Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Ogemaw County Lake Quality

Michigan, 50 lakes, average grade A (Excellent)

Ogemaw County in Michigan carries 50 monitored lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. 1 of those lake carry an A–F grade. The county-level summary describes that subset, not every water body listed. The county's average grade is A — among the cleanest in Michigan. 1 lakes pull an A on their own, and almost none fall into the D or F brackets.

The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Au Sable Lake (A); the most-stressed is Au Sable Lake (A).

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Quick Answers for Ogemaw County

Cleanest lakes in Ogemaw County →Cleanest lakes in Michigan →Safest swimming lakes in Michigan →

Planning a trip? Check special fishing regulations for Au Sable Lake, whether the fish are safe to eat, and the best times to fish — or check the official Michigan fishing regulations.

Fishing in Ogemaw County

Ogemaw County Fishing Guide

Fish species and best-graded lakes in Ogemaw County

All Lakes in Ogemaw County

50 lakes · 1 graded, 49 not rated1 graded lake · 49 not rated, hidden

Include not-rated lakes (49)

#	Lake	Grade	Clarity	Phosphorus	Algae	Trophic	Max Depth	Access
1	AAu Sable LakeOgemaw	A	10.5 ft	10 µg/L	3.3 µg/L	No recent samples	52 ft	✓ Public
	NRClear LakeOgemaw	NR	15 ft	No recent samples	No recent samples	No recent samples	50 ft	✓ Public
	NRRifle LakeOgemaw	NR	No recent samples	24.5 µg/L	No recent samples	No recent samples	70 ft	✓ Public
	NRIsland LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	25 ft	Not recorded
	NRRifle LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	70 ft	✓ Public
	NRGrousehaven LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	50 ft	✓ Public
	NRLake AugustinaOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	35 ft	Not recorded
	NRNorth Dease LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	47 ft	Not recorded
	NRGrebe LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	34 ft	Not recorded
	NRDevoe LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	50 ft	✓ Public
	NRGeorge LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	90 ft	✓ Public
	NRSouth Dease LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	44 ft	Not recorded
	NRLaird LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	37 ft	Not recorded
	NRTwin Lake (east)Ogemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	33 ft	Not recorded
	NRSage LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	70 ft	Not recorded
	NRTwin Lake (west)Ogemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	33 ft	Not recorded
	NRHenderson LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	37 ft	Not recorded
	NRBig Norway LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	32 ft	Not recorded
	NRArrowhead LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	36 ft	Not recorded
	NRStylus LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	36 ft	Not recorded
	NRPeach LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	50 ft	✓ Public
	NRLake OgemawOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	41 ft	Not recorded
	NRHardwood LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	35 ft	✓ Public
	NRCabin LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	40 ft	Not recorded
	NRLake GeorgeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	45 ft	✓ Public
	NRJohnson LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	42 ft	Not recorded
	NRCranberry LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	47 ft	Not recorded
	NREdwards LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	20 ft	Not recorded
	NRFrost LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	34 ft	Not recorded
	NRChatman LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	17 ft	Not recorded
	NRMills LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRFeeding Ground LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRSkidway LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRBush LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	NRNorway LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRElbow LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRHewey LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRBoughner LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRLittle Stylus LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NREast Stylus LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRJenkins LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRAmbrose LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	NRHorseshoe LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	NREagle LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRPrior LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRFlowage LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NROgemaw LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRGear LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	NRTee LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	NREdwards LakeOgemaw	NR	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded

NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.

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Other Counties in Michigan

Dickinson County

43 lakes · Avg grade A

Clare County

47 lakes · Avg grade A

Cheboygan County

31 lakes · Avg grade A

Roscommon County

26 lakes · Avg grade A

Gladwin County

29 lakes · Avg grade A

Alcona County

26 lakes · Avg grade A

See how Ogemaw County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: EPA National Aquatic Resource Surveys, 2026.