Michigan

Keweenaw County

Its lakes, by the record · 74 lakes · 13,701 acres

Today in Keweenaw County

Updated 9 Oct 2026, 2:12 am EDT. Get alerts for Keweenaw County lakes

WEATHERNear Lac La Belle: Overnight: mostly clear, 41°F, wind NW 0 to 5 mph. Friday: mostly sunny, 56°F, wind NE 0 to 10 mph.

WARNINGSNo weather or fire warnings in effect for Keweenaw County.

FIRENo wildfires or prescribed burns reported within 25 miles of the county's centre.

BURNINGCampfires and debris burning: check today's status with Michigan DNR.

ALGAECAUTION Satellite detected cyanobacteria on Siskiwit Lake (about 2% of the lake, 5 Oct 2026), Lake Gratiot (about 21% of the lake, 5 Oct 2026), Lac La Belle (about 3% of the lake, 5 Oct 2026), Lake Desor (about 48% of the lake, 5 Oct 2026), Lake Medora (about 12% of the lake, 1 Oct 2026), Deer Lake (about 9% of the lake, 5 Oct 2026) and Schlatter Lake (about 20% of the lake, 1 Oct 2026). None detected on Lake Richie and Feldtmann Lake in the latest clear-sky image.

LAUNCHES7 public access sites on 7 lakes: 7 open.

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).

The lakes of Keweenaw County

74 lakes · 13,701 acres · 7 with measured depth · 7 with a public launch · 6 stocked

Keweenaw County has 74 lakes of 10 acres or more, 65 of them named, covering 13,701 acres of water. The largest is Siskiwit Lake at 4,008 acres; the deepest measured is Lake Gratiot at 70 ft. Michigan DNR has surveyed the depth of 7 lakes here. Several names repeat: 4 lakes are called Mud Lake, 2 lakes are called Meadow Lake and 2 lakes are called Lily Lake.

Shaded by deepest measured point

not measuredunder 101020305075100+deepest, feet

Lake outlines: Michigan hydrography (lakes of 10 acres or more). Depths: Michigan DNR lake surveys, fetched 7 Oct 2026. County line: U.S. Census TIGER. Not for navigation.

Largest lakes

22 lakes in Keweenaw County cover 100 acres or more. The 12 largest are listed here; the full register of 65 named lakes follows.

Lake	Acres	Deepest	Clarity	Launches	Last stocked
Siskiwit Lake	4,008		15 ft
Lake Gratiot	1,452	70 ft	13 ft	1	2008
Lac La Belle	1,205	38 ft	8 ft	1	2026
Lake Desor	1,060		8 ft
Lake Medora	690	about 30 ft (est.)	11 ft	1	2017
Lake Richie	494		10 ft
Feldtmann Lake	462		7 ft
Sargent Lake	354
Deer Lake	312	15 ft	6 ft
Schlatter Lake	273	about 25 ft (est.)	7 ft
Lake Fanny Hooe	230	about 40 ft (est.)	12 ft	1	2021
Chickenbone Lake	228

