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

Montmorency County Lake Quality

Michigan, 41 lakes — no lake here has enough monitoring data for a grade

There are 41 monitored lakes in Montmorency County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. No lake in Montmorency County has enough sampling behind it for an A–F grade yet. The 41 monitored lakes below carry whatever clarity, phosphorus, and chlorophyll-a measurements exist.

Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed.

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Top-rated places to stay near Montmorency County

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Quick Answers for Montmorency County

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

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

Fishing in Montmorency County

Montmorency County Fishing Guide

Fish species and best-graded lakes in Montmorency County

All Lakes in Montmorency County

41 lakes · 0 graded, 41 not rated0 graded lakes · 41 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicMax DepthAccess
NRAvery LakeMontmorencyNR27 ftNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NREast Twin LakeMontmorencyNR8 ftNo recent samplesNo recent samplesNo recent samples25 ft✓ Public
NRWest Twin LakeMontmorencyNR13 ftNo recent samplesNo recent samplesNo recent samples28 ft✓ Public
NRLake GenevaMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples36 ftNot recorded
NRCranberry LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples17 ftNot recorded
NRRush LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples30 ft✓ Public
NRLong LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples80 ftNot recorded
NRGrass LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples6 ft✓ Public
NRFoch LakesMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples27 ftNot recorded
NRClear LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples90 ft✓ Public
NREss LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples50 ft✓ Public
NRMuskellunge LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples34 ftNot recorded
NRAvalon LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples70 ft✓ Public
NRLittle Brush LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRValentine LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples42 ftNot recorded
NRHillman ImpoundmentMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRTwin LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples26 ftNot recorded
NRAtlantaMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples9 ft✓ Public
NRLake FifteenMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples55 ft✓ Public
NRCrooked LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples30 ft✓ Public
NRGaylanta LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples50 ftNot recorded
NRMcCormick LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples70 ft✓ Public
NRLockwood LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples17 ftNot recorded
NRTurtle LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples62 ftNot recorded
NRSpectacle Lake (MiddleMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples50 ftNot recorded
NRLake Big WolfMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples20 ftNot recorded
NRLittle Wolf LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samples32 ftNot recorded
NRWalled LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRUpper Tomahawk LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWildfowl LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRTwin Tomahawk LakesMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRRush LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCranberry LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBedore LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHorseshoe LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRJackson LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRVoyer LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRDe Cheau LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRLake InezMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCrooked LakeMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRSage LakesMontmorencyNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot 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

Ogemaw County

50 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

See how Montmorency 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.