOCKED45 lake trout

19 May 2025STOCKED2,000 splake

13 May 2025STOCKED1,498 brown trout

2 Jan 2025STOCKED46 lake trout

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 14 ft (Secchi depth 4.4 m, satellite readings 2018–23).

Clarity 14.4 ft of 42 ft

Michigan EGLE satellite clarity, fetched 7 Oct 2026.

The area around Sporley Lake

151 other lakes of 10+ acres within about 21 miles of Sporley Lake, 4 with a page here (darker blue); 1 public launch in magenta. Sources: Michigan DNR, US Census Bureau.

Nearby lakes with measured depth

Engman Lake36 ft deep · 0.6 mi · Marquette County

Big Trout Lake15 ft deep · 0.8 mi · Marquette County

Moccasin26 ft deep · 1.9 mi · Marquette County

Farmer Lake30 ft deep · 2.9 mi · Marquette County

Stump Lake5 ft deep · 2.9 mi · Marquette County

Northwestern Lake14 ft deep · 3.7 mi · Marquette County

Michigan DNR survey; straight-line miles.

Common questions

How deep is Sporley Lake?

Sporley Lake is 42 feet at its deepest point, measured by Michigan DNR survey. It covers 77 acres.

Is there a public boat launch on Sporley Lake?

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

Is Sporley Lake stocked with fish?

Yes. Michigan DNR has stocked it 86 times since 1981, most recently 1,400 brown trout on 4 May 2026.

How much of Sporley Lake is deeper than 10 feet?

About 82% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.