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LakeQuality
B

Mecosta County Lake Quality

Michigan, 12 lakes, average grade B (Good)

Only 12 lakes in Mecosta County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.

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. Chippewa Lake Northeast Basin; Chippewa Township (A) is the cleanest in the county.

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All Lakes in Mecosta County

RankLakeGradeClarityPhosphorus
1Chippewa Lake Northeast Basin; Chippewa TownshipA12.8 ft-
2Horsehead Lake Northwest Basin; Martiny TownshipA10 ft-
3Blue Lake North Central BasinA11 ft-
4Chippewa LakeB11.5 ft-
5Mecosta Lake North Basin; Morton TownshipB9 ft-
6Horsehead LakeB11.5 ft-
7Blue LakeB10 ft-
8Rogers Dam Pond; Central Basin; Mecosta TownshipB11.5 ft-
9Round Lake North BasinB9.5 ft-
10Round LakeC8.5 ft-
11Lake MecostaC8.5 ft-
12Canadian Lake Southeast Basin; Morton TownshipF3 ft-

See how Mecosta County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 15 states.

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Source: EPA National Aquatic Resource Surveys, 2026.