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 (8 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.
- 88°F15 mi9 hrs ago
- Vermilion Bay near Cypremort Point, LAUSGS gauge · Louisiana88°F31 mi9 hrs ago
- Vermilion River at Surrey St. at Lafayette, LAUSGS gauge · Louisiana · 784 ft³/s89°F49 mi9 hrs ago
- North Calcasieu Lake near Hackberry, LAUSGS gauge · Louisiana87°F64 mi9 hrs ago
- Calcasieu River at I-10 at Lake Charles, LAUSGS gauge · Louisiana90°F69 mi9 hrs ago
- Lower Atchafalaya River at Morgan City, LAUSGS gauge · Louisiana · 45,100 ft³/s89°F70 mi8 hrs ago
- Ouiska Chitto Creek Near Oberlin, LAUSGS gauge · Louisiana · 237 ft³/s79°F83 mi9 hrs ago
- Caillou Lake (Sister Lake) SW of Dulac, LAUSGS gauge · Louisiana89°F90 mi9 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.