All 65 named lakes, plus 9 unnamed

Lake	Acres	Deepest	Clarity	Launches	Last stocked
Siskiwit Lake	4,008		15 ft
Lake Gratiot	1,452	70 ft	13 ft	1	2008
Lac La Belle	1,205	38 ft	8 ft	1	2026
Lake Desor	1,060		8 ft
Lake Medora	690	about 30 ft (est.)	11 ft	1	2017
Lake Richie	494		10 ft
Feldtmann Lake	462		7 ft
Sargent Lake	354
Deer Lake	312	15 ft	6 ft
Schlatter Lake	273	about 25 ft (est.)	7 ft
Lake Fanny Hooe	230	about 40 ft (est.)	12 ft	1	2021
Chickenbone Lake	228
Lake Bailey	208	9 ft		1	1991
Lake Halloran	194		8 ft
Intermediate Lake	174		9 ft
Lake Whittlesey	151		13 ft
Lake Harvey	128
Thayer Lake	127	5 ft	4 ft	1
Hatchet Lake	126		9 ft
Angleworm Lake	124		15 ft
LeSage Lake	114
Wood Lake	111		16 ft
Lake Livermore	75		13 ft
Hoar Lake	69	about 25 ft (est.)	7 ft
Breakfast Lake	62	about 35 ft (est.)	7 ft
Lake Benson	60		9 ft
Lake Addie	59	about 20 ft (est.)	7 ft
Lake Mason	59		9 ft
Lake Manganese	56	25 ft	10 ft	1	2004
Mud Lake, Eagle Harbor Township	52		3 ft
Beaver Lake	50		9 ft
Otter Lake	50		11 ft
Meadow Lake, Grant Township	48	about 25 ft (est.)	5 ft
Lake Eva	43		8 ft
Linklater Lake	42		9 ft
Mud Lake, Eagle Harbor Township	40	about 20 ft (est.)	4 ft
Lake Ojibway	37		4 ft
McDonald Lake	37		8 ft
Perch Lake	32		7 ft
Lily Lake, Grant Township	29	about 25 ft (est.)	8 ft
Lake Glazon	29	7 ft	6 ft
Amygdaloid Lake	28		16 ft
Copper Falls Lake	28	about 25 ft (est.)	7 ft
Lake Shesheeb	26		10 ft
Lake Ahmik	26		7 ft
Patterson Lake	26		7 ft
Owl Lake	25	about 20 ft (est.)
Sumner Lake	23		7 ft
Long Lake	21	about 15 ft (est.)
Lake Upson	17	about 25 ft (est.)	3 ft
Stickleback Lake	17		9 ft
Lily Lake, Eagle Harbor Township	17		4 ft
Lake Theresa	17		5 ft
Beaver Pond	16	about 15 ft (est.)
Forbes Lake	16		13 ft
Meadow Lake, Houghton Township	16	about 20 ft (est.)
Lake Wagejo	15		7 ft
Gull Lake	14		6 ft
Mud Lake, Allouez Township	14		2 ft
Newt Lake	14		12 ft
Bay Lake	13	about 25 ft (est.)	2 ft
Clear Lake	13		6 ft
Mud Lake, Grant Township	12
Lake Dustin	11		15 ft
Seneca Lake	10		8 ft

Acres: Michigan hydrography. Deepest: Michigan DNR survey; "est." marks an older Michigan EGLE estimate, rounded to 5 ft. Clarity: Michigan EGLE satellite averages 2018–23. Launches: Michigan DNR. Stocking: Michigan DNR Fisheries. Fetched 7–8 Oct 2026.

Deepest lakes

3 lakes in Keweenaw County are 25 ft deep or more by Michigan DNR survey. Lake Gratiot is the deepest at 70 ft, then Lac La Belle (38 ft), Lake Manganese (25 ft) and Deer Lake (15 ft). The depth of the other 58 named lakes has not been surveyed; where an older state estimate exists, the register gives it as an estimate.

Deepest measured point, feet

Lake Gratiot70 ft

Lac La Belle38 ft

Lake Manganese25 ft

Deer Lake15 ft

Lake Bailey9 ft

Lake Glazon7 ft

Thayer Lake5 ft

Michigan DNR lake survey deep points, fetched 7 Oct 2026.

Clearest water

Clarity is the depth at which a black-and-white Secchi disk disappears from view. Across 55 lakes with satellite readings, the middle value in Keweenaw County is 8 ft. The clearest is Amygdaloid Lake at about 16 ft, then Wood Lake (16 ft), Angleworm Lake (15 ft) and Siskiwit Lake (15 ft). The least clear is Bay Lake at about 2 ft. Clarity is not a test for bacteria or algae toxins.

Amygdaloid Lake16.1 ft

Wood Lake15.6 ft

Angleworm Lake15.4 ft

Siskiwit Lake14.8 ft

Lake Dustin14.5 ft

Lake Gratiot13.3 ft

Forbes Lake13.1 ft

Lake Whittlesey12.9 ft

Lake Livermore12.9 ft

Lake Fanny Hooe12.4 ft

Michigan EGLE satellite-derived Secchi depth, averages 2018–23, fetched 7 Oct 2026.

Public access

Michigan DNR lists 7 public access sites on 7 lakes in Keweenaw County; 6 require a Recreation Passport. The other 58 named lakes have no public access site listed by Michigan DNR.

Lake	Site	Facilities
Lake Gratiot	Gratiot Lake	1 ramp lane · 5 trailer spaces · vault toilet · Recreation Passport required
Lac La Belle	Lac La Belle Dock	2 ramp lanes · 30 trailer spaces · vault toilet · Recreation Passport required
Lake Medora	Lake Medora	1 ramp lane · 9 trailer spaces · vault toilet · Recreation Passport required
Lake Fanny Hooe	Ft. Wilkins State Park	1 ramp lane · 13 trailer spaces · vault toilet · Recreation Passport required
Lake Bailey	Lake Bailey	1 ramp lane · 5 trailer spaces · vault toilet · Recreation Passport required
Thayer Lake	Thayers Lake	2 trailer spaces · 3 car spaces
Lake Manganese	Lake Manganese	1 ramp lane · 1 trailer space · 3 car spaces · vault toilet · Recreation Passport required

Michigan DNR boating access sites, fetched 8 Oct 2026.

