Coffeen Lake
Coffeen Lake in Montgomery County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 881 acres.
- Area
- 881 acres
Next lake in Montgomery County
Swipe left or right on this bar to open the next or previous lake.
Why Coffeen 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 Coffeen 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.
Coffeen Lake is a 881-acre lake in Montgomery County, Illinois.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Coffeen Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Coffeen 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 Coffeen Lake
Compare lakeside cabins, hotels, and vacation rentals near Coffeen Lake in Montgomery 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 Coffeen Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Illinois’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 881 acres |
No bathymetric survey has been published for Coffeen Lake, so its depth is not documented here.
Recreation & Access
- Coffeen LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Coffeen Lake
Nearby Lakes in Montgomery County
Frequently asked questions about Coffeen Lake
Where is Coffeen Lake?
- Coffeen Lake is a lake in Montgomery 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 Coffeen Lake?
- Coffeen Lake in Montgomery County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 881 acres.
Is Coffeen Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Coffeen Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Coffeen Lake?
- Coffeen Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Coffeen Lake.
Explore Coffeen Lake across LakeQuality
More Illinois Lake Rankings
Other Lakes in Illinois
Where this data comes from
Measurements for Coffeen Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory