Where is Watson Lake?

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

Watson Lake

Calhoun County, Illinois354 acresView map Directions

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

Area

354 acres

Surface area

Shoreline

11.8 mi

Measured length

See the measurements Directions Where to stay

Watson Lake in Calhoun County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Surface area: 354 acres.

Loading map…

Watson Lake is a 354-acre lake in Calhoun County, Illinois.

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 Watson 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 Watson Lake →

Water quality measurements for Watson Lake

These are the measurements Illinois EPA publishes for Watson 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 Watson Lake

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

Lake Details

Surface area

354 acres

Shoreline

11.8 mi

No bathymetric survey has been published for Watson Lake, so its depth is not documented here.

Stays via Stay22

Stays near Watson Lake

Compare lakeside cabins, hotels, and vacation rentals near Watson Lake in Calhoun 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 Watson 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 Watson Lake’s readings

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

Or email

Fishing Watson Lake

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

Nearby Lakes in Calhoun County

Strator Pond4.2 miView →Middle Slough5.6 miView →Godar Swamp—View →Royal Lake—View →Silver Lake—View →Chickahominy Lake—View →

Frequently asked questions about Watson Lake

Where is Watson Lake?: Watson Lake is a lake in Calhoun County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Watson Lake?: Watson Lake in Calhoun County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Surface area: 354 acres.
Is Watson Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.