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The Water Around Us
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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 (12 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. Flathead River near Polson MTUSGS gauge · Montana · 5,590 ft³/s
    71°F31 mi12 hrs ago
  2. Blackfoot River near Bonner MTUSGS gauge · Montana · 662 ft³/s
    63°F38 mi12 hrs ago
  3. S F Flathead R ab Twin C nr Hungry Horse MTUSGS gauge · Montana · 542 ft³/s
    60°F38 mi12 hrs ago
  4. Clark Fork above Missoula MTUSGS gauge · Montana · 1,170 ft³/s
    64°F41 mi13 hrs ago
  5. NF Blackfoot R ab Dry Gulch nr Ovando MTUSGS gauge · Montana · 233 ft³/s
    51°F42 mi13 hrs ago
  6. Flathead River at Perma MTUSGS gauge · Montana · 6,040 ft³/s
    71°F43 mi12 hrs ago
  7. Bitterroot River near Missoula MTUSGS gauge · Montana · 705 ft³/s
    67°F46 mi13 hrs ago
  8. Rock Creek near Clinton MTUSGS gauge · Montana · 270 ft³/s
    60°F50 mi12 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.