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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,135 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (11 hrs ago).

Clear location
  • Cold · below 60°F · 384
  • Cool · 60–69°F · 607
  • Comfortable · 70–86°F · 929
  • 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. St. Croix River at Milltown, MaineUSGS gauge · Maine
    75°F38 mi11 hrs ago
  2. West Grand Lake at Grand Lake Stream, MaineUSGS gauge · Maine
    75°F40 mi12 hrs ago
  3. Lewy Lake at Princeton, MaineUSGS gauge · Maine
    75°F41 mi11 hrs ago
  4. Meduxnekeag River at Lowery Rd. nr Houlton, MaineUSGS gauge · Maine · 17 ft³/s
    65°F107 mi12 hrs ago
  5. E. Br. Penobscot River below Grand Lake MatagamonUSGS gauge · Maine · 301 ft³/s
    70°F121 mi12 hrs ago
  6. Wild River at Gilead, MaineUSGS gauge · Maine · 23 ft³/s
    65°F172 mi11 hrs ago
  7. Allagash River near Allagash, MaineUSGS gauge · Maine · 402 ft³/s
    66°F184 mi12 hrs ago
  8. SACO RIVER AT RIVER STREET, AT BARTLETT, NHUSGS gauge · New Hampshire · 61 ft³/s
    60°F190 mi1 day 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.