Live · updated daily from USGS
Swimmable water near you
2,136 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (13 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 594
- 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.
- Mississippi River at Baton Rouge, LAUSGS gauge · Louisiana · 251,000 ft³/s82°F41 mi14 hrs ago
- 79°F49 mi13 hrs ago
- Davis Pond Freshwater Diversion near Boutte, LAUSGS gauge · Louisiana · 701 ft³/s88°F66 mi14 hrs ago
- Rigolets at Hwy 90 near Slidell, LAUSGS gauge · Louisiana90°F71 mi13 hrs ago
- 89°F73 mi14 hrs ago
- PEARL RIVER AT ROCKPORT, MSUSGS gauge · Mississippi · 797 ft³/s90°F73 mi13 hrs ago
- 88°F80 mi13 hrs ago
- Caernarvon Outfall Channel at Caernarvon, LAUSGS gauge · Louisiana · 676 ft³/s88°F81 mi13 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.
