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 (8 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.
- Blackrock Cr bl Split Rock Cr, nr Moran, WYUSGS gauge · Wyoming54°F29 mi9 hrs ago
- BUFFALO FORK AB LAVA CREEK, NR MORAN, WYUSGS gauge · Wyoming · 263 ft³/s58°F40 mi9 hrs ago
- Pacific Creek at Moran, WYUSGS gauge · Wyoming · 48 ft³/s58°F44 mi9 hrs ago
- SNAKE RIVER NEAR MORAN, WYUSGS gauge · Wyoming · 5,000 ft³/s64°F47 mi9 hrs ago
- SNAKE RIVER AB JACKSON LAKE AT FLAGG RANCH WYUSGS gauge · Wyoming · 255 ft³/s64°F50 mi9 hrs ago
- GROS VENTRE RIVER AT KELLY, WYUSGS gauge · Wyoming · 234 ft³/s60°F55 mi9 hrs ago
- SNAKE RIVER AT MOOSE, WYUSGS gauge · Wyoming · 5,440 ft³/s62°F58 mi9 hrs ago
- Firehole River at Old Faithful, YNPUSGS gauge · Wyoming · 43 ft³/s59°F65 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.