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The Water Around Us
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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 22, 2026 (6 hrs ago).

Clear location
  • Cold · below 60°F · 384
  • Cool · 60–69°F · 607
  • Comfortable · 70–86°F · 930
  • Warm · above 86°F · 215
  • 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. Lamar River nr Tower Ranger Station YNPUSGS gauge · Wyoming · 199 ft³/s
    66°F45 mi6 hrs ago
  2. Blackrock Cr bl Split Rock Cr, nr Moran, WYUSGS gauge · Wyoming
    58°F50 mi6 hrs ago
  3. Tantalus Creek at Norris Junction, YNPUSGS gauge · Wyoming · 2 ft³/s
    80°F51 mi6 hrs ago
  4. SNAKE RIVER AB JACKSON LAKE AT FLAGG RANCH WYUSGS gauge · Wyoming · 241 ft³/s
    66°F51 mi6 hrs ago
  5. Firehole River at Old Faithful, YNPUSGS gauge · Wyoming · 37 ft³/s
    61°F52 mi7 hrs ago
  6. BUFFALO FORK AB LAVA CREEK, NR MORAN, WYUSGS gauge · Wyoming · 256 ft³/s
    61°F55 mi6 hrs ago
  7. W Rosebud Cr at Emerald Lk Campground nr RoscoeUSGS gauge · Montana · 197 ft³/s
    57°F55 mi1 day ago
  8. Firehole River near West Yellowstone MTUSGS gauge · Wyoming · 192 ft³/s
    74°F55 mi7 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.