Osmun Lake
Osmun Lake in Cheboygan County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 48 acres.
- Area
- 48 acres
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Why Osmun Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Osmun Lake, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by EGLE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Osmun Lake is a 48-acre lake in Cheboygan County, Michigan.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Osmun Lake water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Osmun Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Osmun Lake
Compare lakeside cabins, hotels, and vacation rentals near Osmun Lake in Cheboygan County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Osmun Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 48 acres |
No bathymetric survey has been published for Osmun Lake, so its depth is not documented here.
Fishing Osmun Lake
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Frequently asked questions about Osmun Lake
Where is Osmun Lake?
- Osmun Lake is a lake in Cheboygan County, Michigan. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Osmun Lake?
- Osmun Lake in Cheboygan County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 48 acres.
Is Osmun Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Osmun Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
Measurements for Osmun Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.