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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 22, 2026 (10 hrs ago).

Clear location
  • Cold · below 60°F · 384
  • Cool · 60–69°F · 607
  • Comfortable · 70–86°F · 929
  • 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. Yellowstone River near Sidney MTUSGS gauge · Montana · 3,080 ft³/s
    73°F25 mi1 day ago
  2. MISSOURI RIVER NEAR WILLISTON, NDUSGS gauge · North Dakota
    72°F36 mi11 hrs ago
  3. Yellowstone River Fish Bypass Channel nr Intake MTUSGS gauge · Montana · 570 ft³/s
    73°F49 mi1 day ago
  4. Missouri River near Wolf Point MTUSGS gauge · Montana · 7,130 ft³/s
    65°F50 mi1 day ago
  5. Missouri R at E Frazer Pump Plant nr Frazer MTUSGS gauge · Montana
    61°F71 mi1 day ago
  6. East Poplar River at international boundaryUSGS gauge · Delaware · 2 ft³/s
    68°F83 mi1 day ago
  7. Milk River at Nashua MTUSGS gauge · Montana · 153 ft³/s
    74°F88 mi1 day ago
  8. Powder River near Locate MTUSGS gauge · Montana · 4 ft³/s
    63°F114 mi1 day 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.