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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,141 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (1 hr ago).

Clear location
  • Cold · below 60°F · 385
  • Cool · 60–69°F · 607
  • Comfortable · 70–86°F · 934
  • 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. CRIR LWR MAIN DRAIN BLW TYSON WW, NR EHRENBERG, AZUSGS gauge · Arizona · 122 ft³/s
    70°F15 mi1 day ago
  2. COLORADO RIVER ABOVE IMPERIAL DAM, AZ-CAUSGS gauge · California
    87°F44 mi1 day ago
  3. YUMA MESA OUTLET DRAIN NEAR YUMA, AZUSGS gauge · Arizona · 41 ft³/s
    88°F55 mi1 day ago
  4. COLORADO RIVER BELOW COOPER WASTEWAY NEAR YUMA, AZUSGS gauge · Arizona
    85°F57 mi1 day ago
  5. YUMA MAIN DRAIN ABOVE ARIZONA-SONORA BOUNDARYUSGS gauge · Arizona
    82°F73 mi1 day ago
  6. 242 LATERAL ABOVE MAIN DRAIN AT AZ-SONORA BOUNDRYUSGS gauge · Arizona
    80°F73 mi1 day ago
  7. SANTA MARGARITA R NR TEMECULA CAUSGS gauge · California · 3 ft³/s
    76°F149 mi1 day ago
  8. TECOLOTE C AB FOOTBRIDGE NR SAN DIEGO CAUSGS gauge · California · 0 ft³/s
    68°F161 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.