Ogemaw County Lake Quality
Wisconsin, 2 lakes, average grade B (Good)
Ogemaw County has 2 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. With an average grade of B, Ogemaw County sits comfortably above the Michigan median.
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. Au Sable Lake East Central Basin,Goodar Township (A) is the cleanest in the county.
Quick Answers for Ogemaw County
Planning a trip? Check special fishing regulations for Au Sable Lake East Central Basin,Goodar Township, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
All Lakes in Ogemaw County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Au Sable Lake East Central Basin,Goodar Township | A | 10.5 ft | - | - |
| 2 | Au Sable Lake | B | 10 ft | - | - |
Source: EPA National Aquatic Resource Surveys, 2026.