Osceola County Lake Quality
Michigan, 6 lakes, average grade A (Excellent)
Osceola County has 6 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The county's average grade is A — among the cleanest in Michigan. 4 lakes pull an A on their own, and almost none fall into the D or F brackets.
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. Center Lake (A) is the cleanest in the county.
Quick Answers for Osceola County
Planning a trip? Check special fishing regulations for Center Lake — or check the official Michigan fishing regulations.
Fishing in Osceola County
All Lakes in Osceola County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Center Lake | A | 15 ft | - |
| 2 | Center Lake | A | 15 ft | - |
| 3 | Diamond Lake | A | 16 ft | - |
| 4 | Rose Lake East Basin; Rose Lake Township | A | 11.5 ft | - |
| 5 | Rose Lake | B | 10.8 ft | - |
Other Counties in Michigan
See how Osceola County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 15 states.
Where to stay near Osceola County
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Source: EPA National Aquatic Resource Surveys, 2026.