Silver Lake; Central Basin; Koehler Township
Silver Lake; Central Basin; Koehler Township in Cheboygan County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 12.5 ft visibility. Phosphorus: 8 µg/L. Surface area: 76.7 acres.
- Clarity
- 12.5 ft
- Mean depth
- ~16 ft est.
- Area
- 77 acres
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Why Silver Lake; Central Basin; Koehler Township 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 Silver Lake; Central Basin; Koehler Township, 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 and phosphorus, but not 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.
Silver Lake; Central Basin; Koehler Township is a 77-acre lake in Cheboygan County, Michigan with an estimated average depth of about 16 feet. The lake supports 15 documented fish species including Bluegill, Bluntnose minnow, and Green sunfish.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2016-09-05. 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
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Water quality measurements for Silver Lake; Central Basin; Koehler Township
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 12.5 ft. Phosphorus level: 8 µg/L. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12.5 ft | Not graded |
| Phosphorus | 8 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Silver Lake; Central Basin; Koehler Township
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Lake Details
| Characteristic | Value |
|---|---|
| Average Depth | ~16 ft est. |
| Surface Area | 77 acres |
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Michigan has not published bathymetry for Silver Lake; Central Basin; Koehler Township.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Silver Lake; Central Basin; Koehler Township
- → Silver Lake; Central Basin; Koehler Township fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Silver Lake; Central Basin; Koehler Township fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Silver Lake; Central Basin; Koehler Township? (mercury & PFAS guide)
Graded lakes near Silver Lake; Central Basin; Koehler Township
Silver Lake; Central Basin; Koehler Township has no grade, but these lakes within a short drive do.
Nearby Lakes in Cheboygan County
Frequently asked questions about Silver Lake; Central Basin; Koehler Township
Where is Silver Lake; Central Basin; Koehler Township?
- Silver Lake; Central Basin; Koehler Township is a lake in Cheboygan 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 Silver Lake; Central Basin; Koehler Township?
- Silver Lake; Central Basin; Koehler Township in Cheboygan County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 12.5 ft visibility. Phosphorus: 8 µg/L. Surface area: 76.7 acres.
Is Silver Lake; Central Basin; Koehler Township safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Silver Lake; Central Basin; Koehler Township is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Silver Lake; Central Basin; Koehler Township?
- No published bathymetric survey covers Silver Lake; Central Basin; Koehler Township, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 16 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 76.7 acres.
What fish are in Silver Lake; Central Basin; Koehler Township?
- Fish species found in Silver Lake; Central Basin; Koehler Township include Bluegill, Bluntnose minnow, Green sunfish, Hornyhead chub, Iowa darter, Johnny darter, Largemouth bass, Northern longear sunfish, Pumpkinseed, Smallmouth bass, Spotted gar, Western banded killifish, White sucker, Yellow bullhead, Yellow perch. Silver Lake; Central Basin; Koehler Township is located in Cheboygan County, Michigan.
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Where this data comes from
12 measurements from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS12 samples · 2016
Analytical methods
- Phosphorus by Colorimetry
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
Lake size & watershed from HydroLAKES (HydroSHEDS)