Frye Lake
Frye Lake in Mercer County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 119 acres.
- Area
- 119 acres
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Why Frye 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 Frye 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 Illinois EPA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Frye Lake is a 119-acre lake in Mercer County, Illinois.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled recent years. Grade methodology: LakeQuality methodology.
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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 Frye 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 Frye Lake
Compare lakeside cabins, hotels, and vacation rentals near Frye Lake in Mercer County, Illinois — 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 Frye Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 119 acres |
No bathymetric survey has been published for Frye Lake, so its depth is not documented here.
Fishing Frye Lake
Nearby Lakes in Mercer County
Frequently asked questions about Frye Lake
Where is Frye Lake?
- Frye Lake is a lake in Mercer County, Illinois. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Frye Lake?
- Frye Lake in Mercer County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 119 acres.
Is Frye Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Frye 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 Frye Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.