Skip to content
The Water Around Us
Sign In

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).

Clear location
  • 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.

  1. Smith River bl Eagle Cr nr Fort Logan MTUSGS gauge · Montana · 93 ft³/s
    62°F13 mi9 hrs ago
  2. Missouri River at Toston MTUSGS gauge · Montana · 1,820 ft³/s
    69°F38 mi9 hrs ago
  3. Shields River bl SF Shields River nr Wilsall, MTUSGS gauge · Montana · 14 ft³/s
    52°F44 mi9 hrs ago
  4. Missouri River bl Holter Dam nr Wolf Cr MTUSGS gauge · Montana · 3,490 ft³/s
    63°F49 mi8 hrs ago
  5. Gallatin River at Logan MTUSGS gauge · Montana · 392 ft³/s
    64°F55 mi9 hrs ago
  6. Jefferson River near Three Forks MTUSGS gauge · Montana · 444 ft³/s
    70°F57 mi9 hrs ago
  7. Dearborn River near Craig MTUSGS gauge · Montana · 37 ft³/s
    64°F60 mi9 hrs ago
  8. Sun River at Simms MTUSGS gauge · Montana · 131 ft³/s
    66°F71 mi8 hrs ago

Nearest swimmable spots

Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.

No rated, photographed swim spots within 25 miles of this point yet. The nearest sensor readings above still tell you what the water is doing — or search any river, lake or beach by name.
Search a spot →

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.