Dunlap Lake
Dunlap Lake in Madison County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 106 acres.
- Area
- 106 acres
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Why Dunlap 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 Dunlap 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.
Dunlap Lake is a 106-acre lake in Madison 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 Dunlap 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 Dunlap Lake
Compare lakeside cabins, hotels, and vacation rentals near Dunlap Lake in Madison 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 Dunlap Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 106 acres |
No bathymetric survey has been published for Dunlap Lake, so its depth is not documented here.
Fishing Dunlap Lake
Nearby Lakes in Madison County
Frequently asked questions about Dunlap Lake
Where is Dunlap Lake?
- Dunlap Lake is a lake in Madison 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 Dunlap Lake?
- Dunlap Lake in Madison County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 106 acres.
Is Dunlap Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Dunlap 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 Dunlap Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.