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 21, 2026 (22 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 594
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 228
- 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.
- Youghiogheny River below Confluence, PAUSGS gauge · Pennsylvania · 4,190 ft³/s63°F12 mi22 hrs ago
- 62°F13 mi22 hrs ago
- Youghiogheny River at Youghiogheny River Dam, PAUSGS gauge · Pennsylvania · 618 ft³/s62°F13 mi22 hrs ago
- Monongahela River near Masontown, PAUSGS gauge · Pennsylvania · 22,400 ft³/s71°F18 mi22 hrs ago
- YOUGHIOGHENY RIVER AT FRIENDSVILLE, MDUSGS gauge · Maryland · 549 ft³/s65°F18 mi22 hrs ago
- Casselman River at Markleton, PAUSGS gauge · Pennsylvania · 1,900 ft³/s65°F19 mi22 hrs ago
- 71°F20 mi22 hrs ago
- Dunkard Creek at Shannopin, PAUSGS gauge · Pennsylvania · 229 ft³/s71°F22 mi22 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.8(74)Ohiopyle Falls
Turbulent, 20-foot waterfall spanning the Youghiogheny River within Ohiopyle State Park.
5.1 mi from your location
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.