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).
- 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.
- CHEAT RIVER AT ALBRIGHT, WVUSGS gauge · West Virginia · 2,140 ft³/s70°F1.4 mi5 hrs ago
- YOUGHIOGHENY RIVER AT FRIENDSVILLE, MDUSGS gauge · Maryland · 549 ft³/s65°F18 mi1 day ago
- 71°F18 mi5 hrs ago
- DEEP CREEK LAKE NEAR THAYERVILLE, MDUSGS gauge · Maryland74°F20 mi1 day ago
- 72°F21 mi6 hrs ago
- TYGART VALLEY R AT TYGART DAM NR GRAFTON, WVUSGS gauge · West Virginia · 14,000 ft³/s71°F22 mi5 hrs ago
- Dunkard Creek at Shannopin, PAUSGS gauge · Pennsylvania · 206 ft³/s72°F25 mi5 hrs ago
- TYGART VALLEY RIVER AT COLFAX, WVUSGS gauge · West Virginia · 11,800 ft³/s71°F25 mi5 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.