Where is Coffeen Lake?

Coffeen Lake is a lake in Montgomery County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.

How deep is Coffeen Lake?

Coffeen Lake has a maximum depth of 60 feet and an average depth of 25 feet. The lake covers 881 acres.

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. Public access is listed as yes.

Can I fish at Coffeen Lake?

Coffeen Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Illinois's fish and wildlife agency, so check its current regulations before you go.

Coffeen Lake

Montgomery County, Illinois881 acresView map Directions

No nutrient or algae sampling on record from Illinois EPA for this lake.

Max depth

60 ft

Bathymetric survey

Area

881 acres

Surface area

Shoreline

36.8 mi

Measured length

Impaired · Mercury
60 ft max depth
Public access

See the measurements Directions Where to stay

Coffeen Lake in Montgomery County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 60 ft. Surface area: 881 acres.

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Coffeen Lake is a 881-acre lake in Montgomery County, Illinois with a maximum depth of 60 feet (25-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, Illinois EPA. Methodology: how these readings are compared.

What Coffeen Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water60 ft surveyed max depth

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Coffeen Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.

Whether Coffeen Lake is safe to swim in today is a call for the Illinois Environmental Protection Agency and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Coffeen Lake

These are the measurements Illinois EPA publishes for Coffeen Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. TSI undefined.

Ask about Coffeen Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

60 ft

Average depth

25 ft

Surface area

881 acres

Shoreline

36.8 mi

Public access

Yes

Listed by Illinois EPA

Recreation & Access

Boat Landings

Yes

Public Access

Coffeen LakePublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays 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

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Fishing Coffeen Lake

→ Coffeen Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Coffeen Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

Source: EPA ATTAINS assessment unit IL_ROG · Official waterbody report

Nearby Lakes in Montgomery County

Lake Hillsboro9 miView →Glenn Shoals Lake1 ft clear · Hypereutrophic11.6 miView →Lake Glenn Shoals12.5 miView →Lou Yaeger Lake1.8 ft clear · Hypereutrophic15 miView →Lake Lou Yaeger—View →Walton Lake—View →

Frequently asked questions about Coffeen Lake

Where is Coffeen Lake?: Coffeen Lake is a lake in Montgomery County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Coffeen Lake?: Coffeen Lake in Montgomery County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 60 ft. Surface area: 881 acres.
Is Coffeen Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Coffeen Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is Coffeen Lake?: Coffeen Lake has a maximum depth of 60 feet and an average depth of 25 feet. The lake covers 881 acres.
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. Public access is listed as yes.
Can I fish at Coffeen Lake?: Coffeen Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Illinois's fish and wildlife agency, so check its current regulations before you go.