Where is Williston Lake?

Williston Lake is a lake in Caroline County, Maryland. Its water-quality measurements are published by MDE and shown on this page as reported.

Williston Lake

Caroline County, Maryland51 acresView map Directions

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

Area

51 acres

Surface area

Shoreline

2.5 mi

Measured length

Impaired · Nutrients (phosphorus, nitrogen)

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Williston Lake in Caroline County, Maryland has water-quality measurements published by MDE, shown here as reported. Surface area: 51 acres.

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Williston Lake is a 51-acre lake in Caroline County, Maryland.

Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.

Swimming conditions

No reading

Not rated

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

Whether Williston Lake is safe to swim in today is a call for the Maryland Department of the Environment and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Williston Lake

These are the measurements MDE publishes for Williston 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 Williston Lake

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

Lake Details

Surface area

51 acres

Shoreline

2.5 mi

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

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Stays near Williston Lake

Compare lakeside cabins, hotels, and vacation rentals near Williston Lake in Caroline County, Maryland — 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 Williston Lake

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Fishing Williston Lake

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

EPA Impairment Status

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

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit MD-021304040488-Lake_Williston · Official waterbody report

Nearby Lakes in Caroline County

Smithville Lake6.8 miView →Chester River Country Club Lake14.9 miView →Wye Mills Community Lake14.7 miView →Transquaking River Higgins Mill Pond0.7 ft clear—View →Unicorn Mill Pond—View →Parish Pond—View →

Frequently asked questions about Williston Lake

Where is Williston Lake?: Williston Lake is a lake in Caroline County, Maryland. Its water-quality measurements are published by MDE and shown on this page as reported.
What is the water quality of Williston Lake?: Williston Lake in Caroline County, Maryland has water-quality measurements published by MDE, shown here as reported. Surface area: 51 acres.
Is Williston Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Williston Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.