Live · updated daily from USGS
Swimmable water near you
1,324 USGS sensors are reporting a live water temperature right now, the newest reading from August 23, 2026 (7 hrs ago).
- Cold · below 60°F · 218
- Cool · 60–69°F · 484
- Comfortable · 70–86°F · 544
- Warm · above 86°F · 78
- 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.
- 78°F67 mi8 hrs ago
- Great Miami River at Hamilton OHUSGS gauge · Ohio · 10,500 ft³/s73°F83 mi8 hrs ago
- Caesar Creek near Wellman OHUSGS gauge · Ohio61°F97 mi8 hrs ago
- Paint Creek near Bainbridge OHUSGS gauge · Ohio73°F107 mi8 hrs ago
- Little Miami River near Oldtown OHUSGS gauge · Ohio · 159 ft³/s68°F117 mi8 hrs ago
- OHIO RIVER AT IRONTON, OHUSGS gauge · Ohio · 105,000 ft³/s76°F118 mi8 hrs ago
- CLEAR FORK NEAR ROBBINS, TNUSGS gauge · Tennessee · 72 ft³/s79°F126 mi8 hrs ago
- NEW RIVER AT NEW RIVER, TNUSGS gauge · Tennessee · 296 ft³/s77°F127 mi8 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.