Live · updated daily from USGS
Swimmable water near you
2,139 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (4 hrs ago).
- Cold · below 60°F · 384
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 933
- Warm · above 86°F · 215
- 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.
- Pequest River at Pequest NJUSGS gauge · New Jersey · 235 ft³/s67°F12 mi5 hrs ago
- Brodhead Creek near Analomink, PAUSGS gauge · Pennsylvania · 89 ft³/s63°F15 mi5 hrs ago
- Delaware River at Montague NJUSGS gauge · Pennsylvania · 3,580 ft³/s71°F23 mi5 hrs ago
- Pequannock River at Oak Ridge NJUSGS gauge · New Jersey · 6 ft³/s59°F23 mi5 hrs ago
- 82°F24 mi5 hrs ago
- Spruce Run Reservoir at Clinton NJUSGS gauge · New Jersey72°F25 mi5 hrs ago
- Lehigh River at Glendon, PAUSGS gauge · Pennsylvania · 1,460 ft³/s72°F28 mi5 hrs ago
- Pohatcong Crk at Creek Rd nr Carpentersville NJUSGS gauge · New Jersey · 44 ft³/s67°F28 mi5 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.6(319)Lake Hopatcong
Bustling recreational lake for boating, water skiing & swimming, with waterfront eateries & bars.
16 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.
