Cook County · Minnesota

Greenwood Lake

Soundings in feet · 2,043 acres · deepest 112 ft

Where it is

19 miles northeast of Grand Marais

Cook County, Minnesota · 48.0015° N, 90.1730° W

Directions to Greenwood Lake Public Water Access Site Apple Maps

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

Today on the lake

Updated 19 Oct 2026, 5:55 pm EDT.

WEATHERThis Afternoon: sunny, 60°F, wind 0 mph. Tonight: mostly clear, 33°F, wind SE 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 fire danger and burning restrictions with Minnesota DNR.

ALGAECAUTION Satellite detected cyanobacteria across about 4% of the lake on 10 Oct 2026, the latest clear-sky image.

National Weather Service; National Interagency Fire Center; U.S. EPA CyAN satellite; Minnesota DNR. Weather, warnings, fires and satellite refresh when you open the page (checked at most hourly).

Depth map

12 contours, 5 to 100 ft

0510152030405060708090100feet

Minnesota DNR lake survey, fetched 15 Oct 2026. Not for navigation.

Getting on the water

1 public access site on Greenwood Lake.

Greenwood Lake Public Water Access Site · U.S. Forest Service

trailer launch · 1 ramp · concrete ramp · 1 dock · 6 trailer spaces · restroom

Minnesota DNR public water accesses, fetched 15 Oct 2026.

Fish survey

Minnesota DNR’s latest standard fish survey of Greenwood Lake was in August 2022: 12 trap nets caught 8 species. The DNR also ran a targeted survey in August 2025; this section uses the latest standard survey.

Fish per trap net, 12 sets. Line: Greenwood Lake. Bracket: normal for similar lakes.

Smallmouth bass0.4below normal

Yellow perch0.2below normal

Smallmouth bass per trap net, standard surveys: 2009 1.5 · 2015 0.8 · 2017 0.8 · 2019 0.2 · 2022 0.4

Sizes in the nets

Smallmouth bass: 12 measured, 7 to 13 in, half 11 in or longer; average 0.48 lb, normal (normal 0.2–0.6 lb).

Yellow perch: 13 measured, 10 to 12 in, half 11 in or longer; average 0.93 lb, above normal (normal 0.1–0.4 lb).

Also caught: northern pike.

Source: Minnesota DNR Fisheries lake survey, 22 Aug 2022, via LakeFinder, fetched 15 Oct 2026. Normal range: DNR’s range for lakes of the same class (43 classes, grouped by water chemistry and shape). Each line has its own scale. How we measure

Water quality

Measured water clarity averages about 16 ft: the Secchi depth across 32 readings, 1955–2023.

Clarity 16.5 ft of 112 ft

Minnesota Pollution Control Agency and volunteer Secchi readings, via Minnesota DNR LakeFinder, fetched 15 Oct 2026.

Nearby lakes with measured depth

Devilfish Lake40 ft deep · 3.2 mi · Cook County

Chester Lake35 ft deep · 4.3 mi · Cook County

McFarland Lake49 ft deep · 6.0 mi · Cook County

Alder Lake72 ft deep · 6.4 mi · Cook County

Tom Lake35 ft deep · 7.9 mi · Cook County

Trout Lake77 ft deep · 9.0 mi · Cook County

Minnesota DNR lake survey; straight-line miles.

Common questions

How deep is Greenwood Lake?

Greenwood Lake is 112 feet at its deepest point, measured by Minnesota DNR survey. It covers 2,043 acres.

Is there a public boat launch on Greenwood Lake?

Yes. 1 public access site is listed: Greenwood Lake Public Water Access Site.

What fish are in Greenwood Lake?

Minnesota DNR’s August 2022 standard survey caught 8 species, most often smallmouth bass, yellow perch and northern pike.

How much of Greenwood Lake is deeper than 10 feet?

About 88% of the lake's area is deeper than 10 feet, measured from Minnesota DNR depth contours.