Rock Lake
Sullivan County, New York43 acresView mapDirections
No nutrient or algae sampling on record from NY DEC for this lake.
- 33 ft max depth
Rock Lake in Sullivan County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 32.8 ft. Surface area: 43 acres.
Rock Lake is a 43-acre lake in Sullivan County, New York with a maximum depth of 33 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC. Methodology: how these readings are compared.
What Rock Lake is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
- Deep water32.8 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Rock 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.
Water quality measurements for Rock Lake
These are the measurements NY DEC publishes for Rock 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 Rock Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
32.8 ft
Surface area
43 acres
Shoreline
1.4 mi
Recreation & Access
Public campgrounds near Rock Lake
- Sylvania Tree Farm Camp Sites3.4 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Rock Lake
Compare lakeside cabins, hotels, and vacation rentals near Rock 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 Rock Lake
Prices for Oct 16–18, 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 New York’s top lakes →
Follow Rock Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Rock Lake
Nearby Lakes in Sullivan County
Frequently asked questions about Rock Lake
Where is Rock Lake?
- Rock 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 Rock Lake?
- Rock Lake in Sullivan County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 32.8 ft. Surface area: 43 acres.
Is Rock Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Rock Lake?
- Rock Lake has a maximum depth of 32.8 feet. The lake covers 43 acres.
Are there campgrounds on Rock Lake?
- Rock Lake has 1 public campground from USGS The National Map within 5 km, including Sylvania Tree Farm Camp Sites. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Rock Lake across LakeQuality
More lakes in New York
Other Lakes in New York
Where this data comes from
Measurements for Rock Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Public campgrounds from USGS The National Map Structures, within about 3 miles