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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. ROCK RIVER AT BYRON, ILUSGS gauge · Illinois · 3,810 ft³/s
    75°F27 mi1 day ago
  2. SWAN CREEK AT LALOR ROAD NEAR FITCHBURG, WIUSGS gauge · Wisconsin · 2 ft³/s
    59°F39 mi5 hrs ago
  3. SUGAR RIVER NEAR VERONA, WIUSGS gauge · Wisconsin · 43 ft³/s
    60°F41 mi5 hrs ago
  4. FOX RIVER NEAR MCHENRY, ILUSGS gauge · Illinois
    76°F42 mi1 day ago
  5. FOX RIVER NEAR NEW MUNSTER, WIUSGS gauge · Wisconsin · 460 ft³/s
    72°F42 mi5 hrs ago
  6. BADGER MILL CREEK AT VERONA, WIUSGS gauge · Wisconsin · 6 ft³/s
    59°F43 mi5 hrs ago
  7. LAKE MONONA AT MADISON, WIUSGS gauge · Wisconsin
    74°F44 mi5 hrs ago
  8. SPRING HARBOR STORM SEWER AT MADISON, WIUSGS gauge · Wisconsin · 3 ft³/s
    71°F47 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.