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Live · updated daily from USGS

Swimmable water near you

2,136 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (13 hrs ago).

Clear location
  • Cold · below 60°F · 375
  • Cool · 60–69°F · 594
  • 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. 68°F7.1 mi14 hrs ago
  2. NEVERSINK RIVER AT BRIDGEVILLE NYUSGS gauge · New York · 353 ft³/s
    57°F8.7 mi13 hrs ago
  3. NEVERSINK RIVER AT NEVERSINK NYUSGS gauge · New York · 150 ft³/s
    50°F13 mi14 hrs ago
  4. 74°F13 mi13 hrs ago
  5. TENMILE RIVER AT TUSTEN NYUSGS gauge · New York · 17 ft³/s
    66°F14 mi14 hrs ago
  6. MONGAUP RIVER NEAR MONGAUP NYUSGS gauge · New York · 203 ft³/s
    70°F14 mi14 hrs ago
  7. DELAWARE RIVER AT BARRYVILLE NYUSGS gauge · Pennsylvania · 2,180 ft³/s
    68°F15 mi14 hrs ago
  8. CALLICOON CREEK AT CALLICOON NYUSGS gauge · New York · 225 ft³/s
    62°F15 mi13 hrs ago

Nearest swimmable spots

Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.

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.