Where is Lake Petersburg?

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

How deep is Lake Petersburg?

Lake Petersburg has a maximum depth of 60 feet and an average depth of 22.6 feet. The lake covers 177 acres.

Lake Petersburg

Menard County, Illinois177 acresView map Directions

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

Max depth

60 ft

Bathymetric survey

Area

177 acres

Surface area

Shoreline

13.5 mi

Measured length

60 ft max depth

See the measurements Directions Where to stay

Lake Petersburg in Menard County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 60 ft. Surface area: 177 acres.

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Lake Petersburg is a 177-acre lake in Menard County, Illinois with a maximum depth of 60 feet (23-foot average).

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

What Lake Petersburg is good for

From access and monitoring records, not editorial picks.

Deep water60 ft surveyed max depth

Swimming conditions

No reading

Not rated

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

Whether Lake Petersburg 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 Lake Petersburg

These are the measurements Illinois EPA publishes for Lake Petersburg, 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 Lake Petersburg

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

Lake Details

Max depth

60 ft

Average depth

22.6 ft

Surface area

177 acres

Shoreline

13.5 mi

Stays via Stay22

Stays near Lake Petersburg

Compare lakeside cabins, hotels, and vacation rentals near Lake Petersburg in Menard 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 Lake Petersburg

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Fishing Lake Petersburg

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

Nearby Lakes in Menard County

Sudduth Lake18.6 miView →Finger Lake15.3 miView →Wolf Lake17.1 miView →Lake Springfield1.5 ft clear20.7 miView →Sand Lake—View →Bath Lake21.2 miView →

Frequently asked questions about Lake Petersburg

Where is Lake Petersburg?: Lake Petersburg is a lake in Menard County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Lake Petersburg?: Lake Petersburg in Menard County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 60 ft. Surface area: 177 acres.
Is Lake Petersburg safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Petersburg?: Lake Petersburg has a maximum depth of 60 feet and an average depth of 22.6 feet. The lake covers 177 acres.