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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 (2 hrs 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. DEEP C NR HESPERIA CAUSGS gauge · California · 0 ft³/s
    79°F26 mi1 day ago
  2. MOJAVE R A LO NARROWS NR VICTORVILLE CAUSGS gauge · California · 4 ft³/s
    72°F42 mi1 day ago
  3. SANTA MARGARITA R NR TEMECULA CAUSGS gauge · California · 3 ft³/s
    76°F44 mi1 day ago
  4. TECOLOTE C AB FOOTBRIDGE NR SAN DIEGO CAUSGS gauge · California · 0 ft³/s
    68°F91 mi1 day ago
  5. CRIR LWR MAIN DRAIN BLW TYSON WW, NR EHRENBERG, AZUSGS gauge · Arizona · 122 ft³/s
    70°F139 mi1 day ago
  6. COLORADO RIVER BELOW COOPER WASTEWAY NEAR YUMA, AZUSGS gauge · Arizona
    85°F157 mi1 day ago
  7. YUMA MESA OUTLET DRAIN NEAR YUMA, AZUSGS gauge · Arizona · 41 ft³/s
    88°F159 mi1 day ago
  8. COLORADO RIVER ABOVE IMPERIAL DAM, AZ-CAUSGS gauge · California
    87°F162 mi1 day ago

Nearest swimmable spots

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

Ski Beach Park4.5(1,362)

Ski Beach Park

Park · Big Bear Lake, California
Camping nearbyDog-friendly

16.25-acre park on Big Bear Lake offering sports courts, ball fields, a playground & picnic tables.

12 mi from your location

Lake Gregory Regional Park4.4(4,406)

Lake Gregory Regional Park

Park · Crestline, California
Camping nearbyDog-friendly

Park's 84 acres are dominated by Lake Gregory, which is surrounded by trails, picnics & pines.

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.