Stocked lakes

Michigan DNR has stocked 6 lakes in Keweenaw County 162 times since 1979. Walleye went into 4 lakes: Lac La Belle, Lake Fanny Hooe, Lake Gratiot and Lake Medora. The most recent stocking was 28,521 walleye in Lac La Belle on 23 June 2026. Rivers and smaller waters stocked in the county: Big Betsy River, Eliza Lake, Gratiot River, Lake Superior, Lost Lake, Montreal River and Tobacco River.

Species	Lakes	Where
Walleye	4	Lac La Belle, Lake Fanny Hooe, Lake Gratiot and Lake Medora
Splake	3	Lake Fanny Hooe, Lake Manganese and Lake Medora
Rainbow trout	3	Lake Fanny Hooe, Lake Gratiot and Lake Medora
Brook trout	3	Lake Fanny Hooe, Lake Gratiot and Lake Manganese
Tiger muskellunge	3	Lac La Belle, Lake Bailey and Lake Gratiot
Lake trout	2	Lake Fanny Hooe and Lake Medora
Brown trout	2	Lake Fanny Hooe and Lake Medora
Smallmouth bass	2	Lake Fanny Hooe and Lake Gratiot
Yellow perch	1	Lake Medora

162 stockings, 1979 to 2026, fish stocked per year on a log scale

2026: 1 stocking, 28,521 fish in 1 lake.

23 Jun 2026STOCKED28,521 walleye, Lac La Belle

18 Jun 2024STOCKED27,468 walleye, Lac La Belle

2 Nov 2021STOCKED100 lake trout, Lake Fanny Hooe

12 Nov 2019STOCKED100 lake trout, Lake Fanny Hooe

12 Nov 2019STOCKED50 lake trout, Lake Fanny Hooe

6 Nov 2019STOCKED100 lake trout, Lake Fanny Hooe

6 Nov 2019STOCKED50 lake trout, Lake Fanny Hooe

6 Nov 2019STOCKED60 lake trout, Lake Fanny Hooe

Michigan DNR Fisheries stocking records, fetched 8 Oct 2026. Each stocking is placed by its survey section, so lakes that share a name are kept apart. How we measure

Algae and water testing

Michigan DHHS has records for 4 lakes in Keweenaw County: water samples tested for the toxin microcystin, and bloom reports from the public that may not have been tested. 0 lakes have measured at or above the EPA swimming guideline of 8 ppb at least once.

21 Oct 2024TESTEDLake Gratiot: 2 water samples, latest 5 Oct 2022; 3 earlier reports.

11 Aug 2022TESTEDChickenbone Lake: 2 water samples, latest 11 Aug 2022.

11 Aug 2022TESTEDLake Richie: 4 water samples, latest 11 Aug 2022.

25 Jul 2022TESTEDLake Desor: 5 water samples, latest 25 Jul 2022.

Michigan DHHS harmful algal bloom records, fetched 7 Oct 2026; U.S. EPA 2019 recreational criteria. Beach E. coli testing is not yet covered here.

Common questions

How many lakes are in Keweenaw County?

74 lakes of 10 acres or more, 65 of them named, in Michigan's hydrography layer. Smaller ponds are not counted.

What is the largest lake in Keweenaw County?

Siskiwit Lake, at 4,008 acres.

What is the deepest lake in Keweenaw County?

Lake Gratiot, 70 ft at its deepest point by Michigan DNR survey.

Which lake in Keweenaw County has the clearest water?

Amygdaloid Lake, with an average Secchi depth of about 16 ft (satellite readings, 2018–23).

Which Keweenaw County lakes have public access?

Michigan DNR lists public access sites on Lake Gratiot, Lac La Belle, Lake Medora, Lake Fanny Hooe, Lake Bailey, Thayer Lake and Lake Manganese.

Which Keweenaw County lakes are stocked with walleye?

Lac La Belle, Lake Fanny Hooe, Lake Gratiot and Lake Medora, by Michigan DNR stocking records.

Have Keweenaw County lakes had toxic algae?

Michigan DHHS has algae records for 4 lakes here; 0 measured at or above the EPA swimming guideline of 8 ppb at least once.