Live · updated daily from USGS
Swimmable water near you
2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (11 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 595
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 229
- 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.
- Susquehanna River at Danville, PAUSGS gauge · Pennsylvania · 5,580 ft³/s73°F21 mi11 hrs ago
- Swatara Creek near Palmyra, PAUSGS gauge · Pennsylvania · 232 ft³/s67°F24 mi11 hrs ago
- Little Conewago Crk, Gingrich Rd at Upper Lawn PAUSGS gauge · Pennsylvania · 2 ft³/s65°F31 mi11 hrs ago
- Tulpehocken Creek near Bernville, PAUSGS gauge · Pennsylvania · 59 ft³/s65°F33 mi12 hrs ago
- Conewago Creek near Bellaire, PAUSGS gauge · Pennsylvania · 16 ft³/s67°F33 mi11 hrs ago
- Hammer Creek at Obie Rd nr Schafferstown, PAUSGS gauge · Pennsylvania · 7 ft³/s59°F33 mi11 hrs ago
- Fishing Creek at Goldsboro, PAUSGS gauge · Pennsylvania · 13 ft³/s67°F35 mi12 hrs ago
- Conewago Creek near Falmouth, PAUSGS gauge · Pennsylvania · 26 ft³/s69°F35 mi12 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
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.