Cedar Lake
Cedar Lake in Iosco County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 12 ft visibility. Surface area: 142.1 acres.
- Clarity
- 12 ft
- Area
- 142 acres
- Trend
- ↑ Improving
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Why Cedar 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 Cedar Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
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.
Cedar Lake is a 142-acre lake in Iosco County, Michigan. Overall water quality is improving over recent sampling years. The lake supports 20 documented fish species including Black bullhead, Bluegill, and Bluntnose minnow.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2017-09-10. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Cedar Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 12 ft. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Cedar Lake
Compare lakeside cabins, hotels, and vacation rentals near Cedar Lake in Iosco 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 Cedar Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 142 acres |
No bathymetric survey has been published for Cedar Lake, so its depth is not documented here.
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Cedar Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +2 m/yr | 2 |
EPA Impairment Status
Cedar Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MI040700030406-03 · Official waterbody report
Graded lakes near Cedar Lake
Cedar Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Iosco County
Frequently asked questions about Cedar Lake
Where is Cedar Lake?
- Cedar Lake is a lake in Iosco County, Michigan. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Cedar Lake?
- Cedar Lake in Iosco County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 12 ft visibility. Surface area: 142.1 acres.
Is Cedar Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Cedar Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What fish are in Cedar Lake?
- Fish species found in Cedar Lake include Black bullhead, Bluegill, Bluntnose minnow, Brown bullhead, Central mudminnow, Common shiner, Emerald shiner, Golden shiner, Iowa darter, Johnny darter, Largemouth bass, Mimic shiner, Northern pike, Pumpkinseed, Rock bass, Sand shiner, Smallmouth bass, Tadpole madtom, Western banded killifish, Yellow perch. Cedar Lake is located in Iosco County, Michigan.
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Where this data comes from
32 measurements from 1 monitoring station, 2016–2017. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS32 samples · 2016–2017
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database