Outdoors
Lakes near Islip
13 named lakes within 30 miles, nearest first, with a map and directions.
Lakes within 30 mi
13
Closest
5 mi
Guggenheim Lakes
Within 10 miles
1
Reservoirs
4
Worth the drive
Map
Map of 13 places loads as you scroll.
All lakes, nearest first
- 5miGuggenheim Lakesreservoir
- 10.9miLake Ronkonkoma
- 12.1miPatchogue Lakereservoir
- 12.4miMassapequa Lake
- 18.6miUpper Lake
- 18.9miLower Lake
- 20.5miArtist Lake
- 21.5miHempstead Lakereservoir
- 21.8miBeaver Lake
- 22.3miWest Millpondreservoir
- 25.4miLake Success
- 25.5miLake Panamoka
- 29.8miPlayland Lake
Straight-line distance from the center of Islip; driving and trail distances are longer.
Before you go
Many reservoirs are drinking-water supplies with no swimming or body contact. Look for a designated swim beach.
Green, scummy or paint-like water can be a toxic blue-green algae bloom. Keep kids and dogs out and check the county advisory.
Boat launches often need a day pass or inspection for invasive mussels, and anglers 16 and older usually need a state fishing license.
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Questions
What is the closest lake to Islip?
Guggenheim Lakes, about 5 miles from the center of Islip.
How many lakes are near Islip?
13 named lakes are within 30 miles, 1 of them within 10 miles.
Are the lakes near Islip natural?
4 of the 13 are reservoirs made by dams; the rest are mapped as natural lakes. Swimming rules differ, so check each one.
Sources: Wikidata and OpenStreetMap contributors (ODbL), checked 2026-11-08; photos from Wikimedia Commons under the licenses shown. Access, fees and conditions change; check before visiting.