Where is Halfmoon Lake?

Halfmoon Lake is a lake in Sullivan County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.

How deep is Halfmoon Lake?

Halfmoon Lake has a maximum depth of 15.4 feet. The lake covers 37 acres.

Halfmoon Lake

Sullivan County, New York37 acresView map Directions

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

Max depth

15.4 ft

Bathymetric survey

Area

37 acres

Surface area

Shoreline

1.6 mi

Measured length

15 ft max depth

See the measurements Directions Where to stay

Halfmoon Lake in Sullivan County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 15.4 ft. Surface area: 37 acres.

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Halfmoon Lake is a 37-acre lake in Sullivan County, New York with a maximum depth of 15 feet.

Source: EPA Water Quality Portal sampling records, NYSDEC. 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 Halfmoon Lake is safe to swim in today is a call for the New York Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Halfmoon Lake

These are the measurements NY DEC publishes for Halfmoon 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 Halfmoon Lake

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

Lake Details

Max depth

15.4 ft

Surface area

37 acres

Shoreline

1.6 mi

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Stays near Halfmoon Lake

Compare lakeside cabins, hotels, and vacation rentals near Halfmoon Lake in Sullivan County, New York — 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 Halfmoon Lake

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Fishing Halfmoon Lake

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

Nearby Lakes in Sullivan County

Fox Lake0.5 miView →Turnpike Pond1.2 miView →Welmet Lake1.7 miView →Lake Nianque2.3 miView →Swamp Pond3.9 ft clear2.1 miView →Crystal Lake2.4 miView →

Frequently asked questions about Halfmoon Lake

Where is Halfmoon Lake?: Halfmoon Lake is a lake in Sullivan County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.
What is the water quality of Halfmoon Lake?: Halfmoon Lake in Sullivan County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 15.4 ft. Surface area: 37 acres.
Is Halfmoon Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Halfmoon Lake?: Halfmoon Lake has a maximum depth of 15.4 feet. The lake covers 37 acres.