Lake Carroll
Lake Carroll in Carroll County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 606 acres.
- Area
- 606 acres
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Why Lake Carroll 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 Lake Carroll, 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.
Lake Carroll is a 606-acre lake in Carroll County, Illinois.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Carroll 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 Lake Carroll
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 Lake Carroll
Compare lakeside cabins, hotels, and vacation rentals near Lake Carroll in Carroll 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 Lake Carroll
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 606 acres |
No bathymetric survey has been published for Lake Carroll, so its depth is not documented here.
Fishing Lake Carroll
Nearby Lakes in Carroll County
Frequently asked questions about Lake Carroll
Where is Lake Carroll?
- Lake Carroll is a lake in Carroll 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 Lake Carroll?
- Lake Carroll in Carroll County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 606 acres.
Is Lake Carroll safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Carroll 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 Lake Carroll come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.