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The Water Around Us
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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).

Clear location
  • 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.

  1. Smith River bl Eagle Cr nr Fort Logan MTUSGS gauge · Montana · 89 ft³/s
    64°F31 mi9 hrs ago
  2. Sun River at Simms MTUSGS gauge · Montana · 119 ft³/s
    67°F50 mi9 hrs ago
  3. Marias River near Loma MTUSGS gauge · Montana · 718 ft³/s
    70°F51 mi9 hrs ago
  4. Missouri River bl Holter Dam nr Wolf Cr MTUSGS gauge · Montana · 3,490 ft³/s
    66°F54 mi8 hrs ago
  5. Dearborn River near Craig MTUSGS gauge · Montana · 25 ft³/s
    64°F55 mi9 hrs ago
  6. Marias River at Highway 223 bridge near Chester,MTUSGS gauge · Montana
    63°F70 mi8 hrs ago
  7. Shields River bl SF Shields River nr Wilsall, MTUSGS gauge · Montana · 15 ft³/s
    53°F77 mi9 hrs ago
  8. Missouri River at Toston MTUSGS gauge · Montana · 1,860 ft³/s
    71°F79 mi9 hrs ago

Nearest swimmable spots

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

Giant Springs State Park4.8(2,547)

Giant Springs State Park

Spring · Great Falls, Montana

Home to one of the largest freshwater springs in North America, the Rainbow Dam & 30 miles of trail.

25 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.