Beach · Lake Michigan · Michigan
Big Knob State Forest Campground
A public beach on Lake Michigan in Mackinac County, Michigan, 2.8 miles of shore. It is on the federal list of BEACH Act beaches but was not on the state’s sampling schedule in the latest report.
The beach
On the record
- Water
- Lake Michigan
- Location
- Mackinac County, Michigan
- Length
- 2.8 miles
- Owner
- Public
- Access
- Public Access
- Water sampling
- Not monitored in 2025
- Swim season
- 105 days, as reported
- Monitoring tier
- Tier 3 (Tier 1 is highest)
- Water quality standard
- E. coli, geometric mean: 300 per 100 mL
- EPA beach ID
- MI158452
- Coordinates
- 46.0238° N, 85.6064° W to 46.0600° N, 85.5682° W
As the state reported it to EPA for the 2025 season. Sampling schedules change year to year. How beach monitoring works →
Down the shore
Nearest Michigan beaches
- Public Shoreline Beach-Fox Point Area0.1 mi · MI
- Naubinway Bay Access8.8 mi · MI
- Public Shoreline Beach-Seiners Point10 mi · MI
- MDOT Roadside Park on US 211 mi · MI
- Public Shoreline Beach-Naubinway Area11 mi · MI
- Public Shoreline Beach-State Forest Matrix Point13 mi · MI
Straight-line distance.
Off the beach
What to fish on Lake Michigan
Source
Facts on this page are from the EPA BEACON profile for beach MI158452, the record Michigan files under the federal BEACH Act, retrieved 2026-10-10. The county is placed from the beach’s own coordinates. A blank field means the record is silent. Parking, fees, lifeguards and dog rules are set by whoever runs the beach; check with them before you go.
Chart shoreline generalized from Natural Earth (public domain). Not for navigation. Something wrong or missing? Write to contact@greatamericanlakes.com.