Where is Randolph County Lake?

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

How deep is Randolph County Lake?

Randolph County Lake has a maximum depth of 35 feet and an average depth of 19 feet. The lake covers 80 acres.

Are there boat ramps on Randolph County Lake?

Randolph County Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Randolph County Lake. Public access is listed as yes.

Can I fish at Randolph County Lake?

Randolph County 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.

Randolph County Lake

Randolph County, Illinois80 acresView map Directions

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

Max depth

35 ft

Bathymetric survey

Area

80 acres

Surface area

Shoreline

4 mi

Measured length

Impaired · Mercury
35 ft max depth
Public access

See the measurements Directions Where to stay

Randolph County Lake in Randolph County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 35 ft. Surface area: 80 acres.

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Randolph County Lake is a 80-acre lake in Randolph County, Illinois with a maximum depth of 35 feet (19-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 Randolph County Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water35 ft surveyed max depth

Swimming conditions

No reading

Not rated

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

Whether Randolph County 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 Randolph County Lake

These are the measurements Illinois EPA publishes for Randolph County 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 Randolph County Lake

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

Lake Details

Max depth

35 ft

Average depth

19 ft

Surface area

80 acres

Shoreline

4 mi

Public access

Yes

Listed by Illinois EPA

Recreation & Access

Boat Landings

Yes

Public Access

Randolph County LakePublic

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

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Stays near Randolph County Lake

Compare lakeside cabins, hotels, and vacation rentals near Randolph County Lake in Randolph 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 Randolph County Lake

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Fishing Randolph County Lake

→ Randolph County Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

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

Causes of impairment

MercuryNutrients (phosphorus, nitrogen)

Designated uses not supporting: Fish consumption, Other.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit IL_RIB · Official waterbody report

Nearby Lakes in Randolph County

Randolph Lake1.7 ft clear · Hypereutrophic0.1 miView →Old City Reservoir10.5 miView →Sparta Northwest Lake2.6 ft clear · Hypereutrophic11.9 miView →New City Reservoir12.5 miView →West C Streamline Lake11.6 miView →Baldwin Lake—View →

Frequently asked questions about Randolph County Lake

Where is Randolph County Lake?: Randolph County Lake is a lake in Randolph County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Randolph County Lake?: Randolph County Lake in Randolph County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 35 ft. Surface area: 80 acres.
Is Randolph County Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Randolph County Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Randolph County Lake?: Randolph County Lake has a maximum depth of 35 feet and an average depth of 19 feet. The lake covers 80 acres.
Are there boat ramps on Randolph County Lake?: Randolph County Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Randolph County Lake. Public access is listed as yes.
Can I fish at Randolph County Lake?: Randolph County 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.