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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,135 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (22 hrs ago).

Clear location
  • Cold · below 60°F · 375
  • Cool · 60–69°F · 594
  • Comfortable · 70–86°F · 938
  • Warm · above 86°F · 228
  • 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 at Columbia Falls MTUSGS gauge · Montana · 4,730 ft³/s
    60°F9.2 mi22 hrs ago
  2. S F Flathead River nr Columbia Falls MTUSGS gauge · Montana · 2,980 ft³/s
    58°F12 mi22 hrs ago
  3. N F Flathead River nr Columbia Falls MTUSGS gauge · Montana · 943 ft³/s
    60°F19 mi22 hrs ago
  4. M F Flathead River near West Glacier MTUSGS gauge · Montana · 896 ft³/s
    56°F21 mi22 hrs ago
  5. S F Flathead R ab Twin C nr Hungry Horse MTUSGS gauge · Montana · 542 ft³/s
    60°F35 mi22 hrs ago
  6. Flathead River near Polson MTUSGS gauge · Montana · 5,590 ft³/s
    71°F38 mi22 hrs ago
  7. Flathead River at Perma MTUSGS gauge · Montana · 6,040 ft³/s
    71°F62 mi23 hrs ago
  8. Clark Fork near Paradise, MTUSGS gauge · Montana
    67°F70 mi23 hrs ago

Nearest swimmable spots

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

Whitefish Lake4.7(71)

Whitefish Lake

Lake · Whitefish, Montana
Camping nearby

Forested mountain lake with a namesake state park & a lodge, plus camping, skiing, boating & hiking.

17 mi from your location

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.