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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (12 hrs ago).

Clear location
  • Cold · below 60°F · 375
  • Cool · 60–69°F · 595
  • Comfortable · 70–86°F · 938
  • Warm · above 86°F · 229
  • 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. SUGAR CREEK NEAR CHATHAM, ILUSGS gauge · Illinois
    79°F45 mi12 hrs ago
  2. LICK CREEK NEAR WOODSIDE, ILUSGS gauge · Illinois
    74°F49 mi12 hrs ago
  3. Mississippi River Pool Lock and Dam 26 at Alton,ILUSGS gauge · Illinois
    79°F60 mi12 hrs ago
  4. NORTH FORK SALT CREEK NEAR DE WITT, ILUSGS gauge · Illinois · 152 ft³/s
    69°F76 mi12 hrs ago
  5. SALT CREEK NEAR FARMER CITY, ILUSGS gauge · Illinois
    68°F78 mi12 hrs ago
  6. ILLINOIS RIVER AT FLORENCE, ILUSGS gauge · Illinois
    78°F85 mi12 hrs ago
  7. 22N7W-28.5a (IL Tree Nursery)USGS gauge · Illinois
    57°F90 mi12 hrs ago
  8. 22N7W-29.1d4 (SH-2)USGS gauge · Illinois
    63°F90 mi12 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.