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Live · updated daily from USGS

Swimmable water near you

2,135 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (19 hrs ago).

Clear location
  • Cold · below 60°F · 375
  • Cool · 60–69°F · 594
  • Comfortable · 70–86°F · 938
  • Warm · above 86°F · 228
  • You

A map of the United States with one coloured dot per USGS sensor reporting a live water temperature. The readings are listed below.

Nearest live readings

The closest USGS sensors currently reporting a water temperature, nearest first.

  1. Pequest River at Pequest NJUSGS gauge · New Jersey · 448 ft³/s
    66°F13 mi20 hrs ago
  2. Pequannock River at Oak Ridge NJUSGS gauge · New Jersey · 6 ft³/s
    59°F16 mi20 hrs ago
  3. Spruce Run Res 3075 ft NW of dam at Clinton NJUSGS gauge · New Jersey
    81°F22 mi19 hrs ago
  4. Spruce Run Reservoir at Clinton NJUSGS gauge · New Jersey
    74°F22 mi19 hrs ago
  5. Whippany River near Pine Brook NJUSGS gauge · New Jersey · 192 ft³/s
    71°F24 mi20 hrs ago
  6. Brodhead Creek near Analomink, PAUSGS gauge · Pennsylvania · 153 ft³/s
    62°F24 mi20 hrs ago
  7. Delaware River at Montague NJUSGS gauge · Pennsylvania · 3,610 ft³/s
    70°F25 mi19 hrs ago
  8. Ramapo River at Dawes Highway at Pompton NJUSGS gauge · New Jersey
    75°F26 mi19 hrs ago

Nearest swimmable spots

Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.

Lake Hopatcong4.6(319)

Lake Hopatcong

Lake · New Jersey

Bustling recreational lake for boating, water skiing & swimming, with waterfront eateries & bars.

7.7 mi from your location

Indian Lake4.8(38)

Indian Lake

Lake · Denville, New Jersey

This popular, 99-acre lake features 3 beaches with seasonal lifeguards, boating, fishing & swimming.

16 mi from your location

Speedwell Lake Park4.5(565)

Speedwell Lake Park

Park · Morristown, New Jersey
Dog-friendly

Green space with a playground & an open field, plus a waterfall & fishing lake with a walking trail.

18 mi from your location

Wallkill River National Wildlife Refuge4.7(378)

Wallkill River National Wildlife Refuge

Tourist attraction · Sussex, New Jersey

Wildlife habitat known for its diversity of birds with hunting, fishing, trails & learning programs.

21 mi from your location

Raymondskill Falls4.8(1,313)

Raymondskill Falls

Waterfall · Milford, Pennsylvania

The tallest waterfall in Pennsylvania at roughly 150 feet, Raymondskill Falls is a stunning three-tiered cascade in the Delaware Water Gap National Recreation Area near Milford. A short third-of-a-mile trail winds through a hemlock ravine to two viewing platforms — one at the top and another below the upper two tiers. A more ambitious 3.1-mile loop combines the falls with Hackers Falls and a Cliff Trail offering views of the Delaware River. Free parking with composting toilets available.

24 mi from your location

About this map

Every pin is a live reading from a USGS real-time monitoring station, captured in a daily snapshot. Colours follow the site’s cold-water-safety thresholds and describe the water at that one sensor — usually a river or stream gauge, not a swim beach — so treat them as a guide to what the water is doing nearby, not a verdict on a specific spot. Readings are provisional and can be revised by the USGS. Your location only sorts this page: the coordinates appear in the address bar (rounded to about a mile) and are not saved to an account or our database.

Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.