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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,139 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (4 hrs ago).

Clear location
  • Cold · below 60°F · 384
  • Cool · 60–69°F · 607
  • Comfortable · 70–86°F · 933
  • 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°F30 mi1 day ago
  2. Mississippi River at Cape Girardeau, MOUSGS gauge · Missouri
    83°F57 mi1 day ago
  3. BIG MUDDY RIVER AT RTE 127 AT MURPHYSBORO, ILUSGS gauge · Illinois · 870 ft³/s
    80°F68 mi1 day ago
  4. WABASH RIVER AT NEW HARMONY, INUSGS gauge · Indiana · 61,100 ft³/s
    78°F88 mi1 day ago
  5. GREEN RIVER AT LOCK 1 AT SPOTTSVILLE, KYUSGS gauge · Kentucky
    83°F89 mi1 day ago
  6. BUFFALO RIVER NEAR FLAT WOODS, TNUSGS gauge · Tennessee · 215 ft³/s
    82°F110 mi5 hrs ago
  7. CUMBERLAND RIVER NEAR BORDEAUX, TNUSGS gauge · Tennessee
    82°F111 mi5 hrs ago
  8. HARPETH RIVER AT BELLEVUE, TNUSGS gauge · Tennessee · 196 ft³/s
    79°F111 mi5 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.