Au Sable River is a fishing water in Iosco County, Michigan (Northern Lake Huron management unit).
Fishing pressure is our estimate of how busy Au Sable River (Iosco County) is likely to be today. It looks at the day of the week, the time of year, and whether the lake has been stocked recently, because fresh stockings tend to draw anglers. Lower pressure usually means more room to work the water for bluegill, channel catfish and coho salmon.
Moderate activity expected. Midweek mornings are typically quieter.
Estimate based on day of week, season, and recent stocking. Not a live crowd count.
Combined bite activity across all 84 species in this lake.
| Species | Min size | Daily limit |
|---|---|---|
| Bluegill | None | 25 sunfish combined |
| Channel Catfish | 12" | 10 |
| Northern Pike | 24" | 2 |
| Rainbow Trout | 8" (most inland lakes) | 5 trout, max 3 over 15" |
| Smallmouth Bass | 14" | 5 bass combined |
| Walleye | 15" | 5 |
| Yellow Perch | None | 25 |
| Rock Bass | None | 25 sunfish combined |