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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,140 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (3 hrs ago).

Clear location
  • Cold · below 60°F · 384
  • 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. OHIO RIVER AT OLMSTED, ILUSGS gauge · Illinois · 330,000 ft³/s
    82°F62 mi1 day ago
  2. BUFFALO RIVER NEAR FLAT WOODS, TNUSGS gauge · Tennessee · 215 ft³/s
    82°F76 mi4 hrs ago
  3. Mississippi River at Cape Girardeau, MOUSGS gauge · Missouri
    83°F80 mi1 day ago
  4. HARPETH RIVER AT BELLEVUE, TNUSGS gauge · Tennessee · 196 ft³/s
    79°F102 mi4 hrs ago
  5. BIG MUDDY RIVER AT RTE 127 AT MURPHYSBORO, ILUSGS gauge · Illinois · 870 ft³/s
    80°F104 mi1 day ago
  6. HARPETH RIVER AT MILE 81.33 NR BERRYS CHAPEL, TNUSGS gauge · Tennessee
    77°F105 mi4 hrs ago
  7. CUMBERLAND RIVER NEAR BORDEAUX, TNUSGS gauge · Tennessee
    82°F106 mi4 hrs ago
  8. HARPETH RIVER AT MILE 90.5 NEAR FRANKLIN, TNUSGS gauge · Tennessee · 44 ft³/s
    77°F109 mi4 hrs 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.