Redwing Slough Lake
Redwing Slough Lake in Lake County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 202 acres.
- Area
- 202 acres
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Why Redwing Slough 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 Redwing Slough 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.
Redwing Slough Lake is a 202-acre lake in Lake 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 Redwing Slough 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 Redwing Slough Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 202 acres |
No bathymetric survey has been published for Redwing Slough Lake, so its depth is not documented here.
Fishing Redwing Slough Lake
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Frequently asked questions about Redwing Slough Lake
Where is Redwing Slough Lake?
- Redwing Slough Lake is a lake in Lake 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 Redwing Slough Lake?
- Redwing Slough Lake in Lake County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 202 acres.
Is Redwing Slough Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Redwing Slough 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 Redwing Slough Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.