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 22, 2026 (7 hrs ago).
- Cold · below 60°F · 384
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 930
- 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.
- Manatawny Creek near Spangsville, PAUSGS gauge · Pennsylvania · 27 ft³/s69°F9.5 mi7 hrs ago
- Tulpehocken Cr at Blue Marsh Damsite near ReadingUSGS gauge · Pennsylvania · 157 ft³/s71°F13 mi8 hrs ago
- Birch Run near Wagontown, PAUSGS gauge · Pennsylvania · 2 ft³/s66°F14 mi7 hrs ago
- French Creek near Phoenixville, PAUSGS gauge · Pennsylvania · 40 ft³/s69°F14 mi7 hrs ago
- West Branch Brandywine Creek at Coatesville, PAUSGS gauge · Pennsylvania · 32 ft³/s69°F17 mi8 hrs ago
- West Branch Brandywine Creek at Modena, PAUSGS gauge · Pennsylvania · 47 ft³/s69°F19 mi7 hrs ago
- 67°F20 mi8 hrs ago
- East Branch Brandywine Creek below Downingtown, PAUSGS gauge · Pennsylvania · 77 ft³/s69°F20 mi7 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.