Where is Dunlap Lake?

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

How deep is Dunlap Lake?

Dunlap Lake has a maximum depth of 27 feet and an average depth of 11 feet. The lake covers 106 acres.

Dunlap Lake

Madison County, Illinois106 acresView map Directions

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

Max depth

27 ft

Bathymetric survey

Area

106 acres

Surface area

Shoreline

6.5 mi

Measured length

27 ft max depth

See the measurements Directions Where to stay

Dunlap Lake in Madison County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 27 ft. Surface area: 106 acres.

Loading map…

Dunlap Lake is a 106-acre lake in Madison County, Illinois with a maximum depth of 27 feet (11-foot average).

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

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Dunlap 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.

Compare swimming lakes near St. Louis →

Get alerts for Dunlap Lake →

Water quality measurements for Dunlap Lake

These are the measurements Illinois EPA publishes for Dunlap 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 Dunlap Lake

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

Lake Details

Max depth

27 ft

Average depth

11 ft

Surface area

106 acres

Shoreline

6.5 mi

Stays via Stay22

Stays 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

Prices for Oct 9–11, 4 adults. Change dates on the map below.

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 →

Follow Dunlap Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Dunlap Lake

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

Nearby Lakes in Madison County

Tower Lake4 miView →Holiday Shores Lake1.7 ft clear · Hypereutrophic8.4 miView →McDonough Lake8.1 miView →Long Lake9.1 miView →Long Lake8.9 miView →Horseshoe Lake11.5 miView →

Frequently asked questions about Dunlap Lake

Where is Dunlap Lake?: Dunlap Lake is a lake in Madison County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Dunlap Lake?: Dunlap Lake in Madison County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 27 ft. Surface area: 106 acres.
Is Dunlap Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Dunlap Lake?: Dunlap Lake has a maximum depth of 27 feet and an average depth of 11 feet. The lake covers 106 acres.