Little Swan Lake
Warren County, Illinois228 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
- 31 ft max depth
Little Swan Lake in Warren County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 31 ft. Surface area: 228 acres.
Little Swan Lake is a 228-acre lake in Warren County, Illinois with a maximum depth of 31 feet (8-foot average).
Source: EPA Water Quality Portal sampling records, Illinois EPA. Methodology: how these readings are compared.
What Little Swan Lake is good for
From access and monitoring records, not editorial picks.
- Deep water31 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Little Swan 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.
Water quality measurements for Little Swan Lake
These are the measurements Illinois EPA publishes for Little Swan 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 Little Swan Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
31 ft
Average depth
8 ft
Surface area
228 acres
Shoreline
7.4 mi
Stays via Stay22
Stays near Little Swan Lake
Compare lakeside cabins, hotels, and vacation rentals near Little Swan Lake in Warren 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 Little Swan Lake
Prices for Oct 16–18, 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 Little Swan Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Little Swan Lake
Nearby Lakes in Warren County
Frequently asked questions about Little Swan Lake
Where is Little Swan Lake?
- Little Swan Lake is a lake in Warren County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Little Swan Lake?
- Little Swan Lake in Warren County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 31 ft. Surface area: 228 acres.
Is Little Swan Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Little Swan Lake?
- Little Swan Lake has a maximum depth of 31 feet and an average depth of 8 feet. The lake covers 228 acres.
Explore Little Swan Lake across LakeQuality
More lakes in Illinois
Other Lakes in Illinois
Where this data comes from
Measurements for Little Swan Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.